Tunnel lining trolley with ventilation pipe

Abstract

The invention discloses a tunnel lining trolley with a ventilation pipe, the ventilation pipe is hung on the inner wall of a tunnel through a hoisting mechanism, the hoisting mechanism comprises a hanging point arranged on the inner wall of the tunnel, the ventilation pipe is provided with an inhaul cable, the inhaul cable is hung on the hanging point through a hook, the lining trolley comprises a portal, the portal is movably provided with a transfer table along the longitudinal direction, and the transfer table is arranged on the portal. A grabbing mechanism is arranged on the transfer table, and when the portal frame moves longitudinally, the transfer table moves opposite to the portal frame. When the trolley moves, the hook can be taken out from the hanging point through the grabbing mechanism, and the hook and the grabbing mechanism are synchronously driven by the transfer table to move opposite to the trolley, so that the hook and the ventilation pipe are kept opposite, and the situation that the inhaul cable is snapped is not prone to occurring. Compared with the prior art, automatic taking-out and hanging-back of the hook are achieved through the grabbing mechanism, the trolley can achieve automatic crossing of the hanging point of the ventilation pipe, and lining operation is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction ventilation, in particular to a tunnel lining trolley with a ventilation pipe. Background Art

[0002] With the development of economy, more and more rail and highway constructions are being built, which have brought great convenience to people's life and production. In these constructions, many tunnels need to be excavated or built. There is a construction method called lining in tunnel construction. Lining refers to a permanent support structure built with reinforced concrete and other materials along the perimeter of the tunnel body to prevent deformation or collapse of the surrounding rock. A lining trolley is required for lining.

[0003] At present, the Chinese patent with the announcement number CN106194208B discloses a tunnel lining trolley with a ventilation pipe, including front and rear door frames, on which a top mold assembly and a side mold assembly are arranged, and a space for the ventilation pipe to pass through is formed on the top of the trolley. The Chinese patent with the announcement number CN203702179U also provides a similar concept that the trolley does not interfere with the ventilation pipe.

[0004] The ventilation pipe is usually installed on the inner wall of the tunnel by hoisting. When the trolley moves, it will interfere with the rope used for hoisting. Therefore, every time the trolley moves, it is necessary to manually remove the rope and hang it back after the trolley passes the hoisting point. This process is inconvenient. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a tunnel lining trolley with a ventilation pipe.

[0006] The objective of the present invention is achieved through the following technical solutions: A tunnel lining trolley with a ventilation pipe, the ventilation pipe is suspended on the inner wall of the tunnel by a lifting mechanism, the lifting mechanism includes a hanging point arranged on the inner wall of the tunnel, the ventilation pipe is provided with a cable, and the cable is hung on the hanging point through a hook, the lining trolley includes a portal frame, the portal frame is provided with a top mold assembly and a side mold assembly, and the portal frame also has an escape space for the ventilation pipe to pass through, the portal frame is provided with a transfer platform movably provided in the longitudinal direction, the transfer platform is provided with a grasping mechanism, the grasping mechanism is adapted to be able to detach the hook from the hanging point, and the grasping mechanism is also adapted to be able to re-hang the grabbed hook on the hanging point; when the portal frame moves longitudinally, the transfer platform moves in the opposite direction to the portal frame.

[0007] Preferably, the ventilation pipe is suspended at the top of the tunnel, and the avoidance space and the transfer platform are both arranged at the top of the portal.

[0008] Preferably, the transfer platform realizes longitudinal movement through a screw transfer mechanism.

[0009] Preferably, the grasping mechanism is a multi-degree-of-freedom manipulator.

[0010] Preferably, the gantry is provided with an electric track, the transfer platform is formed on a slide of the electric track, and the longitudinal cross-section of the electric track is U-shaped.

[0011] Preferably, both ends of the electric rail extend out of the top mold assembly.

[0012] Preferably, a mounting plate is rotatably provided on the transfer platform, and the grabbing mechanism is arranged on the mounting plate. The grabbing mechanism is adapted to be able to be attached to the bottom of the hook, and then the mounting plate is rotated to adjust the posture of the hook so as to hang it into or take it out from the hanging point.

[0013] Preferably, a gear is provided on the mounting plate, and a first rack and a second rack are further provided on the gantry on the side of the electric rail, the first rack and the second rack are respectively located at two ends of the electric rail, and through the transfer control of the electric rail, the lining trolley has at least: a hook-taking mode: the grabbing mechanism is attached to the hook, the electric rail drives the transfer platform to continue to move upward, the gear is engaged with the first rack, and the mounting plate is rotated to rotate the hook out of the hanging point; a hooking mode: the electric rail drives the transfer platform to move longitudinally, the gear is engaged with the second rack, and the mounting plate is rotated to cause the hook to rotate until the transfer platform passes through the arc section of the electric rail, and the hook is readjusted to a vertical state.

[0014] Preferably, the ventilation pipe is a flexible pipe, and the lining trolley has at least: a tensioning mode: the rotation of the rotating plate is controlled according to the height of the hook so that the cable is wound up to apply an upward pulling force to the ventilation pipe.

[0015] Preferably, the grabbing mechanism comprises an electromagnet, and the electromagnet can be adsorbed on the bottom side of the hook when energized.

[0016] The beneficial effects of the present invention are: 1. When the trolley moves, the hook can be taken out from the hanging point through the grabbing mechanism, and the hook and the grabbing mechanism are also synchronously driven by the transfer platform to move in the opposite direction of the trolley, so that the hook and the ventilation pipe remain relative to each other, and the cable is not easily broken. Compared with the prior art, the present invention realizes the automatic removal and rehanging of the hook through the grabbing mechanism, and the trolley can realize the automatic crossing of the ventilation pipe hanging point, making the lining operation more convenient.

[0017] 2. The grasping mechanism is a multi-degree-of-freedom manipulator, which makes the present invention more intelligent.

[0018] 3. The grabbing mechanism is transferred by a U-shaped electric track, which provides vertical freedom for the grabbing mechanism, simplifies the structure of the grabbing mechanism, and reduces the cost accordingly.

[0019] 4. The present invention can automatically switch between the hook removal mode and the hook hooking mode through the cooperation of the electric track, the first rack, the second rack and the gear, thereby reducing the complexity of system control and improving mechanical reliability accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the lifting mechanism; Figure 2 It is a front view structural schematic diagram of an embodiment; Figure 3 This is a schematic diagram of the installation position of the multi-degree-of-freedom manipulator; Figure 4 It is a structural schematic diagram of the electric track; Figure 5 It is a schematic diagram of the moving state of the hook being transferred by the grabbing mechanism; Figure 6 A schematic diagram of the structure of the hook.

[0021] Figure numerals: 1. lifting mechanism; 2. hanging point; 3. cable; 4. gantry; 5. transfer platform; 6. electric track; 7. mounting plate; 8. gear; 9. first rack; 10. second rack; 11. top mold assembly; 12. side mold assembly; 13. avoidance space; 14. trolley; 15. ventilation duct; 16. hook; 17. multi-degree-of-freedom manipulator; 18. grasping mechanism; 19. disk; 20. hook body; 21. winding groove. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0023] like Figure 1 , Figure 3 As shown, the ventilation pipe 15 is generally suspended by the lifting mechanism 1 on the inner wall of the tunnel, for example, it is suspended on the central top of the tunnel, and fresh air is blown into the ventilation pipe 15 through a fan (not shown) outside the tunnel. Then the ventilation pipe 15 can guide the air into the tunnel for the breathing of the workers and the oxygen consumption of the internal combustion working equipment.

[0024] The hoisting mechanism 1 usually includes a hanging point 2 arranged on the inner wall of the tunnel. For example, during the initial support, a lifting ring is buried on the inner wall of the tunnel as the hanging point 2. A cable 3 is fixedly arranged at a certain interval on the ventilation pipe 15. A hook 16 is arranged at the end of the cable 3. The ventilation pipe 15 is hung by hanging the hook 16 in the lifting ring.

[0025] Although the prior art is designed with a lining trolley 14 that can allow the ventilation pipe 15 to pass, the cable 3 will still interfere with the trolley 14 when it moves. For this reason, the cable 3 needs to be manually removed in advance and then hung back after the trolley 14 passes the lifting point. This process is relatively inconvenient.

[0026] In this regard, Figures 2 to 6 As shown, the present invention provides a tunnel lining trolley with a ventilation pipe, including a gantry 4. Similar to the prior art, the gantry 4 is provided with a top mold assembly 11, a side mold assembly 12, and a self-propelled mechanism, a hydraulic system, etc. These components are all prior art, and can be seen in CN203702179U and CN106194208B, so they will not be repeated. Of course, the top of the gantry 4 also forms an escape space 13 for the ventilation pipe 15 to pass through.

[0027] Different from the prior art, a transfer platform 5 which can move longitudinally is also provided on the top of the door frame 4 of the present invention, and a grabbing mechanism 18 is also provided on the transfer platform 5, and the grabbing mechanism 18 is adapted to be able to remove the hook 16 from the hanging point 2, and also to be able to re-hang the grabbed hook 16 on the hanging point 2.

[0028] When the trolley 14 moves, for example, when the trolley 14 moves further into the tunnel, the grabbing mechanism 18 is transferred to the forward end of the trolley 14 to grab the hook 16 before the trolley 14 arrives at the hanging point 2, and then the transfer platform 5 will drive the grabbing mechanism 18 and the hook 16 to move in the opposite direction of the door frame 4, so as to maintain the relative position between the hook 16 and the ventilation pipe 15, and it is not easy for the cable 3 to be broken; when the trolley 14 passes the hanging point 2, the grabbing mechanism 18 can re-hang the hook 16 on the hanging point 2, thereby realizing the automatic crossing of the trolley 14 over the hanging point of the ventilation pipe 15.

[0029] In some embodiments, a screw transfer mechanism is provided on the top of the gantry 4, and the transfer platform 5 is attached to the moving part of the screw transfer mechanism. The screw transfer mechanism is a prior art, which can convert rotational power (such as a motor) into driving force, so that the transfer platform 5 can move along the axial direction of the screw.

[0030] For example, the grasping mechanism 18 can be a multi-degree-of-freedom manipulator 17, and the multi-degree-of-freedom manipulator 17 is also a prior art, and the present invention does not elaborate on its specific structure and operating principle. In short, the manipulator can have multiple degrees of freedom. For example, for the simplest three-degree-of-freedom manipulator, it can be composed of transfer components in the horizontal, vertical and vertical directions that cooperate with each other and a clamp is set at the execution end, and the hook 16 is grasped and removed from the hanging point 2 by the clamp.

[0031] In a preferred example, a visual mechanism (not shown) can also be set on the transfer platform 5, and the position of the hanging point 2 can be photographed and detected by the visual mechanism, and then the multi-degree-of-freedom manipulator 17 is controlled to move the clamp to the hanging point 2, and then the hook 16 can be grabbed. Of course, it is also possible to calculate according to parameters such as the moving distance of the trolley 14 and the hanging height of the hook 16, so as to obtain the transfer action stroke of the multi-degree-of-freedom manipulator 17 so that the clamp is opposite to the hook 16, and finally the grab is completed. Similarly, when the trolley 14 passes the hanging point 2, the multi-degree-of-freedom manipulator 17 can raise the hook 16 again and hang it in the hanging point 2.

[0032] However, in the above embodiment, the implementation of the solution depends on the execution accuracy of the multi-degree-of-freedom manipulator 17 and the reliability of the electric control, and also causes an increase in cost. Figure 4 , Figure 5 As shown, the inventor also provides another embodiment with higher mechanical reliability: In this embodiment, an electric track 6 is provided on the gantry 4, and the transfer platform 5 is provided or constructed on the slide of the electric track 6. The electric track 6 is a prior art and will not be described in detail. For example, the longitudinal section of the electric track 6 may preferably be U-shaped, and this technology can refer to the electric track 6 used for the U-shaped transfer electric hoist. In this embodiment, since the electric track 6 is provided in the same longitudinal section, the two ends of the electric track 6 can provide vertical freedom for the grasping mechanism 18, the structure of the grasping mechanism 18 is simplified, and the cost is correspondingly reduced.

[0033] For example, both ends of the electric track 6 are also adapted to extend out of the top mold assembly 11, so that the grabbing mechanism 18 can more easily grab the hook 16 before the trolley 14 arrives at the hanging point 2. More specifically, a mounting plate 7 is rotatably provided on the transfer platform 5, and the grabbing mechanism 18 is provided on the mounting plate 7. As the transfer platform 5 gradually rises along the electric track 6, the grabbing mechanism 18 can be opposite to the hook 16 and attached to the hook 16 to complete the fixation. At this time, the rotation of the mounting plate 7 can drive the grabbing mechanism 18 and the hook 16 to rotate synchronously, that is, the posture of the hook 16 can be adjusted, especially the hook 16 can be gradually rotated out of the hanging point 2 or re-rotated into the hanging point 2.

[0034] During the complete movement of the trolley 14: the trolley 14 moves in the longitudinal direction, the transfer platform 5 is at the forward end of the electric track 6 and makes the grabbing mechanism 18 first relative to the hook 16, then the grabbing mechanism 18 is relative to the bottom of the hook 16 and completes the attachment, and the mounting plate 7 rotates immediately to make the hook 16 rotate out of the hanging point 2; the transfer platform 5 drives the hook 16 downward into the straight section of the electric track 6, the trolley 14 continues to move forward, and the transfer platform 5 moves backward synchronously, so that the hook 16 and the ventilation pipe 15 maintain a relative state; when the trolley 14 passes the hanging point 2, the transfer platform 5 continues to move backward into the curved section of the electric track 6, the hook 16 rises again, and then the mounting plate 7 rotates to drive the hook 16 to be screwed back into the hanging point 2, the grabbing mechanism 18 then releases the hook 16, and the trolley 14 thus completes the automatic crossing of the hanging point 2.

[0035] The rotation of the mounting plate 7 can be powered by a rotation drive source such as a motor or a rotary cylinder. For example, when the ventilation pipe 15 is a flexible pipe, the present invention can also provide the following usage modes: Tensioning mode: After the above-mentioned grabbing mechanism 18 completes grabbing of the hook 16 and removes it from the hanging point 2, the transfer platform 5 drives the hook 16 to move downward. At this time, the height difference between the hook 16 and the ventilation pipe 15 gradually decreases. At the same time, the mounting plate 7 rotates and drives the cable 3 to reel in, that is, the cable 3 will remain in a tensioned state, thereby always exerting an upward pulling force on the ventilation pipe 15.

[0036] It can be understood that if the present invention does not have the above-mentioned tensioning mode, as the height difference between the hook 16 and the ventilation pipe 15 decreases, the cable 3 will no longer be in the tensioning state, and the cable 3 will no longer exert tension on the ventilation pipe 15. Since the ventilation pipe 15 is a flexible pipe, it will fall under the action of gravity and easily interfere with the trolley 14 and cause damage. The present invention is not prone to collision between the ventilation pipe 15 and the trolley 14 through the tensioning mode.

[0037] For example, the gripping mechanism 18 may preferably include an electromagnet. When the mounting plate 7 is opposite to the hook 16, the electromagnet is energized to adsorb the bottom side of the hook 16, thereby completing the attachment of the gripping mechanism 18 to the hook 16. Figure 6 As shown, the hook 16 may preferably include a disk body 19 and a hook body 20 arranged on the disk body 19, wherein the disk body 19 may be made of magnetic material, and the side of the disk body 19 may provide a plane that is easier to be adsorbed by an electric magnet, so that the attachment state of the grasping mechanism 18 and the hook 16 is more stable and reliable.

[0038] In a more preferred example, a winding groove 21 may be further configured on the outer periphery of the disc 19. In the tensioning mode, when the mounting plate 7 drives the hook 16 to rotate, the cable 3 may be reeled into the winding groove 21. Alternatively, a winding post may be configured on the side wall of the disc 19 away from the mounting plate 7, and the cable 3 may be reeled on the winding post.

[0039] In other examples, a gear 8 is provided on the side of the mounting plate 7 away from the grabbing mechanism 18, and a first rack 9 and a second rack 10 are provided on the gantry 4 beside the electric track 6, and the two racks are respectively located at the two ends of the electric track 6. In these examples, the hook-taking and hook-hanging 16 actions of the present invention no longer rely on the above-mentioned rotation drive source, for example, the transfer control of the electric track 6 can be used to enable the present invention to have the following usage modes: Hook removal mode: 1. First, control the transfer platform 5 to move to the first preset position, in which the grabbing mechanism 18 and the hook 16 are at the same height. As the trolley 14 moves forward, the grabbing mechanism 18 and the hook 16 will be in relative positions; 2. Subsequently, the grabbing mechanism 18 is attached to the hook 16; 3. Continue to control the electric track 6 to move upward, at this time the gear 8 will mesh with the first rack 9 and rotate, and finally drive the hook 16 to rotate out from the hanging point 2. Since the rotation point of the hook 16 is lower than the hanging point 2, the hook 16 will be rotated to be lower than the hanging point 2, the trolley 14 continues to move forward, and the hook 16 can smoothly pass the hanging point 2; 4. Control the transfer platform 5 to descend again, and the hook 16 is rotated again to be in a vertical state; 5. Along the transfer direction of the electric track 6, the transfer platform 5 passes through the first curved section of the electric track 6, and the hook 16 is adjusted to a horizontal posture.

[0040] Hook Mode: 1. The hook 16 is driven by the transfer platform 5 to move in the longitudinal direction in a horizontal posture. At this time, the gear 8 will mesh with the second rack 10, so that the hook 16 rotates, and this rotation can adjust the posture of the hook 16; 2. After the transfer platform 5 passes through the curved section of the second electric track 6, the hook 16 will be readjusted to a vertical state; 3. As the trolley 14 moves forward, the hook body 20 of the hook 16 will enter the hanging point 2. At this time, the grasping mechanism 18 is controlled to release the hook 16, and the hook 16 can be buckled to the hanging point 2 under the action of gravity.

[0041] It can be understood that if the above-mentioned second rack 10 is not provided, when the transfer platform 5 drives the hook 16 in a horizontal posture to pass through the curved section of the second electric rail 6, the hook 16 will be in a flipped posture, that is, the hook body 20 of the hook 16 will be at the bottom relative to the disk body 19, and cannot enter the hanging point 2 to realize the movement of the hook 16.

[0042] For example, driven by the second rack 10 , the hook 16 can be flipped from a horizontal posture facing left to a horizontal posture facing right. At this time, the hook 16 can be adjusted to the expected vertical state after passing through the curved section of the second electric track 6 .

[0043] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A tunnel lining trolley with a ventilation pipe, wherein the ventilation pipe (15) is suspended on the inner wall of the tunnel by a suspension mechanism (1), the suspension mechanism (1) comprises a suspension point (2) arranged on the inner wall of the tunnel, a cable (3) is arranged on the ventilation pipe (15), and the cable (3) is suspended on the suspension point (2) by a hook (16), the lining trolley (14) comprises a door frame (4), a top mold assembly (11) and a side mold assembly (12) are arranged on the door frame (4), and an escape space (13) for the ventilation pipe (15) to pass through is also formed in the door frame (4), wherein: A transfer platform (5) is movably provided on the door frame (4) in the longitudinal direction, and a grabbing mechanism (18) is provided on the transfer platform (5). The grabbing mechanism (18) is adapted to be able to disengage the hook (16) from the hanging point (2), and the grabbing mechanism (18) is also adapted to be able to re-hang the grabbed hook (16) on the hanging point (2); When the door frame (4) moves longitudinally, the transfer platform (5) moves in the opposite direction to the door frame (4).

2. The tunnel lining trolley with ventilation pipe according to claim 1 is characterized in that: The ventilation pipe (15) is suspended on the top of the tunnel, and the avoidance space (13) and the transfer platform (5) are both arranged on the top of the door frame (4).

3. The tunnel lining trolley with ventilation pipe according to claim 1 is characterized in that: The transfer platform (5) is longitudinally moved by a screw transfer mechanism.

4. The tunnel lining trolley with ventilation pipe according to claim 1 or 3, characterized in that: The grasping mechanism (18) is a multi-degree-of-freedom manipulator (17).

5. The tunnel lining trolley with ventilation pipe according to claim 1 is characterized in that: An electric track (6) is arranged on the door frame (4), the transfer platform (5) is formed on a slide of the electric track (6), and the longitudinal section of the electric track (6) is U-shaped.

6. The tunnel lining trolley with ventilation pipe according to claim 5 is characterized in that: Both ends of the electric track (6) extend out of the top mold assembly (11).

7. The tunnel lining trolley with ventilation pipe according to claim 5 is characterized in that: A mounting plate (7) is rotatably provided on the transfer platform (5), and the gripping mechanism (18) is provided on the mounting plate (7). The gripping mechanism (18) is adapted to be attached to the bottom of the hook (16), and then the mounting plate (7) is rotated to adjust the posture of the hook (16) so as to be hung in the hanging point (2) or taken out from the hanging point (2).

8. The tunnel lining trolley with ventilation pipe according to claim 7 is characterized in that: The mounting plate (7) is provided with a gear (8), and the gantry (4) is also provided with a first rack (9) and a second rack (10) located beside the electric track (6). The first rack (9) and the second rack (10) are respectively located at two ends of the electric track (6). By controlling the transfer of the electric track (6), the lining trolley (14) has at least: Hook removal mode: the grabbing mechanism (18) is attached to the hook (16), the electric track (6) drives the transfer platform (5) to continue to move upward, the gear (8) is engaged with the first rack (9), and the mounting plate (7) rotates to rotate the hook (16) out of the hanging point (2); Hook mode: the electric track (6) drives the transfer platform (5) to move longitudinally, the gear (8) engages with the second rack (10), and the mounting plate (7) rotates to cause the hook (16) to rotate until the transfer platform (5) passes through the arc section of the electric track (6), and the hook (16) is readjusted to a vertical state.

9. The tunnel lining trolley with ventilation pipe according to claim 7, characterized in that: The ventilation pipe (15) is a flexible pipe, and the lining trolley (14) at least has: Tensioning mode: the rotation of the rotating plate is controlled according to the height of the hook (16), so that the cable (3) is rolled up to exert an upward pulling force on the ventilation pipe (15).

10. The tunnel lining trolley with ventilation pipe according to any one of claims 7 to 9, characterized in that: The grabbing mechanism (18) comprises an electromagnet, which can be adsorbed on the bottom side of the hook (16) when energized.

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