Support device and tunneling system

Abstract

The present invention relates to a support device and a tunneling system. The support device includes a plurality of support units. The support units include a contraction state and an expansion state. The plurality of support units are divided into a first group and a second group. The support units of the first group are in an expansion state, and the support units of the second group are in a contraction state. The support unit includes a support frame, a rotating bracket and a support assembly. The rotating bracket is rotatably connected to the support frame; and the support assembly is rotatably connected to the support frame. The rotating bracket in the first group is located in a load-bearing position, and the rotating bracket is supported by the support assembly in the second group that is in a support position. The rotating bracket is movably connected to the support assembly in the second group, so that the second group can be transported forward through the first group. The rotating bracket in the first group that is located behind the second group can be rotated from a stowed position to a load-bearing position, and the rotating bracket in the first group that is located in front of the second group can be rotated from a load-bearing position to a stowed position, so that the rear rotating bracket replaces the front rotating bracket to support the second group.

Description

Technical Field

[0001] The present invention generally relates to the field of mining technology, and in particular to a support device and a tunneling system. Background Art

[0002] With the development of mining technology, higher requirements have been put forward for effective support of tunnel roof. However, the methods of moving the support unit forward proposed in the related art have the problems of low efficiency and high labor intensity for workers, which cannot meet the production needs. Summary of the invention

[0003] The embodiments of the present invention provide a supporting device and a tunneling system with high supporting efficiency.

[0004] The support device of the embodiment of the present invention comprises a plurality of support units, each of which comprises a contracted state and an expanded state; the plurality of support units are divided into two groups, namely a first group and a second group, the plurality of support units in the first group are arranged side by side, and each of the support units is in an expanded state, and each of the support units in the second group is in a contracted state; each of the support units comprises a support frame, a rotating bracket and a support assembly, the rotating bracket is rotatably connected to the support frame, and the rotating bracket can rotate between a load-bearing position and a stowed position; the support assembly is rotatably connected to the support frame, and the support assembly can rotate between a support position and an original position;

[0005] wherein at least two rotating brackets in the first group are located at a carrying position, and the remaining rotating brackets are located at a stowed position, and the at least two rotating brackets are supported by a supporting assembly in the second group that is in a supporting position, and the at least two rotating brackets are movably connected to the supporting assembly in the second group, so that the second group can be transported forward through the first group;

[0006] Among them, the rotating bracket in the first group located behind the second group can be rotated from a stowed position to a load-bearing position, and the rotating bracket in the first group located in front of the second group can be rotated from a load-bearing position to a stowed position, so that the rear rotating bracket replaces the front rotating bracket to support the second group.

[0007] According to some embodiments of the present invention, the support device further comprises a track, the rotating bracket is supported on the track, and the track is supported on the support assembly;

[0008] The track is movably connected to the rotating bracket and the support assembly.

[0009] According to some embodiments of the present invention, the track includes a guide rail and a wheel frame, the wheel frame is suspended from the guide rail and movably connected to the guide rail;

[0010] The guide rail is configured to carry the support assembly, and the support assembly is movable relative to the guide rail; the rotating bracket is supported by the wheel frame.

[0011] According to some embodiments of the present invention, the guide rail includes a guide space having a strip-shaped opening; the wheel frame includes a mounting frame, a first wheel set and a second wheel set; the mounting frame is arranged in the strip-shaped opening and can move along the strip-shaped opening; one end of the mounting frame located inside the guide space is rotatably connected to the first wheel set, and the other end of the mounting frame located outside the guide space is rotatably connected to the second wheel set; the first wheel set is movably accommodated in the guide space;

[0012] The rotating bracket includes a frame body, a cover body and a stopper, one end of the frame body is rotatably connected to the support frame, the other end of the frame body is provided with a receiving groove toward the position of the wheel frame, the receiving groove extends along the width direction of the lane, the second wheel set is movably received in the receiving groove, and the receiving groove has an opening;

[0013] The cover body is rotatably connected to the frame body, and the cover body includes a closed state and an open state relative to the frame body; in the closed state, the cover body covers a portion of the receiving groove, and the second wheel set is confined in the receiving groove; in the open state, the cover body does not cover the receiving groove, and the wheel frame can enter and exit the receiving groove through the opening;

[0014] One end of the stopper is hinged to the frame, and includes an open state and a closed state relative to the frame; when the stopper is in the open state, the cover can be rotated from the closed state to the open state, and when the stopper is in the closed state, the other end of the stopper is inserted into a groove of the frame to stop the cover from rotating.

[0015] According to some embodiments of the present invention, the rotating bracket further comprises a lifting assembly, a magnetic member and a locking assembly;

[0016] The lifting assembly is arranged on the support frame and connected to the frame body, and is used to lift the frame body in a vertical direction; the magnetic member is arranged on the frame body, and is configured to be magnetically adsorbed to the support frame when the rotating bracket is in the retracted position, so as to confine the rotating bracket in the retracted position; the locking assembly is configured to lock the rotating bracket when the rotating bracket is in the load-bearing position.

[0017] According to some embodiments of the present invention, the support assembly comprises:

[0018] A fixing seat, fixedly connected to the supporting frame;

[0019] A rotating frame, the rotating frame is rotatably connected to the fixed seat;

[0020] A wheel set is movably connected to the rotating frame, the wheel set is configured to be supported by the guide rail, and the wheel set is movably connected to the guide rail.

[0021] According to some embodiments of the present invention, the rotating frame has a guide space, and when the support assembly is located at the support position, the guide space extends along the width direction of the lane; the guide space has a strip opening, and the strip opening extends along the guide space;

[0022] The wheel group includes a first roller group, a penetration portion, a mounting portion and a second roller group; the first roller group is rotatably connected to one end of the penetration portion, the penetration portion is passed through the strip opening and can move along the strip opening; the mounting portion is connected to the other end of the penetration portion, the second roller group is rotatably connected to the mounting portion, and the second roller group is movably connected to the guide rail.

[0023] According to some embodiments of the present invention, the support assembly further comprises a hook for limiting the support assembly in a support position; one end of the rotating frame connected to the fixed seat comprises a push surface and a stop surface;

[0024] The hook is rotatably connected to the fixing seat and can rotate between a clamping position and a loosening position;

[0025] The hook comprises a connecting portion, an operating portion and a hook portion, wherein the connecting portion is rotatably connected to the rotating frame, and the operating portion is connected to the connecting portion and is configured for a user to operate the hook to rotate through the operating portion;

[0026] The hook portion is connected to the connecting portion, and when the hook is in the clamping position, one side of the hook portion can cooperate with the stop surface to fix the supporting assembly in the supporting position; the other side of the hook portion can cooperate with the pushing surface, and when the rotating frame moves from the original position to the supporting position, the pushing surface can push the other side of the hook portion, so that the hook rotates from the clamping position to the releasing position until the hook returns to the clamping position.

[0027] According to some embodiments of the invention, the track further comprises a first capstan and a second capstan;

[0028] The first capstan is disposed at one end of the guide rail and is configured to drive the second group to move forward relative to the guide rail;

[0029] The second winch is disposed at the other end of the guide rail and is configured to drive the rail to move forward relative to the first group.

[0030] According to some embodiments of the present invention, the support device further comprises a connecting mechanism for connecting two adjacently arranged support units;

[0031] The connecting mechanism comprises a connecting member, a first rotating member, a second rotating member, a locking member and a fixing block, one end of the connecting member is movably connected to one of two adjacent supporting units, and the fixing block is connected to the other supporting unit;

[0032] One end of the first rotating member is hinged to the other end of the connecting member, and one end of the second rotating member is hinged to the other end of the connecting member, and the first rotating member and the second rotating member can rotate relative to each other around the hinge point;

[0033] The locking member can lock the first rotating member and the second rotating member, so that the fixing block is sandwiched between the first rotating member and the second rotating member.

[0034] The tunneling system of an embodiment of the present invention comprises the support device, tunneling machine, anchor drill rig and conveyor as described in any one of the above items, wherein the support device is used for temporarily supporting the tunnel; the tunneling machine is used for cutting and tunneling the tunnel; the anchor drill rig is arranged at the rear of the tunneling machine and is configured to anchor the roof and side walls of the tunnel and to transfer and transport the materials cut by the tunneling machine; the conveyor is used to transport the materials cut by the tunneling machine to the rear of the tunnel.

[0035] One embodiment of the above invention has the following advantages or beneficial effects:

[0036] The support device of the embodiment of the present invention adopts a cyclic progressive method to transmit the support unit in a contracted state forward to actively support the tunnel roof, which significantly improves the support efficiency and greatly reduces the labor intensity of workers.

[0037] In addition, when the second group of support units are transported forward, the second group of support units can be temporarily stored in the middle of the coverage area of ​​the first group of support units to become prefabricated support units. After the support units in front are converted to the expanded state, the prefabricated support units are transported forward. At the same time, the operator can disassemble the support units located behind the first group to continue to transport them forward. Through such a design, the transport of the support units and the disassembly of the rear support units can be carried out in parallel, further improving the support efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0039] Figure 1Shown is a three-dimensional view of a supporting device according to an embodiment of the present invention.

[0040] Figure 2 Shown is a front view of a supporting device according to an embodiment of the present invention.

[0041] Figure 3 Shown is a side view of a supporting device according to an embodiment of the present invention.

[0042] Figure 4 Shown is a stereoscopic view of a supporting unit according to an embodiment of the present invention.

[0043] Figure 5 Shown is a side view of a supporting unit according to an embodiment of the present invention.

[0044] Figure 6 Shown is a three-dimensional view of a rotating bracket according to an embodiment of the present invention.

[0045] Figure 7 Shown is a side view of a rotating bracket according to an embodiment of the present invention.

[0046] Figure 8 Shown is a perspective view of a support assembly according to an embodiment of the present invention.

[0047] Fig. 9 Shown is a side view of a support assembly according to an embodiment of the present invention.

[0048] Fig.10 Shown is a top view of a support assembly according to an embodiment of the present invention.

[0049] Fig.11 Shown is a schematic structural diagram of the hook and the rotating frame in the embodiment of the present invention when they are matched.

[0050] Fig.12 Shown is a three-dimensional view of a connection mechanism according to an embodiment of the present invention.

[0051] Fig.13 Shown is a top view of a connecting mechanism according to an embodiment of the present invention.

[0052] Fig.14 Shown is a side view of a connecting mechanism according to an embodiment of the present invention.

[0053] Fig.15 It is shown that Fig.14 Enlarged view of J in the middle.

[0054] Fig.16 Shown is a perspective view of a track according to an embodiment of the present invention.

[0055] Fig.17 Shown is a front view of a track according to an embodiment of the present invention.

[0056] Fig.18 Shown is a side view of a track according to an embodiment of the present invention.

[0057] Fig.19 It is shown that Fig.18 Enlarged view of K in the middle.

[0058] Fig. 20 Shown is a schematic structural diagram of a tunneling system according to an embodiment of the present invention.

[0059] The reference numerals are described as follows:

[0060] 1. Support frame;

[0061] 11. middle beam; 12. angle beam; 13. vertical beam; 14. first driving mechanism; 15. second driving mechanism; 16. guide rod; 171. first mounting seat; 172. second mounting seat; 18. mounting column; 19. telescopic beam;

[0062] 2. Rotate the bracket;

[0063] 21. frame; 211. receiving groove; 212. opening; 213. groove; 22. cover; 23. stopper; 24. lifting assembly; 25. magnetic member; 26. locking assembly; 261. locking hook; 262. locking ring;

[0064] 3. Support components;

[0065] 31. fixed seat; 32. rotating frame; 321. guide space; 322. strip opening; 323. stop surface; 324. push surface; 33. wheel group; 331. first roller group; 332. penetration portion; 333. mounting portion; 333a. connecting plate; 333b. side plate; 334. second roller group; 34. hook; 341. connecting portion; 342. operating portion; 343. hook portion; 343a. one side; 343b. the other side; 35. stopper;

[0066] 4. Connecting mechanism;

[0067] 41. Connecting member; 411. Sleeve portion; 412. Rod portion; 413. Hinge portion; 42. First rotating member; 43. Second rotating member; 44. Locking member; 45. Fixing block; 451. Through hole;

[0068] 5. Track;

[0069] 51. Guide rail; 511. I-beam; 5111. Middle beam; 5112. First side beam; 5113. Second side beam; 512. First angle steel; 5121. Side plate; 5122. Another side plate; 513. Second angle steel; 5131. Side plate; 5132. Another side plate; 52. Wheel frame; 521. First roller; 522. Second roller; 523. Mounting frame; 5231. First plate; 5232. Second plate; 5233. Third plate; 53. First capstan; 54. Second capstan; 55. Stopper; 56. Reinforcement assembly; 57. Guide space; 58. Strip opening;

[0070] 100, support device; 200, tunnel boring machine; 300, anchor drilling rig; 400, conveyor;

[0071] A. The first group; B. The second group. DETAILED DESCRIPTION

[0072] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0073] like Figure 1 and Figure 2 As shown, Figure 1 Shown is a three-dimensional view of a supporting device according to an embodiment of the present invention. Figure 2 Shown is a front view of a support device according to an embodiment of the present invention. The support device according to the embodiment of the present invention includes a plurality of support units and a track 5. Each support unit includes a contracted state and an expanded state, and each support unit can be switched between the contracted state and the expanded state. The support unit in the contracted state has a smaller area than the support unit in the expanded state. The support unit in the expanded state can support a tunnel, such as a roof of the tunnel. The support unit in the contracted state can be transferred from the support unit in the expanded state.

[0074] The plurality of support units are divided into two groups, namely, support units of a first group A and support units of a second group B. The support units of the first group A are in an expanded state, and the support units of the second group B are in a contracted state. Figure 1 and Figure 2 As shown, the support units of the first group A include 14 support units in an expanded state, and the support units of the second group B include 2 support units in a contracted state.

[0075] like Figure 1 and Figure 2As shown in FIG. 1 , when the second group B support unit in the front is converted from the contracted state to the expanded state, the two support units A13 and A14 in the rear of the first group A support unit can be converted from the expanded state to the contracted state synchronously. After the two support units A13 and A14 are converted to the contracted state, they can be transported forward through the track 5, for example, to the middle position of the area covered by the first group A support unit. When the second group B support unit in the front is completely converted to the expanded state, the two support units A13 and A14 are again transported to the middle position of the area covered by the first group A support unit. Figure 2 The position shown is repeated in this way to achieve cyclic support.

[0076] like Figures 3 to 5 As shown, Figure 3 Shown is a side view of a supporting device according to an embodiment of the present invention. Figure 4 Shown is a stereoscopic view of a supporting unit according to an embodiment of the present invention. Figure 5 The figure shows a side view of a support unit according to an embodiment of the present invention. Each support unit according to the embodiment of the present invention comprises a support frame 1, a rotating bracket 2 and a support assembly 3. The support frame 1 can be retracted or expanded to achieve the retraction or expansion of the support unit. How the support frame 1 is retracted or expanded will be described in detail later.

[0077] The rotating bracket 2 is rotatably connected to the support frame 1. In this embodiment, each support unit includes two rotating brackets 2, which are arranged opposite to each other and are rotatably connected to the two vertical beams 13 of the support frame 1 respectively. The rotating bracket 2 can rotate between a load-bearing position and a stowed position. In the load-bearing position, the rotating bracket 2 can carry the track 5, and the track 5 is movably connected to the rotating bracket 2. In this embodiment, the two rotating brackets 2 in the load-bearing position are arranged opposite to each other and both extend into the support frame 1.

[0078] The support assembly 3 is rotatably connected to the support frame 1. In this embodiment, each support unit includes four support assemblies 3, and the four support assemblies 3 are divided into two pairs, and the two pairs of support assemblies 3 are respectively arranged on two vertical beams 13 of the support frame 1. Each support assembly 3 can rotate between a support position and an original position. In the support position, the track 5 can carry the support assembly 3, so that the support unit of the second group B can be lifted by the rotating bracket 2. The support assembly 3 is movably connected to the track 5.

[0079] In which, during the process of the support unit of the second group B moving forward relative to the track 5, the rotating bracket 2 in the support unit of the first group A located behind the support unit of the second group B can be rotated from the stowed position to the load-bearing position, and the rotating bracket 2 located in front of the support unit of the second group B can be rotated from the load-bearing position to the stowed position, so that the rotating bracket 2 at the rear replaces the rotating bracket 2 at the front.

[0080] Combine the following Figure 2 The working process of the support device of the embodiment of the present invention is described in detail. For example, the support units of the first group A include 14 support units, namely A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, and A14. Among them, the rotating brackets 2 of A3 and A10 are in the load-bearing position, carrying the track 5, and the rotating brackets 2 of the remaining support units in the first group A are all in the retracted position. The positions of the rotating brackets 2 of the support units A3 and A10 can be as follows: Figure 3 As shown, the rotating bracket 2 of the remaining support units can be Figure 4 shown.

[0081] The supporting units of the second group B to be transported should first be removed from the tail of the supporting units of the first group A (converted from the expanded state to the contracted state). The supporting assembly 3 of each supporting unit of the second group B is located in the supporting position, and the supporting assembly 3 is carried by the track 5, and the track 5 is carried by the rotating bracket 2 of the supporting units A3 and A10 mentioned above.

[0082] Among the support units of the first group A, except for the rotating brackets 2 of the support units A3 and A10 which are in the load-bearing position, the rest are in the stowed position, so the rotating brackets 2 of the remaining support units will not interfere with the movement of the support units of the second group B being transported forward. Therefore, during the process of the support units of the second group B being transported forward, they will pass through A14, A13, A12 and A11 in sequence. When the support units of the second group B are transported to A10, since the rotating bracket 2 of A10 is in the load-bearing position, Figure 3 As shown, the rotating bracket 2 will block the second group B support unit from continuing to be transmitted forward. At this time, for example, the rotating bracket 2 of A12 can be rotated to the load-bearing position to carry the track 5, so that the track 5 always has more than or equal to two support points. After the rotating bracket 2 of A12 is carried on the track 5, since the track 5 has three support points (A3, A10 and A12) at this time, the rotating bracket 2 of A10 can be rotated to the retracted position to prevent it from blocking the second group B support unit. Then the second group B support unit can continue to be transmitted forward and pass through A10, A9, A8, A7, A6, A5 and A4 in sequence. When the second group B support unit is blocked when being transmitted to A3, the same method as above can be used, for example, the rotating bracket of A3 is replaced with the rotating bracket of A6, so that the second group B support unit can pass through A3, A2 and A1 in sequence, and finally be transmitted to the front of the first group A support unit. Finally, the track 5 and the second group B support units are transported forward as a whole, so that the second group B support units extend out of the range covered by the first group A support units, thereby completing the action of the second group B support units supporting the tunnel roof.

[0083] Of course, it can be understood that the above-mentioned replacement of the rotating bracket 2 of A10 with the rotating bracket 2 of A12 and the replacement of the rotating bracket 2 of A3 with the rotating bracket 2 of A6 are only explained as examples. In actual operation, the operator can make adaptive adjustments based on factors such as the stress conditions of the rotating bracket 2 bearing the rail 5 and / or the number of the second group B support units.

[0084] The support device of the embodiment of the present invention adopts a cyclic progressive method to transmit the support unit in a contracted state forward to actively support the tunnel roof, which significantly improves the support efficiency and greatly reduces the labor intensity of workers.

[0085] In addition, when the second group of support units are transported forward, the second group of support units can be temporarily stored in the middle of the coverage area of ​​the first group of support units to become prefabricated support units. After the support units in front are converted to the expanded state, the prefabricated support units are transported forward. At the same time, the operator can disassemble the support units located behind the first group to continue to transport them forward. Through such a design, the transport of the support units and the disassembly of the rear support units can be carried out in parallel, further improving the support efficiency.

[0086] In one embodiment, the support frame 1 of the embodiment of the present invention includes two vertically arranged vertical beams 13, two corner beams 12, two telescopic beams 19 and a middle beam 11, the two ends of the middle beam 11 are respectively hinged to one end of the two telescopic beams 19, the other ends of the two telescopic beams 19 are respectively telescopically connected to one end of the two corner beams 12, and the two vertical beams 13 are respectively connected to the other ends of the two corner beams 12. The support frame 1 also includes two first driving mechanisms 14 and two second driving mechanisms 15, the two first driving mechanisms 14 are configured to respectively drive the two corner beams 12 to extend and retract relative to the two telescopic beams 19, and the two second driving mechanisms 15 are configured to respectively drive the two vertical beams 13 to move, so that the support frame 1 switches between a contracted state and an expanded state.

[0087] Specifically, the two first driving mechanisms 14 can respectively drive the two corner beams 12 to extend or retract relative to the two telescopic beams 19, so that the support frame 1 can be retracted or expanded along the width direction. The two second driving mechanisms 15 respectively drive the two vertical beams 13 to be retracted or expanded along the height direction relative to the two corner beams 12. Combining the first driving mechanism 14 and the second driving mechanism 15, the support frame 1 can be expanded or retracted as a whole.

[0088] In one embodiment, the first driving mechanism 14 and the second driving mechanism 15 are both hydraulic rods, one end of the first driving mechanism 14 is hinged to the angle beam 12, and the other end is hinged to the telescopic beam 19, and one end of the second driving mechanism 15 is connected to the angle beam 12, and the other end is connected to the vertical beam 13. Of course, it can be understood that the first and second driving mechanisms 15 can also adopt cylinder rods or other suitable driving mechanisms.

[0089] When the first driving mechanism 14 drives the telescopic beam 19 to telescope relative to the corner beam 12, since the telescopic beam 19 is hinged to the middle beam 11, the telescopic beam 19 can rotate relative to the middle beam 11 around the hinge point. When the support frame 1 is opened, the middle beam 11, the two telescopic beams 19 and the two corner beams 12 form an arch, that is, the middle beam 11 is slightly higher than the two telescopic beams 19, so as to better support the tunnel roof. Compared with the support frame in the related art, the support frame of the embodiment of the present invention can achieve pressure relief when subjected to the pressure of the roof to prevent the roof from bending the frame.

[0090] It is understandable that the present invention does not limit the specific structure of the support frame 1 to achieve contraction or expansion, and the center beam 11, angle beam 12, telescopic beam 19 and vertical beam 13 introduced above are only used as examples for description, but are not limited to this.

[0091] Combine the following Figure 6 and Figure 7 The structure and working principle of the rotating bracket 2 according to the embodiment of the present invention are described in detail. Figure 6 Shown is a three-dimensional view of a rotating bracket 2 according to an embodiment of the present invention. Figure 7 The figure shows a side view of the rotating bracket 2 according to the embodiment of the present invention. When the rotating bracket 2 according to the embodiment of the present invention is in the carrying position, it is configured to carry the track 5 and form a moving pair with the track 5. The track 5 can move forward relative to the rotating bracket 2.

[0092] The rotating bracket 2 of the embodiment of the present invention includes a frame body 21, one end of which is rotatably connected to the support frame 1. A receiving groove 211 is provided at the other end of the frame body 21 facing the track 5, and the receiving groove 211 is used to receive the wheel frame 52 of the track 5, and part of the wheel frame 52 is movably received in the receiving groove 211. The frame body 21 can be perpendicular to the vertical beam 13 of the support frame 1, and can rotate between a load-bearing position and a stowed position relative to the support frame 1.

[0093] The receiving groove 211 has an opening 212, and the wheel frame 52 can enter and exit the receiving groove 211 through the opening 212. The rotating bracket 2 also includes a cover body 22, which is rotatably connected to the frame body 21, and the cover body 22 includes a closed state and an open state relative to the frame body 21. In the closed state, the cover body 22 covers a portion of the receiving groove 211, so that the wheel frame 52 is confined in the receiving groove 211. In the open state, the cover body 22 does not cover the receiving groove 211, and the wheel frame 52 can enter and exit the receiving groove 211 through the opening 212.

[0094] The rotating bracket 2 further includes a stopper 23, which is configured to selectively stop the cover 22 from rotating. One end of the stopper 23 is hinged to the frame 21, and has an open state and a closed state relative to the frame 21; when the stopper 23 is in the open state, the cover 22 can rotate from the closed state to the open state, and when the stopper 23 is in the closed state, the other end of the stopper 23 is inserted into a groove 213 of the frame 21 to stop the cover 22 from rotating.

[0095] In one embodiment, the wheel frame 52 of the track 5 includes a first roller 521 and a second roller 522, and the first roller 521 is movably connected to the guide rail 51 of the track 5. The second roller 522 is limited by the cover 22 in the receiving groove 211, and the second roller 522 is movably received in the receiving groove 211. The moving direction of the second roller 522 in the receiving groove 211 is along the width direction of the lane. By arranging the second roller to be movably received in the receiving groove 211 along the width direction of the lane, when the second group B support unit is transmitted forward, the second group B support unit can be moved relative to the first group A support unit along the width direction of the lane, so that the support device of this embodiment can adapt to lanes in different situations. For example, when a protrusion appears on the side wall of the tunnel or the tunnel is arranged non-linearly, resulting in multiple first-group A support units arranged side by side being not aligned along the tunnel direction but staggered from each other, during the forward transmission of the second-group B support units, the wheel frame 52 can slide relative to the frame body 21 in the width direction, thereby ensuring that the second-group B support units can continue to be transmitted forward without getting stuck.

[0096] Combine the following Figure 2 How to replace the front rotating bracket 2 with the rear rotating bracket 2 is described in detail. As mentioned above, when the rotating bracket 2 of A10 is replaced with the rotating bracket 2 of A12, the stopper 23 and the cover 22 of the rotating bracket 2 of A12 are both in an open state, so that a wheel frame 52 on the track 5 can enter the receiving groove 211 through the opening 212. After the wheel frame 52 enters the receiving groove 211, the cover 22 and the stopper 23 are closed in sequence, so that the wheel frame 52 is confined in the receiving groove 211, thereby realizing that the rotating bracket 2 of A12 carries the track 5.

[0097] Afterwards, the wheel frame 52 in the rotating bracket 2 of the supporting unit A10 is removed from the accommodating groove 211, and the rotating bracket 2 of A10 is rotated to the retracted position. At this point, the rotating bracket 2 of A12 replaces the rotating bracket 2 of A10.

[0098] The rotating bracket 2 of the embodiment of the present invention further includes a lifting assembly 24, which is connected to the frame 21 and is used to lift the frame 21. In the actual mining environment, the tunnel may have a slope, and the multiple support units arranged side by side in the first group A support units are not necessarily Figure 2 The height of each rotating bracket 2 can be adjusted according to the slope of the lane, so that the frame 21 can carry the wheel frame 52 of the track 5.

[0099] In this embodiment, the lifting component 24 may be a jack. Of course, in other embodiments, the lifting component 24 may also be other components with lifting functions, which are not listed here one by one.

[0100] The rotating bracket 2 of the embodiment of the present invention further includes a magnetic member 25, which is disposed on the frame body 21 and is configured to be magnetically adsorbed on the support frame 1 when the rotating bracket 2 is in the retracted position, so as to limit the rotating bracket 2 in the retracted position. Through the design of the magnetic member 25, the rotating bracket 2 can be limited in the retracted position to prevent the rotating bracket 2 without the rail 5 from accidentally rotating, thereby affecting the transmission of the second group B support unit. In one embodiment, the magnetic member 25 can be a permanent magnet.

[0101] The rotating bracket 2 of the embodiment of the present invention further includes a locking assembly 26, which is configured to lock the rotating bracket 2 when the rotating bracket 2 is in the carrying position. Figure 4 As shown, in this embodiment, the locking assembly 26 includes a locking hook 261 and a locking ring 262, the locking hook 261 is movably connected to the vertical beam of the support frame 1 along the vertical direction, and the locking ring 262 is provided on the frame 21. When the frame 21 rotates to the load-bearing position, the locking hook 261 can be inserted into the locking ring 262 to lock the frame 21.

[0102] Of course, it is understandable that the locking assembly 26 of the embodiment of the present invention may also be made of other components with locking functions, which are not listed here one by one.

[0103] Combine the following Figures 8 to 11 , the structure and working principle of the support assembly 3 of the embodiment of the present invention are described in detail. Figure 8 Shown is a three-dimensional view of a support assembly 3 according to an embodiment of the present invention. Fig. 9 Shown is a side view of a support assembly 3 according to an embodiment of the present invention. Fig.10Shown is a top view of the support assembly 3 according to the embodiment of the present invention. Fig.11 Shown is a schematic structural diagram of the hook and the rotating frame in the embodiment of the present invention when they are matched.

[0104] The support assembly 3 of the embodiment of the present invention is rotatably connected to the support frame 1 of the support unit, and the support assembly 3 can rotate between the support position and the original position. When the second group B support unit is transported, the support assembly 3 is located at the support position and is configured to be supported by the track 5, and the support assembly 3 is movably connected to the track 5, so that the second group B support unit can be transported forward relative to the first group A support unit.

[0105] The support assembly 3 of the embodiment of the present invention includes a fixed seat 31, a rotating frame 32 and a wheel group 33. The fixed seat 31 is fixedly connected to the support frame 1, the rotating frame 32 is rotatably connected to the fixed seat 31, the wheel group 33 is movably connected to the rotating frame 32, and the wheel group 33 is configured to be supported by the track 5.

[0106] The rotating frame 32 has a guide space 321. When the supporting assembly 3 is located at the supporting position, the guide space 321 extends along the width direction of the lane. The guide space 321 has a strip opening 322. The strip opening 322 extends along the guide space 321. Part of the wheel set 33 is movably accommodated in the guide space 321 through the strip opening 322.

[0107] By configuring the wheel set 33 to be able to move along the guide space 321, and the guide space 321 extending along the width direction of the lane, when the support unit is conveyed forward, the second group B support unit can be moved relative to the first group A support unit along the width direction of the lane, so that the support device of this embodiment can adapt to lanes in different situations. For example, when a bulge appears on the side wall of the lane or the lane is arranged non-linearly, resulting in multiple first group A support units arranged side by side not being aligned along the lane direction but staggered, the wheel set 33 can slide relative to the rotating frame 32, thereby ensuring that the second group B support unit can continue to be conveyed forward without getting stuck.

[0108] The wheel set 33 includes a first roller set 331, a through portion 332, a mounting portion 333 and a second roller set 334. The first roller set 331 is rotatably connected to one end of the through portion 332 and is movably accommodated in the guide space 321. The through portion 332 is disposed in the strip opening 322 and can move along the strip opening 322.

[0109] The mounting portion 333 is connected to the other end of the through portion 332 and is located outside the guide space 321. The second roller group 334 is rotatably connected to the mounting portion 333, and the second roller group 334 is movably connected to a track 5, and the second group B of supporting units is supported on the track 5.

[0110] The mounting portion 333 includes a connecting plate 333a and two oppositely arranged side plates 333b, the connecting plate 333a is connected to the through-portion 332, the two side plates 333b are connected to the side of the connecting plate 333a away from the through-portion 332, the second roller set 334 is disposed between the two side plates 333b and is rotatably connected to the two side plates 333b, and the track 5 is movably disposed between the two side plates 333b.

[0111] The axis of the first roller group 331 is perpendicular to the axis of the second roller group 334, so that the wheel group can move along the width direction of the lane relative to the rotating frame 32 through the first roller group 331, and the support unit can move along the front and rear direction of the lane relative to another support unit.

[0112] The support assembly 3 of the embodiment of the present invention further includes a stopper 35 , which is disposed at one end of the guide space 321 and is used to stop the wheel assembly from detaching from the guide space 321 .

[0113] The support assembly 3 of the embodiment of the present invention further includes a locking structure for locking the support assembly 3 in the supporting position.

[0114] One end of the rotating frame 32 connected to the fixed seat 31 has a push surface 324 and a stop surface 323. In one embodiment, the locking structure includes a hook 34, which is rotatably connected to the fixed seat 31 and can rotate between a clamping position and a loose position. The hook 34 includes a connecting portion 341, an operating portion 342 and a hook portion 343. The connecting portion 341 is rotatably connected to the rotating frame 32, and the operating portion 342 is connected to the connecting portion 341, and is configured for the user to operate the hook 34 to rotate through the operating portion 342.

[0115] The hook portion 343 is connected to the connecting portion 341. When the hook 34 is in the clamping position, one side 343a of the hook 343 can cooperate with the stop surface 323 to fix the support assembly 3 in the support position. The other side 343b of the hook 343 can cooperate with the push surface 324. When the rotating frame 32 moves from the original position to the support position, the push surface 324 can push the other side of the hook 343, so that the hook 34 is pushed by the rotating frame 32 and rotates from the clamping position to the release position. When the push surface 324 is separated from the other side 343b of the hook 343, due to the gravity of the hook 34, the hook 34 will move from the release position to the clamping position again until one side 343a of the hook 343 continues to cooperate with the stop surface 323 of the rotating frame 32 to lock the rotating frame 32 in the support position.

[0116] Through the design of the hook 34, when the operator needs to move the rotating frame 32 from the supporting position to the original position, he only needs to pull up the operating portion 342 of the hook 34, and the rotating frame 32 can be rotated to the original position. At the same time, although the rotating frame 32 is separated from the hook 34, the hook 34 will remain in the clamping position due to its own gravity.

[0117] When the operator needs to move the rotating frame 32 from the original position to the supporting position, he only needs to pull the rotating frame 32 upward, and the pushing surface of the rotating frame 32 gradually pushes against the other side of the hook 34, so that the hook 34 gradually moves from the clamping position to the loosening position, until one side 343a of the hook portion cooperates with the stop surface 323 again, so that the hook 34 locks the rotating frame 32.

[0118] Accordingly, the operator can complete the locking or loosening of the rotating frame 32 with only one action, which is convenient for operation and saves time.

[0119] In one embodiment, a surface of the hook 34 that cooperates with the pushing surface 324 is an arc surface.

[0120] like Figure 4 and Figure 5 As shown, each support unit of the embodiment of the present invention further includes a connecting mechanism 4, which is used to connect two adjacent support units to limit the distance between the two support units. On the one hand, by limiting the distance between the two support units, it is possible to prevent one of the support units from tilting relative to the other support unit, thereby affecting the support effect. On the other hand, connecting two adjacent support units to each other improves the structural strength between the two support units, thereby further improving the support strength.

[0121] Combine the following Figures 12 to 15 , the structure and working principle of the connecting mechanism 4 of the embodiment of the present invention are described in detail. Fig.12 FIG. 4 is a perspective view of a connecting mechanism 4 according to an embodiment of the present invention. Fig.13 FIG. 4 is a top view of a connecting mechanism 4 according to an embodiment of the present invention. Fig.14 FIG. 4 is a side view of a connecting mechanism 4 according to an embodiment of the present invention. Fig.15 It is shown that Fig.14 Enlarged view of J in the middle.

[0122] The connecting mechanism 4 of the embodiment of the present invention is used to connect two adjacent support units, such as the first support unit and the second support unit, to prevent one of the support units from tilting relative to the other support unit, thereby affecting the support effect. Further, the first support unit may be the roof that has been supported on the tunnel, that is, the support unit at the front end of the first group A support unit. The second support unit is not supported on the roof of the tunnel, that is, the second group B support unit. Through the design of the connecting mechanism 4 of the embodiment of the present invention, the distance between the first support unit and the second support unit can be limited to prevent the second support unit from tilting when it is opened. Of course, it can be understood that the connecting mechanism 4 can also connect two adjacent support units in the first group A support unit; or, two adjacent support units in the second group B support unit.

[0123] The connection mechanism 4 of the embodiment of the present invention includes a locking assembly and a fixing assembly, one end of the locking assembly is connected to the first supporting unit, and the fixing assembly is connected to the second supporting unit. The other end of the locking assembly is configured to be locked to the fixing assembly to limit the distance between the first supporting unit and the second supporting unit.

[0124] The first support unit includes a first support body 1a, two first mounting seats 171 arranged opposite to each other, and a guide rod 16. The two first mounting seats 171 are arranged at intervals along the vertical direction, the conductor rod is connected to the two first mounting seats 171 along the vertical direction, and the locking assembly can move along the guide rod 16. Through the design of the guide rod 16, the connection mechanism 4 of the embodiment of the present invention can move along the guide rod 16 to avoid the connection mechanism 4 and the first support unit from being stuck when the second support unit is opened.

[0125] The second support unit includes a second support body 1b, two oppositely arranged second mounting seats 172 and a mounting column 18. The two second mounting seats 172 are arranged at intervals in the vertical direction. The mounting column 18 is connected to the two second mounting seats 172 for connecting and fixing the assembly.

[0126] Along the vertical direction, one end of the locking assembly is movably connected to the first supporting unit, and the other end of the locking assembly is locked to the fixing assembly.

[0127] In one embodiment, the fixing assembly includes a fixing block 45 , the fixing block 45 has a through hole 451 , and the mounting post 18 is inserted through the through hole 451 of the fixing block 45 .

[0128] In one embodiment, the locking assembly includes a connector 41 and a locking member, one end of the connector 41 is connected to the first supporting unit, the locking member is hinged to the other end of the connector 41 and can be detachably locked to the fixing block 45 .

[0129] In one embodiment, the connecting member 41 includes a sleeve portion 411, a rod portion 412 and a hinge portion 413, wherein the sleeve portion 411 is disposed at one end of the rod portion 412, and the hinge portion 413 is disposed at the other end of the rod portion 412. The sleeve portion 411 is sleeved on the outside of the guide rod 16 of the first supporting unit and can move along the guide rod 16. The hinge portion 413 is hinged to the locking member.

[0130] The locking member includes a first rotating member 42, a second rotating member 43 and a locking member 44. One end of the first rotating member 42 is hinged to the hinge portion 413 of the connecting member 41, and one end of the second rotating member 43 is hinged to the hinge portion 413 of the connecting member 41. The first rotating member 42 and the second rotating member 43 can rotate relative to each other around the hinge point. The locking member 44 can lock the first rotating member 42 and the second rotating member 43, so that the fixing block 45 is sandwiched between the first rotating member 42 and the second rotating member 43. In other words, the first rotating member 42 and the second rotating member 43 clamp the fixing block 45.

[0131] In one embodiment, the first rotating member 42 has a first through hole (not shown), and the second rotating member 43 has a second through hole (not shown) corresponding to the first through hole. The locking member 44 is a locking bolt, which is passed through the first through hole and the second through hole to lock the first rotating member 42 and the second rotating member 43.

[0132] The fixed block 45 may be in a cubic shape, and the first rotating member 42 and the second rotating member 43 may be pressed against two opposite sides of the fixed block 45. The first rotating member 42 and the second rotating member 43 are locked to each other by the locking member 44, so that the first rotating member 42 is in frictional contact with one side of the fixed block 45, and the second rotating member 43 is in frictional contact with the other opposite side of the fixed block 45, and finally the distance between the first supporting unit and the second supporting unit is limited, so as to prevent one of the supporting units from tilting and affecting the supporting effect.

[0133] In one embodiment, the surface roughness of two opposite sides of the fixing block 45 is greater than the surface roughness of other sides of the fixing block 45. This can increase the friction between the locking member and the fixing block 45 and provide a better locking effect.

[0134] Combine the following Figures 16 to 19 , the structure and working principle of the track 5 of the embodiment of the present invention are described in detail. Fig.16 Shown is a stereoscopic view of a track 5 according to an embodiment of the present invention. Fig.17 Shown is a front view of a track 5 according to an embodiment of the present invention. Fig.18 Shown is a side view of a track 5 according to an embodiment of the present invention. Fig.19 It is shown that Fig.18 Enlarged view of K in the middle.

[0135] The track 5 of the embodiment of the present invention is applied to the support device, and is used to transport the support units of the second group B. The track 5 includes a guide rail 51 and a wheel frame 52. The guide rail 51 is configured to carry the support units of the second group B, and the support units of the second group B are movable relative to the guide rail 51. The wheel frame 52 is suspended from the guide rail 51 and movably connected to the guide rail 51. The wheel frame 52 is configured to abut against the rotating bracket 2 of the support units of the first group A, and the guide rail 51 is movable relative to the support units of the first group A. Among them, the support units of the second group B are in a contracted state, and the support units of the first group A are in an expanded state.

[0136] The track 5 of the embodiment of the present invention includes a guide rail 51 and a wheel frame 52 suspended on the guide rail 51, and the wheel frame 52 is movably connected to the guide rail 51. The guide rail 51 can carry the second group B support unit in a contracted state, and the wheel frame 52 can abut against the rotating bracket 2 of the first group A support unit in an expanded state. With the help of the track 5, the second group B support unit can move forward relative to the first group A support unit, thereby realizing advanced support.

[0137] The track 5 of the embodiment of the present invention further includes a first winch 53 and a second winch 54. The first winch 53 is provided at one end of the guide rail 51 and is configured to drive the second group B support unit to move forward relative to the guide rail 51. The second winch 54 is provided at the other end of the guide rail 51 and is configured to drive the track 5 to move forward relative to the first group A support unit.

[0138] Specifically, the first winch 53 can be connected to the second group B support unit. When the first winch 53 is working, the second group B support unit can be pulled by the first winch 53 to move forward relative to the track 5. The second winch 54 can be connected to the first group A support unit. Since the first group A support unit is in an expanded state, the first group A support unit can abut against the top plate of the tunnel, so the first group A support unit is fixed. When the second winch 54 is working, the track 5 can move forward relative to the first group A support unit.

[0139] The guide rail 51 of the embodiment of the present invention may include a top and two oppositely disposed side portions, one end of the two side portions being respectively connected to two opposite sides of the top to form a guide space 57. The other ends of the two side portions are spaced apart to form a strip-shaped opening 58.

[0140] In one embodiment, the top portion may be an I-beam 511 , and the two side portions may be a first angle steel 512 and a second angle steel 513 .

[0141] The I-beam 511 includes a middle beam 5111, a first side beam 5112 and a second side beam 5113. The middle beam 5111 is vertically arranged and arranged between the first side beam 5112 and the second side beam 5113. The second side beam 5113 is located below the first side beam 5112. The first angle steel 512 includes two side plates perpendicular to each other, and the second angle steel 513 includes two side plates perpendicular to each other. A side plate 5121 of the first angle steel 512 and a side plate 5131 of the second angle steel 513 are respectively connected to two opposite sides of the second side beam 5113 and are perpendicular to the second side beam 5113. The other side plate 5122 of the first angle steel 512 and the other side plate 5132 of the second angle steel 513 are both parallel to the second side beam 5113 and are arranged at intervals.

[0142] The second side beam 5113, the first angle steel 512 and the second angle steel 513 together form a guide space 57. The guide space 57 is used to movably accommodate part of the wheel frame 52. The other side plate 5122 of the first angle steel 512 and the other side plate 5132 of the second angle steel 513 form a strip opening 58, which is connected to the guide space 57. The mounting frame 523 can be inserted into the strip opening 58.

[0143] The wheel frame 52 includes a mounting frame 523, a first wheel group and a second wheel group, wherein the first wheel group is connected to one end of the mounting frame 523, and the second wheel group is connected to the other end of the mounting frame 523. The first wheel group is movably accommodated in the guide space 57, and the second wheel group is arranged outside the guide space 57 and can abut against the rotating bracket 2 of the first group A support unit.

[0144] In one embodiment, the first wheel group includes two first rollers 521 arranged in pairs, and the second wheel group includes four second rollers 522 arranged in pairs, and the axis of the first roller 521 is perpendicular to the axis of the second roller 522. The two first rollers 521 are respectively connected to the other side plate 5122 of the first angle steel 512 and the other side plate 5132 of the second angle steel 513 in a rollable manner. At the same time, when the wheel frame 52 abuts against the second support unit, the two first rollers 521 abut against the second side beam 5113 to realize the rotation bracket 2 bearing track 5 of the first group A support unit.

[0145] The mounting frame 523 of the embodiment of the present invention includes a first plate 5231, a second plate 5232 and a third plate 5233. Two first rollers 521 are rotatably connected to the first plate 5231. The first plate 5231 is inserted into the strip opening 58 and can move along the strip opening 58. The width of the strip opening 58 can be slightly larger than the thickness of the first plate 5231. The second plate 5232 is horizontally arranged and connected to the first plate 5231. The second plate 5232 can be perpendicular to the first plate 5231. Four second rollers 522 are rotatably connected to the third plate 5233. The third plate 5233 is vertically arranged and connected to the second plate 5232. The third plate 5233 can be perpendicular to the second plate 5232.

[0146] The track 5 of the embodiment of the present invention further includes a plurality of reinforcing components 56 , which are spaced apart along the track 5 , and are connected to the I-beam 511 , the first angle steel 512 , and the second angle steel 513 , for example, by welding, to improve the structural strength of the guide rail 51 .

[0147] The track 5 of the embodiment of the present invention further includes two stoppers 55 , which are respectively disposed at two ends of the guide space 57 to stop the wheel frame 52 and prevent the wheel frame 52 from escaping from the guide space 57 .

[0148] Another aspect of the present invention provides a tunneling system. Fig. 20 As shown, Fig. 20 The structural schematic diagram of the tunneling system of the embodiment of the present invention is shown. The tunneling system of the embodiment of the present invention comprises the support device 100, the tunneling machine 200, the anchor drilling machine 300 and the conveyor 400 of any of the above embodiments. Since the tunneling system of the embodiment of the present invention comprises the support device of any of the above embodiments, the tunneling system of the embodiment of the present invention has the advantages and beneficial effects of any of the above embodiments, which will not be described in detail here.

[0149] The tunnel boring machine 200 is arranged at the front end of the tunnel, and the tunnel boring machine 200 realizes tunnel excavation by cutting. The anchor drilling machine 300 is located behind the tunnel boring machine, and is used to carry out anchor protection operations on the roof and side walls of the tunnel, and to transfer and transport the materials cut by the tunnel boring machine 300. The conveyor 400 is located behind the anchor drilling machine 300, and realizes long-distance transportation of materials (coal, rock or semi-coal rock cut by the tunnel boring machine).

[0150] In summary, the advantages and beneficial effects of the support device and tunneling system of the embodiments of the present invention are:

[0151] The support device of the embodiment of the present invention adopts a cyclic progressive method to transmit the support unit in a contracted state forward to actively support the tunnel roof, which significantly improves the support efficiency and greatly reduces the labor intensity of workers.

[0152] In addition, when the second group of support units are transported forward, the second group of support units can be temporarily stored in the middle of the coverage area of ​​the first group of support units to become prefabricated support units. After the support units in front are converted to the expanded state, the prefabricated support units are transported forward. At the same time, the operator can disassemble the support units located behind the first group to continue to transport them forward. Through such a design, the transport of the support units and the disassembly of the rear support units can be carried out in parallel, further improving the support efficiency.

[0153] In the embodiments of the invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the invention can be understood according to the specific circumstances.

[0154] In the description of the embodiments of the invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the embodiments of the invention.

[0155] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the invention embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0156] The above are only preferred embodiments of the invention embodiments, and are not intended to limit the invention embodiments. For those skilled in the art, the invention embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the invention embodiments shall be included in the protection scope of the invention embodiments.

Claims

1. A support device, characterized in that: It comprises a plurality of support units, each of which comprises a contracted state and an expanded state; the plurality of support units are divided into two groups, namely a first group and a second group, the plurality of support units in the first group are arranged side by side, and each of the support units is in an expanded state, and each of the support units in the second group is in a contracted state; Each of the support units comprises: Support frame; A rotating bracket rotatably connected to the support frame, wherein the rotating bracket can rotate between a carrying position and a stowed position; A support assembly rotatably connected to the support frame, wherein the support assembly can rotate between a support position and an original position; wherein at least two rotating brackets in the first group are located at a carrying position, and the remaining rotating brackets are located at a stowed position, and the at least two rotating brackets are supported by a supporting assembly in the second group that is in a supporting position, and the at least two rotating brackets are movably connected to the supporting assembly in the second group, so that the second group can be transported forward through the first group; Wherein, the rotating bracket in the first group located behind the second group can be rotated from a stowed position to a load-bearing position, and the rotating bracket in the first group located in front of the second group can be rotated from a load-bearing position to a stowed position, so that the rotating bracket in the rear replaces the rotating bracket in the front to support the second group; wherein the support device also includes a track, the rotating bracket is supported on the track, and the track is supported on the support assembly; the track is movably connected to the rotating bracket and the support assembly.

2. The support device according to claim 1, characterized in that: The track includes a guide rail and a wheel frame, wherein the wheel frame is suspended from the guide rail and movably connected to the guide rail; The guide rail is configured to carry the support assembly, and the support assembly is movable relative to the guide rail; the rotating bracket is supported by the wheel frame.

3. The support device according to claim 2, characterized in that: The guide rail includes a guide space with a strip-shaped opening; the wheel frame includes a mounting frame, a first wheel set and a second wheel set; the mounting frame is inserted through the strip-shaped opening and can move along the strip-shaped opening; one end of the mounting frame located inside the guide space is rotatably connected to the first wheel set, and the other end of the mounting frame located outside the guide space is rotatably connected to the second wheel set; the first wheel set is movably accommodated in the guide space; The rotating bracket includes a frame body, a cover body and a stopper, one end of the frame body is rotatably connected to the support frame, the other end of the frame body is provided with a receiving groove toward the position of the wheel frame, the receiving groove extends along the width direction of the lane, the second wheel set is movably received in the receiving groove, and the receiving groove has an opening; The cover body is rotatably connected to the frame body, and the cover body includes a closed state and an open state relative to the frame body; in the closed state, the cover body covers a portion of the receiving groove, and the second wheel set is confined in the receiving groove; in the open state, the cover body does not cover the receiving groove, and the wheel frame can enter and exit the receiving groove through the opening; One end of the stopper is hinged to the frame, and includes an open state and a closed state relative to the frame; when the stopper is in the open state, the cover can be rotated from the closed state to the open state, and when the stopper is in the closed state, the other end of the stopper is inserted into a groove of the frame to stop the cover from rotating.

4. The support device according to claim 3, characterized in that: The rotating bracket also includes a lifting assembly, a magnetic member and a locking assembly; The lifting assembly is arranged on the support frame and connected to the frame body, and is used to lift the frame body in a vertical direction; the magnetic member is arranged on the frame body, and is configured to be magnetically adsorbed to the support frame when the rotating bracket is in the retracted position, so as to confine the rotating bracket in the retracted position; the locking assembly is configured to lock the rotating bracket when the rotating bracket is in the load-bearing position.

5. The support device according to claim 2, characterized in that: The support assembly comprises: A fixing seat, fixedly connected to the supporting frame; A rotating frame, the rotating frame is rotatably connected to the fixed seat; A wheel set is movably connected to the rotating frame, the wheel set is configured to be supported by the guide rail, and the wheel set is movably connected to the guide rail.

6. The support device according to claim 5, characterized in that: The rotating frame has a guide space, and when the supporting assembly is located at the supporting position, the guide space extends along the width direction of the lane; the guide space has a strip opening, and the strip opening extends along the guide space; The wheel group includes a first roller group, a penetration portion, a mounting portion and a second roller group; the first roller group is rotatably connected to one end of the penetration portion, the penetration portion is inserted through the strip opening and can move along the strip opening; The mounting portion is connected to the other end of the penetration portion, the second roller group is rotatably connected to the mounting portion, and the second roller group is movably connected to the guide rail.

7. The support device according to claim 5, characterized in that: The support assembly further comprises a hook for limiting the support assembly in a support position; one end of the rotating frame connected to the fixed seat comprises a push surface and a stop surface; The hook is rotatably connected to the fixing seat and can rotate between a clamping position and a loosening position; The hook comprises a connecting portion, an operating portion and a hook portion, wherein the connecting portion is rotatably connected to the rotating frame, and the operating portion is connected to the connecting portion and is configured for a user to operate the hook to rotate through the operating portion; The hook portion is connected to the connecting portion, and when the hook is in the clamping position, one side of the hook portion can cooperate with the stop surface to fix the supporting assembly in the supporting position; the other side of the hook portion can cooperate with the pushing surface, and when the rotating frame moves from the original position to the supporting position, the pushing surface can push the other side of the hook portion, so that the hook rotates from the clamping position to the releasing position until the hook returns to the clamping position.

8. The support device according to claim 2, characterized in that: The track also includes a first capstan and a second capstan; The first capstan is disposed at one end of the guide rail and is configured to drive the second group to move forward relative to the guide rail; The second winch is disposed at the other end of the guide rail and is configured to drive the rail to move forward relative to the first group.

9. The support device according to claim 1, characterized in that: The support device further comprises a connecting mechanism for connecting two adjacently arranged support units; The connecting mechanism comprises a connecting member, a first rotating member, a second rotating member, a locking member and a fixing block, one end of the connecting member is movably connected to one of two adjacent supporting units, and the fixing block is connected to the other supporting unit; One end of the first rotating member is hinged to the other end of the connecting member, and one end of the second rotating member is hinged to the other end of the connecting member, and the first rotating member and the second rotating member can rotate relative to each other around the hinge point; The locking member can lock the first rotating member and the second rotating member, so that the fixing block is sandwiched between the first rotating member and the second rotating member.

10. A tunneling system, characterized in that: include: The support device according to any one of claims 1 to 9, used for temporary support of a tunnel; Roadheaders, used for cutting and excavating tunnels; An anchoring drill, arranged at the rear of the tunnel boring machine, configured to anchor the roof and side walls of the tunnel and to transfer and transport the materials cut by the tunnel boring machine; and The conveyor is used to transport the materials cut by the tunnel boring machine to the rear of the tunnel.

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