Synchronous inverted arch pouring equipment, construction method and heading machine

Abstract

The invention provides synchronous inverted arch pouring equipment, a construction method and a tunneling machine, and belongs to the technical field of tunneling. The synchronous inverted arch pouring equipment comprises a rear matching trailer set, a concrete pumping pipe used for pumping inverted arch concrete is arranged on the rear matching trailer set, the front end of the concrete pumping pipe is connected with a grouting structure, and a driving mechanism used for driving the grouting structure to move front and back to conduct inverted arch concrete pouring is arranged on the rear matching trailer set. The concrete pumping pipe comprises a stretching recovery pipe capable of stretching forwards and recovering backwards so as to accommodate the back-and-forth action of the grouting structure. During construction, the grouting structure is not affected by forward tunneling of the heading machine within a certain range, namely, after the heading machine conducts forward tunneling, the grouting structure can move backwards under the action of the driving mechanism, so that concrete in the area is fully poured, and therefore the pouring range capable of being covered by the grouting structure can be longer than that of the technology; and therefore, frequent mounting and dismounting of the formwork can be reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to synchronous invert arch casting equipment, a construction method and a tunnel boring machine, belonging to the technical field of tunnel boring. Background Art

[0002] Shield construction is the main method of tunnel construction at present. Subway, railway, highway and other tunnels constructed by shield construction often need secondary lining arch. At present, the arch construction methods mainly include prefabricating the arch and assembling it in the tunnel and casting the arch in the tunnel. Among them, the casting of the arch in the tunnel can be divided into artificially built casting platform casting, arch trestle casting, etc. These construction methods all require the construction of additional equipment, which has the disadvantages of high personnel investment, high equipment cost and long construction period.

[0003] In this regard, the Chinese invention patent application with application publication number CN118065932A discloses a synchronous invert lining construction method and equipment. The synchronous invert lining construction equipment is connected to the rear of the tunnel boring machine, and is responsible for material transportation and invert lining construction. The synchronous invert lining construction equipment includes a rear supporting trailer group and a protective trailer group. The rear supporting trailer group is divided into three construction areas from front to back, namely, the tunnel bottom slag cleaning area, the steel cage construction area, and the concrete pouring area. The protective trailer group is used as a maintenance area. During construction, each construction area of ​​the equipment performs construction operations simultaneously to achieve tunnel bottom slag cleaning, steel cage binding, concrete pouring, and later maintenance. Among them, the concrete used for concrete pouring is pumped to the concrete pouring area through a pipeline by a drag pump at the rear of the tunnel boring machine. A mechanical arm is installed at the bottom of the trailer in the concrete pouring area. The mechanical arm is provided with a pouring pipe connected to the concrete pumping pipe, and the mechanical arm is used to pour concrete at each position. In addition, the top of the rear supporting trailer group and the protective trailer group serves as a transportation channel for excavation construction materials (such as support materials), and a flatbed truck is equipped above the rear supporting trailer group and the protective trailer group to transport the materials at the tail of the rear supporting trailer group to the main engine area.

[0004] The above-mentioned synchronous invert lining construction equipment is integrated with the shield machine, which can save independent pouring platforms or trestle systems, reduce personnel input and equipment costs, and shorten the construction period. However, in the above scheme, the concrete pumping pipe is connected to the pouring pipe on the mechanical arm (the mechanical arm and the pouring pipe on the mechanical arm constitute a pouring structure), and the mechanical arm is fixed on the trailer. Usually, the mechanical arm can cover the concrete pouring operation within a certain range by swinging, but since the pouring operation and the tunneling operation of the tunnel boring machine are synchronously constructed, as the tunnel boring machine moves forward, the mechanical arm will also move forward, so the mechanical arm can only fill the concrete in a certain area before the trailer changes steps. Otherwise, once the mechanical arm moves forward with the trailer, it will not be able to cover the pouring of the rear area. Therefore, the length of the pouring range covered by the mechanical arm in the above scheme is relatively small, and before the concrete is poured, the template needs to be fixed on the bottom wall of the tunnel, which causes the construction personnel to frequently install and disassemble the template, affecting the construction efficiency. Including the case where there are embedded parts in the concrete, there are also requirements for the length of the embedded parts, which cannot be too long. Since the embedded parts in the front and rear casting areas also need to be connected, this leads to an increase in the number of connection parts between the embedded parts, increases the construction steps, and affects the construction efficiency. Summary of the invention

[0005] The object of the present invention is to provide a synchronous invert arch casting equipment to solve the problem that in the prior art, a mechanical arm connected to a concrete pumping pipe is fixed on a trailer and moves forward with the step-by-step movement of the trailer, resulting in a relatively small length of the casting range covered by the mechanical arm, which in turn requires construction personnel to frequently install and disassemble formwork, affecting construction efficiency; the object of the present invention is also to provide a synchronous invert arch casting construction method to solve the above-mentioned problem; the object of the present invention is also to provide a tunneling machine to solve the above-mentioned problem.

[0006] To achieve the above purpose, the synchronous invert casting equipment of the present invention adopts the following technical scheme: A synchronous invert arch pouring equipment comprises a rear supporting trailer group, the rear supporting trailer group is provided with a concrete pumping pipe for pumping invert arch concrete, the front end of the concrete pumping pipe is connected with a grouting structure, the rear supporting trailer group is provided with a driving mechanism for driving the grouting structure to move forward and backward for pouring invert arch concrete, and the concrete pumping pipe comprises an extension recovery pipe which can be extended forward and recovered backward to adapt to the forward and backward movement of the grouting structure.

[0007] The beneficial effect of the above technical solution is that: the present invention belongs to the invention creation of changing the relationship between elements, and changes the action relationship between the grouting structure and the rear supporting trailer. The grouting structure is changed from being fixed relative to the trailer in the prior art to being movable forward and backward. For this reason, a driving mechanism for driving the grouting structure to move forward and backward for pouring the inverted arch concrete is provided on the rear supporting trailer group. On this basis, the concrete pumping pipe includes an extension recovery pipe that can be extended forward and recovered backward, so as to adapt to the forward and backward movement of the grouting structure. In this way, during construction, the grouting structure is not affected by the forward excavation of the tunnel boring machine within a certain range, that is, after the tunnel boring machine excavates forward, the grouting structure can move backward under the action of the driving mechanism, so as to fill the area with concrete. Therefore, the pouring range that can be covered by the present invention can be longer than that of the previous technology, thereby reducing the frequent installation and disassembly of the template and improving the construction efficiency.

[0008] The specific form of the concrete pumping pipe is further defined, including an extension and recovery pipe that can be extended forward and recovered backward. Furthermore, the extended recovery pipe includes multiple sections of rigid pipes which are hinged and connected in sequence end to end, and there is a hinged connecting part between two adjacent rigid pipes. The rear matching trailer group is provided with tracks extending forward and backward, and the rigid pipe end at the rearmost end and the hinged connecting parts at even-numbered positions among all the hinged connecting parts from back to front are all coordinated with the track guide.

[0009] Furthermore, the grouting structure is a grouting pipe that can swing at least left and right, and a mobile platform that can move forward and backward and for personnel to stand on to assist the grouting pipe in grouting operations is installed on the rear supporting trailer group, and the mobile platform is located below the corresponding rear supporting trailer.

[0010] Furthermore, the rear trailer group is provided with a flushing pipe for connecting to a water tank, and the mobile platform is provided with a control mechanism capable of independently controlling the forward and backward movements of the mobile platform, so that personnel can stand on the mobile platform to operate the flushing pipe to flush the debris in the pouring area before pouring the invert concrete. The rear trailer group is also provided with a sewage pipe for pumping the sewage generated by the flushing into a sewage collection tank or to the outside of the tunnel.

[0011] Furthermore, the trailer in the rear supporting trailer group that is arranged with an extension recovery pipe is an inverted arch casting trailer, which includes a portal frame and side platforms located on the left and right sides of the portal frame, the extension recovery pipe is arranged on the side platform on one side, and a lifting device for lifting support materials is installed on the top of the portal frame.

[0012] Furthermore, an anti-falling platform is provided below the middle of the portal frame to prevent the supporting materials from falling under the invert casting trailer.

[0013] Furthermore, the rear supporting trailer group also includes a closed trailer connected to the rear of the arch casting trailer, the closed trailer has a driving platform for material transport vehicles transporting support materials to enter and exit, and the height of the driving platform is sufficient to ensure a distance from the top surface of the arch maintenance area.

[0014] Furthermore, a spray system for spraying water to the invert arch maintenance area is provided on the traveling platform.

[0015] Furthermore, the rear supporting trailer group is also provided with a smoothing mechanism, which includes a scraper for smoothing the poured inverted arch concrete and a mounting frame connected to the scraper and movably mounted on the rear supporting trailer group along the front-rear direction.

[0016] Furthermore, a lifting device is provided on the mounting frame, and the scraper is connected to the lifting device to adjust the up and down position of the scraper.

[0017] Furthermore, the lengths of the rigid tubes are equal.

[0018] Furthermore, the synchronous invert arch casting equipment also includes a towing platform connected to the rear of the rear supporting trailer group, a concrete pump is arranged on the towing platform, and the concrete pumping pipe includes a fixed pipe section with a fixed length connected between the concrete pump and the extension recovery pipe.

[0019] Furthermore, the width of the towing platform is sufficient for the concrete tank truck to meet the material transport truck used to transport support materials. A rotating platform is provided on the towing platform for the material transport truck and the concrete tank truck to turn around, and the rotating platform is located behind the concrete pump.

[0020] To achieve the above object, the synchronous invert casting construction method of the present invention adopts the following technical scheme: A synchronous invert pouring construction method, when pouring invert concrete in the area to be poured, an extension recovery pipe that can be extended forward and recovered backward is used to pump concrete, and at the same time, a grouting structure is controlled to move forward and backward for grouting, so that the grouting structure is not affected by the forward excavation of a tunnel boring machine within a certain range and can cover a longer pouring range.

[0021] The beneficial effect of the above technical solution is that the present invention is a pioneering invention, which performs grouting by controlling the forward and backward movement of the grouting structure, and adopts an extension recovery pipe that can extend forward and retract backward to pump concrete to adapt to the forward and backward movement of the grouting structure. In this way, during construction, the grouting structure is not affected by the forward excavation of the tunnel boring machine within a certain range, that is, after the tunnel boring machine excavates forward, the grouting structure can be controlled to move backward, so as to fill the area with concrete. Therefore, the pouring range that can be covered by the present invention can be longer than that of the previous technology, thereby reducing the frequent installation and disassembly of the formwork and improving construction efficiency.

[0022] Furthermore, before pouring the invert concrete, the slag in the pouring area is firstly flushed using a flushing pipe, and the sewage generated by the flushing is pumped out into a sewage collection tank or out of the tunnel using a sewage pipe.

[0023] To achieve the above purpose, the tunnel boring machine in the present invention adopts the following technical solutions: A tunnel boring machine comprises a main machine and synchronous invert arch casting equipment, wherein the synchronous invert arch casting equipment comprises a rear supporting trailer group, the rear supporting trailer group is provided with a concrete pumping pipe for pumping invert arch concrete, the front end of the concrete pumping pipe is connected with a grouting structure, the rear supporting trailer group is provided with a driving mechanism for driving the grouting structure to move forward and backward for invert arch concrete casting, and the concrete pumping pipe comprises an extension recovery pipe which can be extended forward and recovered backward to adapt to the forward and backward movement of the grouting structure.

[0024] The beneficial effect of the above technical solution is that: the present invention belongs to an improved invention creation, further limiting the specific form of the synchronous inverted arch casting equipment, wherein the grouting structure is changed from being fixed relative to the trailer in the prior art to being movable forward and backward, and for this purpose, a driving mechanism for driving the grouting structure to move forward and backward for inverted arch concrete casting is arranged on the rear supporting trailer group, and on this basis, the concrete pumping pipe includes an extension recovery pipe that can be extended forward and recovered backward, so as to adapt to the forward and backward movement of the grouting structure. In this way, during construction, the grouting structure is not affected by the forward excavation of the tunnel boring machine within a certain range, that is, after the tunnel boring machine excavates forward, the grouting structure can move backward under the action of the driving mechanism, so as to fill the area with concrete, so that the casting range that can be covered by the present invention can be longer than that of the previous technology, thereby reducing the frequent installation and disassembly of the template and improving the construction efficiency.

[0025] The specific form of the concrete pumping pipe is further defined, including an extension and recovery pipe that can be extended forward and recovered backward. Furthermore, the extended recovery pipe includes multiple sections of rigid pipes which are hinged and connected in sequence end to end, and there is a hinged connecting part between two adjacent rigid pipes. The rear matching trailer group is provided with tracks extending forward and backward, and the rigid pipe end at the rearmost end and the hinged connecting parts at even-numbered positions among all the hinged connecting parts from back to front are all coordinated with the track guide.

[0026] Furthermore, the grouting structure is a grouting pipe that can swing at least left and right, and a mobile platform that can move forward and backward and for personnel to stand on to assist the grouting pipe in grouting operations is installed on the rear supporting trailer group, and the mobile platform is located below the corresponding rear supporting trailer.

[0027] Furthermore, the rear trailer group is provided with a flushing pipe for connecting to a water tank, and the mobile platform is provided with a control mechanism capable of independently controlling the forward and backward movements of the mobile platform, so that personnel can stand on the mobile platform to operate the flushing pipe to flush the debris in the pouring area before pouring the invert concrete. The rear trailer group is also provided with a sewage pipe for pumping the sewage generated by the flushing into a sewage collection tank or to the outside of the tunnel.

[0028] Furthermore, the trailer in the rear supporting trailer group that is arranged with an extension recovery pipe is an inverted arch casting trailer, which includes a portal frame and side platforms located on the left and right sides of the portal frame, the extension recovery pipe is arranged on the side platform on one side, and a lifting device for lifting support materials is installed on the top of the portal frame.

[0029] Furthermore, an anti-falling platform is provided below the middle of the portal frame to prevent the supporting materials from falling under the invert casting trailer.

[0030] Furthermore, the rear supporting trailer group also includes a closed trailer connected to the rear of the arch casting trailer, the closed trailer has a driving platform for material transport vehicles transporting support materials to enter and exit, and the height of the driving platform is sufficient to ensure a distance from the top surface of the arch maintenance area.

[0031] Furthermore, a spray system for spraying water to the invert arch maintenance area is provided on the traveling platform.

[0032] Furthermore, the rear supporting trailer group is also provided with a smoothing mechanism, which includes a scraper for smoothing the poured inverted arch concrete and a mounting frame connected to the scraper and movably mounted on the rear supporting trailer group along the front-rear direction.

[0033] Furthermore, a lifting device is provided on the mounting frame, and the scraper is connected to the lifting device to adjust the up and down position of the scraper.

[0034] Furthermore, the lengths of the rigid tubes are equal.

[0035] Furthermore, the synchronous invert arch casting equipment also includes a towing platform connected to the rear of the rear supporting trailer group, a concrete pump is arranged on the towing platform, and the concrete pumping pipe includes a fixed pipe section with a fixed length connected between the concrete pump and the extension recovery pipe.

[0036] Furthermore, the width of the towing platform is sufficient for the concrete tank truck to meet the material transport truck used to transport support materials. A rotating platform is provided on the towing platform for the material transport truck and the concrete tank truck to turn around, and the rotating platform is located behind the concrete pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of an embodiment of a tunnel boring machine of the present invention; Figure 2 for Figure 1 AA section view in the figure; Figure 3 for Figure 1 An enlarged view of the middle telescopic pipe section; Figure 4 for Figure 1 BB section view in the figure; Figure 5 for Figure 1 CC section view in the figure; Figure 6 for Figure 1 DD section view in; Figure 7 for Figure 1 EE section view in.

[0038] In the figure: 1. Main machine; 2. Inverted arch casting trailer; 201. Door frame; 202. Side platform; 203. Guide rail; 204. Track; 3. Mobile platform; 301. Platform body; 302. Platform driving mechanism; 4. Telescopic pipe section; 401. Rigid pipe; 402. Grouting pipe; 403. Pipeline driving mechanism; 5. Concrete pump; 6. Smoothing mechanism; 601. Mounting frame; 602. Scraper; 603. Lifting device; 604. Water pump Flat drive mechanism; 7. Enclosed trailer; 701. Trailer body; 702. Driving platform; 703. Spraying system; 8. Rotating platform; 801. Platform body; 802. Rotating drive mechanism; 803. Traveling mechanism; 9. Concrete tanker; 10. Towing platform; 11. Anti-drop platform; 12. Invert cleaning area; 13. Invert casting area; 14. Invert maintenance area; 15. Formed invert; 16. Lifting device; 17. Material transport vehicle. DETAILED DESCRIPTION

[0039] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0040] In response to the technical problems existing in the prior art, the basic concept of the present invention is to enable the grouting structure to move forward and backward for grouting, and the concrete pumping pipe can adapt to its forward and backward movement, so that after the tunnel boring machine advances forward, the grouting structure can move backward to fill the corresponding area with concrete. Therefore, the pouring range covered by the grouting structure can be longer, thereby reducing the frequent installation and disassembly of the formwork and improving construction efficiency.

[0041] Embodiment 1 of the roadheader of the present invention: The tunnel boring machine in this embodiment is a shield machine. Figure 1As shown, the tunnel boring machine includes a main machine 1 and a synchronous invert casting device connected to the rear of the main machine 1, and the synchronous invert casting device includes a rear supporting trailer group, and the rear supporting trailer group is equipped with a concrete pumping pipe for pumping invert concrete, and the front end of the concrete pumping pipe is connected to a grouting structure, and the grouting structure is used as a terminal structure for injecting concrete into the area to be cast. The concrete pumping pipe includes an extension recovery pipe that can be extended forward and recovered backward, that is, a telescopic pipe section 4, and the trailer arranged with the telescopic pipe section 4 in the rear supporting trailer group is the invert casting trailer 2.

[0042] Specific as Figure 3 As shown, the telescopic pipe section 4 includes multiple sections of rigid pipes 401 that are hinged and connected in sequence from end to end, the length of each section of the rigid pipe 401 is equal, and there is a hinged connection part between two adjacent rigid pipes 401. The inverted arch casting trailer 2 is provided with a track 204 extending forward and backward, and the frontmost rigid pipe 401 end, the rearmost rigid pipe 401 end, and the hinged connection parts at even positions of all the hinged connection parts from back to front are guided and matched with the track 204. The inverted arch casting trailer 2 is provided with a pipeline driving mechanism 403 for driving the above-mentioned grouting structure to move forward and backward to cast the inverted arch concrete. The grouting structure is specifically a grouting pipe 402 connected to the frontmost rigid pipe 401 end and capable of swinging left and right to cover the grouting operation within a certain width range. When the pipeline driving mechanism 403 is working, it can drive the frontmost rigid tube 401 to move forward, so that each section of the rigid tube 401 extends forward, and of course, it can also drive the frontmost rigid tube 401 to move backward, so that each section of the rigid tube 401 is retracted backward ( Figure 3 The various sections of the rigid pipe in the extended state and the recovered state are shown at the same time), so that the grouting pipe 402 can cover the grouting operation within a certain length range.

[0043] like Figure 1 and Figure 2 As shown, a mobile platform 3 capable of moving forward and backward and for personnel to stand on to assist the grouting pipe 402 in grouting operation is installed on the inverted arch casting trailer 2. The mobile platform 3 is centrally arranged below the inverted arch casting trailer 2. The mobile platform 3 includes a U-shaped platform body 301. Two guide rails 203 extending forward and backward are arranged on the bottom surface of the inverted arch casting trailer 2. The tops of the left and right sides of the platform body 301 are respectively guided and matched with the corresponding guide rails 203. The mobile platform 3 is equipped with a control mechanism capable of independently controlling the forward and backward movement of the mobile platform 3, that is, a platform driving mechanism 302. When in use, the platform driving mechanism 302 and the pipeline driving mechanism 403 work synchronously, so that the mobile platform 3 and the grouting pipe 402 can be synchronously moved forward and backward. In this way, the construction personnel standing on the platform body 301 can hold the grouting pipe 402 by hand to control the position of its grouting, thereby ensuring the concrete pouring amount of the inverted arch casting area 13. At the same time, other construction personnel on the platform body 301 can use tools to stir the concrete to ensure the pouring quality of the concrete.

[0044] like Figure 1 and Figure 4 As shown, the inverted arch casting trailer 2 is also equipped with a smoothing mechanism 6, which is located at the rear side of the mobile platform 3 and arranged centrally below the inverted arch casting trailer 2. The smoothing mechanism 6 includes a scraper 602 for smoothing the cast inverted arch concrete and a mounting frame 601 connected to the scraper 602 and movably mounted on the inverted arch casting trailer 2 along the front-back direction. Specifically, the mounting frame 601 is also guided and matched with the guide rails 203, that is, the mounting frame 601 and the platform body 301 are mounted on the same set of guide rails 203, and the smoothing mechanism 6 also includes a horizontal driving mechanism 604 that independently controls the forward and backward movement of the mounting frame 601, so that the scraper 602 can be driven to move forward to achieve smoothing of the concrete. At the same time, a lifting device 603 is provided on the mounting frame 601, and the scraper 602 is connected to the lifting device 603, and the upper and lower positions of the scraper 602 can be adjusted to make the scraper 602 contact or leave the top surface of the inverted arch casting.

[0045] It should be noted that the pipeline drive mechanism 403, the platform drive mechanism 302, and the horizontal drive mechanism 604 can all be gear rack mechanisms, for example, a rack extending forward and backward is fixed on the guide rail 203 and the track 204, and each drive mechanism includes a motor and a gear installed at the output end of the motor, the gear is meshed with the rack, and the motor drives the gear to rotate when working, and the meshing action of the gear and the rack can drive the corresponding components to move forward and backward. Of course, in other embodiments, each drive mechanism can also be a screw nut mechanism.

[0046] The tunnel boring machine in this embodiment is a shield machine. The invert concrete is poured on the assembled segments. The tunnel environment is relatively clean, but inevitably a small amount of debris will fall on the bottom of the segments. In order to further ensure the pouring quality of concrete, before pouring concrete into the invert pouring area 13, the ground in the area needs to be cleaned. Figure 1 As shown, the predecessor of the inverted arch casting area 13 is the inverted arch cleaning area 12. Specifically, the rear supporting trailer group is equipped with a water tank and a sewage collection tank, and the rear supporting trailer group is also equipped with a flushing pipe connected to the water tank. During the cleaning operation, the platform driving mechanism 302 controls the platform body 301 to move forward and backward independently, and the construction personnel standing on the platform body 301 hold the flushing pipe to flush the debris in the inverted arch cleaning area 12. The rear supporting trailer group is also equipped with a sewage pipe for pumping the sewage generated by the flushing into the sewage collection tank, and the sewage pipe is connected to a sewage pump, so as to achieve the cleaning of the inverted arch cleaning area 12. Of course, the inverted arch cleaning area 12 is a closed area to prevent sewage from flowing forward. Specifically, before cleaning, the template can be directly fixed on the bottom wall of the tunnel to enclose the inverted arch cleaning area 12 and the subsequent inverted arch casting area 13.

[0047] like Figure 2 As shown, the inverted arch casting trailer 2 includes a portal frame 201 and side platforms 202 located on the left and right sides of the portal frame 201. A lifting device 16 for lifting supporting materials (such as pipe segments) is installed on the top of the portal frame 201, that is, a material channel for lifting supporting materials is formed in the portal frame 201. On this basis, in order to avoid the arrangement of the telescopic pipe section 4 affecting the lifting of supporting materials and the movement of the mobile platform 3, the telescopic pipe section 4 is arranged on the side platform 202 on one side. It should be noted that the side platform 202 is a first-layer platform of the inverted arch casting trailer 2, and the rear supporting belt conveyor for transporting slag can be arranged on the second-layer platform of the inverted arch casting trailer 2.

[0048] Furthermore, in order to prevent the supporting materials from accidentally falling during the lifting process and hitting the mobile platform 3 or the leveling mechanism 6, or hitting the concrete in the invert casting area 13, an anti-falling platform 11 is provided below the middle of the portal frame 201 to prevent the supporting materials from falling under the invert casting trailer 2. This isolates the material channel for lifting the supporting materials during normal excavation from the invert casting work area, ensuring that the excavation material lifting and the invert casting do not interfere with each other, thereby ensuring construction safety.

[0049] In fact, if Figure 1 As shown, there are two trailers in front of the arch casting trailer 2. The arch casting trailer 2 belongs to the third trailer from the front to the back, and the track of the lifting device 16 extends to the front end of the second trailer. That is, the supporting materials pass through the third trailer from the back to the front to the second trailer during the lifting process. The rear half of the second trailer is also provided with an anti-drop platform.

[0050] like Figure 1 and Figure 5 As shown, the rear of the invert casting area 13 is the invert curing area 14, and the rear supporting trailer group also includes a closed trailer 7 connected to the rear of the invert casting trailer 2, and the closed trailer 7 includes a trailer body 701, and a driving platform 702 for a material transport vehicle 17 that transports support materials to enter and exit is provided at the bottom of the trailer body 701. The height of the driving platform 702 satisfies that there is a gap between it and the top surface of the invert curing area 14, thereby providing a passage for the material transport vehicle 17 to avoid the vehicle directly rolling over the unsolidified concrete, providing solidification time for the solidification of the concrete, and the material transport vehicle 17 can directly drive to the rear of the invert casting trailer 2, shortening the material lifting distance.

[0051] Furthermore, a spray system 703 for spraying water to the invert curing area 14 is provided on the traveling platform 702, so as to realize automatic regular curing of the invert that has not been completely solidified. Preferably, the closed trailer 7 can be provided with more than two sections to fully ensure that the concrete is completely solidified, and the spray system 703 can also be provided on only one section of the closed trailer 7 or on more sections of the closed trailer 7 according to the length of the invert curing area 14.

[0052] like Figure 1 and Figure 6 As shown, the synchronous invert casting equipment also includes a towing platform 10 connected to the rear of the rear supporting trailer group so that the material transport vehicle 17 can be driven onto the closed trailer 7. The towing platform 10 has a walking mechanism and can move forward on the formed invert 15 following the rear supporting trailer group. At the same time, a concrete pump 5 is arranged on the towing platform 10, and the concrete pumping pipe also includes a fixed pipe section connected between the concrete pump 5 and the telescopic pipe section 4 and having a fixed length. In addition, the width of the towing platform 10 is sufficient to allow the concrete tank truck 9 and the material transport vehicle 17 to meet each other, ensuring that the transportation of the excavation material and the transportation of the invert casting material do not interfere with each other.

[0053] The dragging platform 10 is also provided with a rotating platform 8 for the material transport vehicle 17 and the concrete tanker 9 to turn around. The rotating platform 8 is located behind the concrete pump 5. Figure 7 As shown, the rotating platform 8 includes a platform body 801 and a rotating drive mechanism 802 for driving the platform body 801 to rotate. A walking mechanism 803 is provided at the bottom of the rotating platform 8. The walking mechanism 803 can also move forward on the forming arch 15, thereby increasing the supporting points between the forming arch 15 and the forming arch 15, thereby ensuring the supporting reliability of the material transport vehicle 17 and the concrete tanker 9.

[0054] The working process of the synchronous invert casting equipment in the present invention is as follows: During construction, the inverted arch pouring personnel stand on the mobile platform 3 that can move forward and backward, and clean the inverted arch cleaning area 12 with a handheld flushing pipe. The sewage is pumped into the sewage collection box through the sewage pipe and the sewage pump. After the cleaning is completed, the inverted arch concrete is poured through the grouting pipe 402, and the concrete is tampered with using tools. During the pouring process, the personnel stand on the mobile platform 3, and the auxiliary grouting pipe 402 moves forward and backward to perform the grouting operation, thereby covering the entire pouring range. Concrete is transported from outside the cave to the cave by a concrete tanker 9, and is transported to the inverted arch pouring area 13 via a concrete pump 5, a fixed pipe section, and a telescopic pipe section 4. After the pouring is completed, the smoothing mechanism 6 moves from the back to the front to achieve the flatness of the inverted arch surface. After the inverted arch is smoothed, it becomes the inverted arch maintenance area 14, and the inverted arch maintenance area 14 is subsequently maintained.

[0055] Since the grouting pipe 402 in the present invention can move forward and backward, and the telescopic pipe section 4 can be extended forward and retracted backward, it can adapt to the forward and backward movement of the grouting structure. Therefore, during construction, the grouting pipe 402 is not affected by the forward excavation of the tunnel boring machine within a certain range. That is, after the tunnel boring machine excavates forward, the grouting pipe 402 can move backward under the action of the pipeline driving mechanism, thereby filling the area with concrete. Therefore, the pouring range that can be covered by the present invention can be longer than that of the previous technology, thereby reducing the frequent installation and disassembly of the formwork and improving construction efficiency.

[0056] The present invention integrates synchronous invert arch pouring equipment on the shield machine, which can efficiently clean, pour, tamper, smooth and maintain the invert arch while the shield machine is excavating, and does not interfere with the normal excavation of the shield machine, so as to achieve one-time forming of the tunnel section, reduce the use of personnel, greatly improve the efficiency of construction, and reduce the cost of construction. In other embodiments of the tunnel boring machine: the rotating platform may not be set on the towing platform, and the vehicle can reverse out of the tunnel; the width of the towing platform can be enough for the material transport vehicle to pass through. At this time, in order to avoid affecting the passage of the material transport vehicle, the concrete pump can be arranged on the left or right side of the rear end of the closed trailer. Of course, the concrete tanker and the material transport vehicle need to travel at different times.

[0057] In other embodiments of the tunnel boring machine: when the concrete pump is arranged on a closed trailer, the towing platform can be omitted. In this case, a ramp needs to be provided at the rear end of the closed trailer so that the material transport vehicle can be driven onto the closed trailer.

[0058] In other embodiments of the tunnel boring machine: the lengths of each section of the rigid tube may be unequal, for example, all odd-numbered rigid tubes from back to front have the same length, all even-numbered rigid tubes have the same length, and the odd-numbered rigid tubes are longer than the even-numbered rigid tubes.

[0059] In other embodiments of the tunnel boring machine: a lifting device may not be provided on the mounting frame of the screed mechanism, and the up and down positions of the scraper cannot be adjusted.

[0060] In other embodiments of the roadheader: the trailer may not be equipped with a smoothing mechanism, and the smoothing operation may be performed manually with hand-held tools.

[0061] In other embodiments of the roadheader: a sprinkler system may not be provided on the travel platform, and water spraying maintenance operations may be performed manually with a hand-held water pipe.

[0062] In other embodiments of the tunnel boring machine: the rear supporting trailer group may not include a closed trailer with a traveling platform, but may be replaced by an ordinary portal frame trailer with an open bottom. In this case, the track of the lifting device extends to the ordinary portal frame trailer. When the material transport vehicle reaches the rear end of this vehicle, the supporting materials are unloaded and lifted forward by the lifting device. Since the material transport vehicle does not crush the unsolidified concrete at this time, it can also provide solidification time for the concrete.

[0063] In other embodiments of the tunnel boring machine: the anti-drop platform may no longer be provided on the portal frame of the invert casting trailer. In this case, the hoisting device needs to be inspected and maintained in time to ensure safe and reliable hoisting.

[0064] In other embodiments of the tunnel boring machine: if the tunnel diameter permits, the support materials can be transferred on the top of the trailer, for example, a flatbed truck is arranged on the top surface of the trailer, and a gantry hanger is arranged on the top surfaces of the front and rear ends of the rear supporting trailer group. When the material transport vehicle arrives at the rear end of the rear supporting trailer group, the gantry hanger is used to lift the support materials onto the top surface of the trailer group, and then the flatbed truck is used to transfer them forward, and finally the gantry hanger is used to lift the support materials to the ground. In this case, the extension recovery pipe can be arranged in the portal frame of the arch casting trailer without being set on the left or right side platform.

[0065] In other embodiments of the tunnel boring machine: the sewage generated by flushing the invert cleaning area can be directly pumped out to the outside of the tunnel.

[0066] In other embodiments of the tunnel boring machine: the rear-end trailer group may not be equipped with flushing pipes and sewage pipes. In this case, the bottom of the pipe segment can be cleaned manually, that is, the mobile platform is no longer used for cleaning the invert arch, but is only used to assist the grouting pipe in grouting operations. Therefore, the mobile platform only needs to move synchronously with the grouting pipe. Therefore, the mobile platform can share a set of driving mechanisms with the grouting pipe. In addition, for the TBM tunnel boring machine, since the bottom of the tunnel is not supported, at this time, an excavator can be used to clean the bottom, and then the slag cleaning belt conveyor can be used to transfer it to the rear-end belt conveyor as in the prior art.

[0067] In other embodiments of the tunnel boring machine: even if flushing pipes and sewage pipes are used to clean the debris, personnel do not have to stand on the mobile platform, but on a trailer. At this time, the mobile platform also only needs to move synchronously with the grouting pipe and can share a set of driving mechanisms with the grouting pipe.

[0068] In other embodiments of the tunnel boring machine: the grouting pipe may also adopt a ball joint structure to achieve swinging at any angle.

[0069] In other embodiments of the tunnel boring machine: the grouting structure is not a simple grouting pipe, but can be a grouting robot arm as in the prior art. The grouting robot arm is provided with a casting pipe connected to the extension recovery pipe. At this time, the mounting seat of the grouting robot arm needs to be installed on the trailer so that it can be moved forward and backward, so that the driving mechanism can drive the mounting seat to move, and then the entire robot arm can move forward and backward. At the same time, since the grouting robot arm can realize automatic grouting without manual control, the mobile platform can be omitted when there is no need to move the platform to flush the debris.

[0070] In other embodiments of the tunnel boring machine: the extension and recovery pipe may not be a plurality of rigid pipe sections hingedly connected, but may adopt other methods with pipeline extension and recovery functions, such as a hose reel. The hose can be extended forward by unwinding the reel and cooperating with the action of the driving mechanism, and can be recovered backward by rewinding the reel and cooperating with the action of the driving mechanism.

[0071] The embodiment of the synchronous invert casting construction method of the present invention is: The synchronous invert casting construction method is the same as the working principle of the synchronous invert casting equipment in the above-mentioned tunnel boring machine embodiment, which mainly includes that when pouring the invert concrete to the area to be poured (i.e., the invert casting area), the extension recovery pipe (i.e., the telescopic pipe section) that can be extended forward and recovered backward is used to pump concrete, and at the same time, the grouting structure is controlled to move forward and backward for grouting, so that the grouting structure is not affected by the forward excavation of the tunnel boring machine within a certain range and can cover a longer casting range. Furthermore, before pouring the invert concrete, the slag in the area to be poured is firstly flushed with a flushing pipe, and the sewage generated by the flushing is pumped out to the sewage collection box or to the outside of the tunnel using a sewage pipe. Other construction method steps will not be repeated one by one.

[0072] Similar to the synchronous invert casting equipment, in other embodiments of the synchronous invert casting construction method, the flushing pipe and the sewage pipe can be omitted, and the bottom of the pipe segment can be cleaned manually, or for a TBM tunneling machine, an excavator and a slag cleaning belt conveyor can be used to clean the slag.

[0073] The embodiment of the synchronous invert casting equipment in the present invention is as follows: The specific structure of the synchronous invert casting equipment is the same as the synchronous invert casting equipment in any embodiment of the above-mentioned tunneling machine, and will not be repeated here.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A synchronous invert casting device, characterized in that: The utility model comprises a rear supporting trailer group, which is provided with a concrete pumping pipe for pumping inverted arch concrete, the front end of the concrete pumping pipe is connected with a grouting structure, the rear supporting trailer group is provided with a driving mechanism for driving the grouting structure to move forward and backward for pouring the inverted arch concrete, and the concrete pumping pipe comprises an extending and recovering pipe which can be extended forward and recovered backward to adapt to the forward and backward movement of the grouting structure.

2. The synchronous invert casting equipment according to claim 1, characterized in that: The extended recovery pipe includes multiple sections of rigid pipes which are hinged and connected in sequence end to end, and there is a hinged connecting part between two adjacent rigid pipes. The rear matching trailer group is provided with tracks extending forward and backward, and the rigid pipe end at the rearmost end and the hinged connecting parts at even-numbered positions among all the hinged connecting parts from back to front are all coordinated with the track guide.

3. The synchronous invert casting equipment according to claim 1 or 2, characterized in that: The grouting structure is a grouting pipe that can swing at least left and right. A mobile platform that can move forward and backward and for personnel to stand on to assist the grouting pipe in grouting operations is installed on the rear supporting trailer group. The mobile platform is located below the corresponding rear supporting trailer.

4. The synchronous invert casting equipment according to claim 3, characterized in that: The rear trailer group is equipped with a flushing pipe for connecting to a water tank, and the mobile platform is equipped with a control mechanism that can independently control the forward and backward movements of the mobile platform, so that before pouring the invert concrete, personnel can stand on the mobile platform to operate the flushing pipe to flush the debris in the pouring area. The rear trailer group is also equipped with a sewage pipe for pumping the sewage generated by the flushing into a sewage collection tank or to the outside of the tunnel.

5. The synchronous invert casting equipment according to claim 1 or 2, characterized in that: The trailer with the extension recovery pipe in the rear supporting trailer group is an inverted arch casting trailer. The inverted arch casting trailer includes a portal frame and side platforms located on the left and right sides of the portal frame. The extension recovery pipe is arranged on the side platform on one side, and a lifting device for lifting support materials is installed on the top of the portal frame.

6. The synchronous invert casting equipment according to claim 5, characterized in that: An anti-falling platform is arranged below the middle of the portal frame to prevent the supporting materials from falling under the invert casting trailer.

7. The synchronous invert casting equipment according to claim 5, characterized in that: The rear supporting trailer group also includes a closed trailer connected to the rear of the arch casting trailer. The closed trailer has a driving platform for material transport vehicles transporting support materials to enter and exit. The height of the driving platform is sufficient to ensure a distance from the top surface of the arch maintenance area.

8. The synchronous invert casting equipment according to claim 7, characterized in that: A spray system for spraying water to the invert arch maintenance area is arranged on the traveling platform.

9. The synchronous invert casting equipment according to claim 1 or 2, characterized in that: The rear supporting trailer group is also provided with a smoothing mechanism, which comprises a scraper for smoothing the poured inverted arch concrete and a mounting frame connected to the scraper and movably mounted on the rear supporting trailer group along the front-rear direction.

10. The synchronous invert casting equipment according to claim 9, characterized in that: A lifting device is arranged on the mounting frame, and the scraper is connected with the lifting device to adjust the up and down position of the scraper.

11. The synchronous invert casting equipment according to claim 2, characterized in that: The lengths of the rigid tubes are equal.

12. The synchronous invert casting equipment according to claim 1 or 2, characterized in that: The synchronous invert arch casting equipment also includes a towing platform connected to the rear of the rear supporting trailer group, a concrete pump is arranged on the towing platform, and the concrete pumping pipe includes a fixed pipe section with a fixed length connected between the concrete pump and the extension recovery pipe.

13. The synchronous invert casting equipment according to claim 12, characterized in that: The width of the towing platform is sufficient to allow the concrete tank truck to pass the material transport truck used to transport support materials. A rotating platform is provided on the towing platform for the material transport truck and the concrete tank truck to turn around, and the rotating platform is located behind the concrete pump.

14. A synchronous invert casting construction method, characterized in that: When pouring the invert concrete into the area to be poured, an extension recovery pipe that can extend forward and retract backward is used to pump concrete, and at the same time, the grouting structure is controlled to move forward and backward for grouting, so that the grouting structure is not affected by the forward excavation of the tunnel boring machine within a certain range and can cover a longer pouring range.

15. The synchronous invert casting construction method according to claim 14, characterized in that: Before pouring the invert concrete, the slag in the pouring area is firstly washed with a flushing pipe, and the sewage generated by the washing is pumped out to a sewage collection tank or to the outside of the tunnel using a sewage pipe.

16. A tunnel boring machine, comprising a main machine and a synchronous invert casting device, characterized in that: The synchronous invert arch casting equipment is the synchronous invert arch casting equipment described in any one of claims 1 to 13.

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