Rapid duct piece transfer system and heading machine

Abstract

The invention discloses a rapid duct piece transfer system and a heading machine. The rapid duct piece transfer system is used for improving the duct piece transfer efficiency. The rapid duct piece transferring system comprises a duct piece crane and a duct piece unloading device, the duct piece unloading device is connected with a rail changing trolley, the rail changing trolley comprises a trolley rack with walking wheels at the bottom, and the trolley rack is provided with a trolley rail and a telescopic temporary rail used for extending the trolley rail. The trolley track and the temporary track are used for allowing the marshalling trolley to pass to an unloading track of the segment unloading device, and the segment unloading device is provided with a lifting frame assembly used for supporting segments on the marshalling trolley; the heading machine comprises a segment erector connected with a heading main machine, a rear matching trailer and a segment rapid transfer system, the front end of a segment crane is connected with the segment erector, and the rear end of the segment crane is connected with the rear matching trailer. The rail changing trolley, the duct piece unloading device and the duct piece crane are reasonably and effectively designed, rapid transfer of the duct pieces is achieved, and the duct piece transfer and assembly efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of shield segment transportation, and in particular to a segment rapid transportation system and a tunneling machine. Background Art

[0002] In recent years, shield construction has been completed with shield-type equipment that can complete one-time full-section tunnel excavation, support, and slag transportation, with the characteristics of safety, high efficiency, environmental protection, and high degree of automation. The materials used for tunnel support are prefabricated annular reinforced concrete segments with a certain width and thickness. The segments are transported into the tunnel by marshaling vehicles, and then the segment quick-unloading device unloads the segments from the marshaling vehicles. The segment crane then lifts the segments piece by piece onto the segment trolley, and the segment trolley is transported to the segment assembly machine for assembly.

[0003] However, the internal space of a small-diameter shield is limited. How to reasonably and effectively design the segment transfer system such as the segment quick-disassembly device, segment crane, and segment trolley greatly affects the efficiency of segment assembly. In the field of shield construction equipment, although the existing technology has made certain progress in the research of segment transfer systems, in small-diameter shield construction projects, the traditional segment transfer system cannot meet the needs of rapid segment transfer. Therefore, it is necessary to design a segment rapid transfer system suitable for small-diameter shields.

[0004] It should be particularly noted that the above technical information is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as admitting or implying in any form that the above technical information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a rapid segment transfer system and a tunnel boring machine to improve the transfer efficiency of the segments.

[0006] The technical solution of this application is: A rapid segment transfer system comprises a segment crane and a segment unloading device, wherein the segment unloading device is connected to a track-changing trolley, and the track-changing trolley comprises a trolley frame with running wheels at the bottom, the trolley frame is provided with a trolley track and a retractable temporary track for extending the trolley track, the trolley track and the temporary track are used for the marshaling car to pass to the unloading track of the segment unloading device, and the segment unloading device is provided with a lifting frame assembly for supporting the segments on the marshaling car.

[0007] This technical solution is not only applicable to the rapid transportation of pipe segments of small-diameter shields, but also to the rapid transportation of pipe segments of large-diameter shields. In particular, in the limited space inside a small-diameter shield, the track-changing trolley can enable the marshaling car that transports the pipe segments to move directly to the download track above the pipe segment unloading device through the temporary track and the trolley track, thereby reducing the distance of pipe segment transportation; the pipe segments transported on the marshaling car can be unloaded as a whole by designing the pipe segment unloading device; and the pipe segment crane can be designed to lift the pipe segments on the unloader to the assembly area of ​​the assembly machine. That is, this technical solution realizes the rapid transportation of pipe segments through the reasonable and effective design of the track-changing trolley, the pipe segment unloading device, and the pipe segment crane, greatly improving the efficiency of pipe segment transportation and assembly.

[0008] On the basis of the above technical solution, as the preferred technical solution of the segment rapid transfer system, there is an uphill and downhill transition structure between the tail of the trolley track and the head of the temporary track. This technical solution can ensure that the temporary track and its supporting structure on the track-changing trolley can be placed under the horizontal slope after the uphill slope, without affecting the passage of the marshaling car.

[0009] On the basis of the above technical solution, as the preferred technical solution of the segment rapid transfer system, the travel wheels are arranged on both sides of the trolley frame, the trolley track is arranged on the top of the trolley frame, and the temporary track is arranged at the bottom of the trolley frame. This technical solution is not only reasonable in layout and stable and reliable in force, but also simple and compact in structure, which facilitates the temporary track to be extended and stored under the trolley frame.

[0010] On the basis of the above technical solution, as the preferred technical solution of the segment rapid transfer system, the temporary track is connected to the trolley frame through a telescopic device or a hoisting device, and a pad, roller or pulley is provided at the bottom of the temporary track. This technical solution provides a variety of optional driving devices. If a telescopic device is used to drive the temporary track to extend and retract, the temporary track can be extended and retracted automatically, and the temporary track can be extended and retracted automatically with the help of a hoisting device. When the temporary track is driven by a hoisting device, the temporary track is in a fixed position and can only be extended relative to the trolley frame as the trolley frame moves forward. After the temporary track is fully extended, it can be pulled back to the bottom of the trolley frame by a hoisting device. The telescopic device can be a hydraulic cylinder, an electric cylinder or a pneumatic cylinder, etc., and the hoisting device can be a hydraulic winch or an electric winch, etc.

[0011] On the basis of the above technical scheme, as the preferred technical scheme of the segment rapid transfer system, the segment unloading device includes a chassis for setting the unloading track, the lifting frame assembly and the running wheel assembly, the lifting frame assembly includes two lifting assemblies symmetrically arranged about the unloading track, each lifting assembly includes a connecting rod 1, a connecting rod 2, and a telescopic device hinged to the chassis, the ends of the connecting rod 1 and the connecting rod 2 away from the chassis are hinged through the bracket, one end of the telescopic device is hinged at the hinge of the connecting rod 2 and the chassis, and the other end is hinged at the hinge of the connecting rod 1 and the bracket. When the telescopic device is extended, each lifting assembly can form a parallelogram frame with a gradually increasing height, which can lift the segment on the marshaling car as a whole and make it leave the marshaling car, and the telescopic device is located at the diagonal position of the parallelogram frame, as the common side of the two triangular structures; when the telescopic device is shortened, each lifting assembly can form a structure similar to a straight line, and the segment above it falls to the lowest position, which can effectively reduce the space occupied and does not affect the lifting action of the segment crane. The telescopic device can be an oil cylinder, an electric cylinder, a pneumatic cylinder or the like.

[0012] On the basis of the above technical solution, as a preferred technical solution for the segment rapid transfer system, the telescopic device is a lifting cylinder or a lifting electric cylinder, and the lifting frame assembly is arranged in several groups at intervals along the length direction of the unloading track.

[0013] On the basis of the above technical solution, as the preferred technical solution of the segment rapid transfer system, the segment unloading device is hingedly connected to the segment crane through a towing frame or towing slings, and the towing frame includes a front towing frame and a rear towing frame that are hingedly connected, the front towing frame is connected to the segment unloading device, and the rear towing frame is connected to the segment crane.

[0014] On the basis of the above technical solution, as the preferred technical solution of the pipe segment rapid transfer system, the pipe segment crane includes a crane frame and a pulley trolley, the chain transmission mechanism drives the pulley trolley to move along the length direction of the crane frame, and the pulley trolley is connected to the grabbing mechanism of the pipe segment through the pulley mechanism.

[0015] On the basis of the above technical solution, as the preferred technical solution of the pipe segment rapid transfer system, the chain transmission mechanism includes sprockets arranged at both ends of the crane frame and chains meshing with the sprockets in the crane frame, and the pulley trolley is connected between the two ends of the chain.

[0016] On the basis of the above technical solution, as the preferred technical solution of the pipe segment rapid transfer system, the pulley mechanism includes a plurality of fixed pulleys arranged on the pulley walking trolley, a plurality of movable pulleys arranged on the grabbing mechanism, and a steel wire rope is arranged in the walking range of the pulley walking trolley, which passes around each pulley in sequence, and at least one end of the steel wire rope is connected to a telescopic device or a winch device.

[0017] A tunnel boring machine comprises a segment assembler and a rear supporting trailer connected to the tunnel boring machine, and also comprises a segment rapid transfer system as described in any of the above technical solutions, wherein the front end of the segment crane is connected to the segment assembler and the rear end is connected to the rear supporting trailer.

[0018] Compared with the prior art, the rapid segment transfer system and tunnel boring machine provided in the present application have rationally and effectively designed the track-changing trolley, segment unloading device, and segment crane, thus realizing the rapid transfer of segments and greatly improving the efficiency of segment transfer and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the application status of the segment rapid transfer system; Figure 2 The state of unloading the segment for the segment rapid transfer system Figure 1 ; Figure 3 The state of unloading the segment for the segment rapid transfer system Figure 2 ; Figure 4 The side view (a) and top view (b) of the track-changing trolley; Figure 5 for Figure 4 Sectional view of AA surface and section view of BB surface; Figure 6 for Figure 5 Sectional view of CC surface and section view of DD surface; Figure 7 It is a schematic diagram of the state of the segment unloading device when lifting the segment; Figure 8 for Figure 7 Sectional views of the FF and EE surfaces; Fig. 9 It is a schematic diagram of the state of the segment unloading device when the segment is dropped; Fig.10 for Fig. 9 Sectional views of the JJ and KK planes; Fig.11 Figure 2 shows the side view (a) and top view (b) of the segment crane. Fig.12 for Fig.11 A partial enlarged view of the middle side view (a); Fig.13 for Fig.11 A partial enlarged view of the top view (b); Fig.14 for Fig.11 Sectional view of the middle GG plane; Fig.15 for Fig.11 Sectional view of the mid-HH plane; Fig.16 for Fig.11 Sectional view of plane II.

[0021] Description of Figure Numbers: 1-track-changing trolley, 2-marshaling car, 3-segment unloading device, 4-traction frame, 5-segment crane, 6-segment assembly machine, 7-trolley frame, 8-traveling wheel, 9-trolley track, 10-temporary track, 11-rubber wheel, 12-hydraulic winch, 13-temporary track frame, 14-temporary rail, 15-pad, 16-underframe, 17-traveling wheel assembly, 18-lifting frame assembly, 19-traction frame, 20-connecting rod 1, 21-connecting rod 2, 22-lifting cylinder, 23-bracket, 24-front traction frame, 25-rear towing frame, 26-crane frame, 27-pulley walking trolley, 28-grabbing mechanism, 29-sprocket, 30-pull rod one, 31-pull rod two, 32-motor reducer, 33-telescopic cylinder, 34-pull rod three, 35-fixed pulley one, 36-fixed pulley two, 37-fixed pulley three, 38-fixed pulley four, 39-fixed pulley five, 40-fixed pulley six, 41-movable pulley one, 42-fixed pulley seven, 43-movable pulley two, 44-fixed pulley seven, 45-unloading track, 46-rear supporting trailer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the core concept of the present invention and the following embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0024] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "several" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial" and the like indicate positions or positional relationships only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0025] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0026] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0027] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0028] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0029] One purpose of the present invention is to provide a segment rapid transfer system suitable for small-diameter shield machines, and to reasonably and effectively design segment transfer systems such as segment quick-disassembly devices, segment cranes, and segment trolleys, thereby greatly improving the efficiency of segment transfer and assembly.

[0030] In order to achieve the above-mentioned purpose, the core invention points of the rapid transfer system of the pipe segment of the present invention include the following three points: by designing a track-changing trolley, the pipe segments transported by the marshaling car can be moved to the pipe segment unloading device, thereby reducing the distance of pipe segment transfer; by designing a pipe segment unloading device, the pipe segments transported on the marshaling car can be unloaded as a whole; by designing a pipe segment crane, the pipe segments on the unloader can be lifted to the assembly area of ​​the assembly machine.

[0031] The present invention specifically has the following structure: a track-changing trolley, including a track-changing trolley frame, a temporary track, a hydraulic winch, and a running wheel. The main function is to provide a temporary track, connect the track in the tunnel with the track on the unloader, so that the marshaling car can travel on the unloader during tunnel excavation and be connected to the segment unloading device. The hydraulic winch is installed on the track-changing trolley, and one end of the retracting chain is connected to the temporary track. The temporary track is placed under the track-changing trolley. When the shield machine is excavating, the track-changing trolley moves forward with the shield machine, and the hydraulic winch releases the chain synchronously. The temporary track gradually retreats and is always connected with the track arranged in the tunnel. When the temporary track is extended to 9 meters, the hydraulic winch retracts the chain, driving the temporary track to retract under the track-changing trolley, and then the track in the tunnel is laid, so that the track on the track-changing trolley remains connected with the track in the tunnel.

[0032] The segment unloading device includes a chassis, a running wheel assembly, a lifting frame assembly, and a towing frame. Its main function is to unload the segments on the marshaling car. Its rear end is connected to the track-changing trolley, and is connected to the segment crane through the unloading device towing frame; the lifting frame assembly includes a lifting cylinder, connecting rod 1, connecting rod 2, bracket, etc. The lifting cylinder extends to drive the connecting rod 1, connecting rod 2, and bracket to lift, and then lift the segments on the marshaling car. The segment crane includes a segment crane frame, a pulley block, a running trolley, a drive unit, a hoisting device assembly, etc. Its main function is to lift the segments on the unloader and transport them to the assembly area of ​​the assembler; the front end is connected to the assembler, and the rear end is connected to the rear matching trolley; when the shield machine is excavating, the segment crane frame not only drags the rear matching trolley forward, but also drags the segment unloading device and the track-changing trolley forward.

[0033] Therefore, according to the present invention, by designing the track-changing trolley to always keep the track extending to the segment unloading device area, the marshaling car transporting the segment can reach the segment unloading device area through the track extended by the track-changing trolley, reducing the time of segment lifting; at the same time, the segment unloading device is designed to quickly unload the segment on the marshaling car, so that the marshaling car can quickly get out of the tunnel after unloading the segment, without affecting the next consignment of the segment; after the designed segment unloading device lifts the segment on the marshaling car, after the marshaling car exits, the oil cylinder of the lifting assembly of the segment unloading device retracts and drops with the segment, at this time, the designed segment unloading device and the segment on it can fall to a lower height, effectively increasing the lifting space of the segment crane; the designed segment crane can not only lift the segment to the assembly area of ​​the assembly machine, but also play the role of dragging the matching trolley, the segment quick-unloading device and the track-changing trolley. Therefore, the present invention can realize the rapid transportation of the segment and greatly improve the transportation and assembly efficiency of the segment.

[0034] The specific embodiments of the present invention are as follows: A segment rapid transfer system, such as Figures 1 to 6 As shown, it includes a segment crane 5 and a segment unloading device 3, and the segment unloading device 3 is connected to a track-changing trolley 1. When in use, tunnel tracks are laid in the assembled segments in the tunnel, and the marshaling car 2 in the tunnel can walk to the track-changing trolley 1 through the tunnel tracks laid in the tunnel, and then walk to the position of the segment unloading device 3 through the track-changing trolley 1, and the segment unloading device 3 unloads the segments on the marshaling car 2, and then the marshaling car 2 exits the tunnel after passing through the track-changing trolley 1, and at the same time, the segment crane 5 lifts the segments on the segment unloading device 3 to the segment assembling machine 6 for assembly.

[0035] The track-changing trolley 1 comprises a trolley frame 7 with running wheels 8 at the bottom, the trolley frame 7 is provided with a trolley track 9 and a retractable temporary track 10 for extending the trolley track 9, that is, the temporary track 10 can be retracted relative to the trolley frame 7, and the trolley track 9 and the temporary track 10 are used for the marshaling car 2 to pass to the unloading track 45 of the segment unloading device 3. The segment unloading device 3 is provided with a lifting frame assembly 18 for supporting the segments on the marshaling car 2. When the marshaling car 2 passes through the temporary track 10 and the trolley track 9 and travels to the unloading track 45, the lifting frame assembly 18 can unload the segments on the marshaling car 2, and the segment crane 5 lifts the unloaded segments to the segment assembling machine 6 for assembly.

[0036] This embodiment is not only suitable for the rapid transportation of pipe segments of small-diameter shields, but also for the rapid transportation of pipe segments of large-diameter shields. In particular, in the limited space inside a small-diameter shield, the track-changing trolley 1 can enable the marshaling car 2 for transporting pipe segments to directly move to the download track 45 above the pipe segment unloading device 3 through the temporary track 10 and the trolley track 9, thereby reducing the distance of pipe segment transportation; the pipe segments transported on the marshaling car are unloaded as a whole by designing the pipe segment unloading device; and the pipe segment crane is designed to lift the pipe segments on the unloader to the assembly area of ​​the assembly machine. That is, this embodiment realizes the rapid transportation of pipe segments by reasonably and effectively designing the track-changing trolley, the pipe segment unloading device, and the pipe segment crane, thereby greatly improving the efficiency of pipe segment transportation and assembly.

[0037] On the basis of the above embodiment, as a preferred embodiment of the segment rapid transfer system, the travel wheels 8 are arranged on both sides of the trolley frame 7, the trolley track 9 is arranged on the top of the trolley frame 7, and the temporary track 10 is arranged at the bottom of the trolley frame 7. This embodiment is not only reasonably arranged and stable and reliable in force, but also has a simple and compact structure, which facilitates the temporary track 10 to be extended and stored under the trolley frame 7. This embodiment can ensure that the temporary track 10 and its supporting structure on the track-changing trolley 1 can be placed under the horizontal slope section after going uphill, without affecting the passage of the marshaling car.

[0038] On the basis of the above embodiment, as a preferred embodiment of the segment rapid transfer system, the temporary track 10 is connected to the trolley frame 7 through a telescopic device or a hoisting device, and a pad 15 or a roller or a pulley is provided at the bottom of the temporary track 10. This embodiment provides a variety of optional driving devices. If the telescopic device is used to drive the temporary track 10 to extend and retract, the temporary track can be extended and retracted automatically, and the temporary track can also be extended and retracted automatically.

[0039] When the temporary track is driven by the winch device, the temporary track is in a fixed position and can only be extended relative to the trolley frame as the trolley frame 7 moves forward. After the temporary track is fully extended, it can be pulled back to the bottom of the trolley frame 7 by the winch device. The telescopic device can be a hydraulic cylinder, an electric cylinder, or a gas cylinder, etc., and the winch device can be a hydraulic winch, an electric winch, etc.

[0040] Based on the above embodiments, as a preferred embodiment of the segment rapid transportation system, Figures 7 to 10As shown, the segment unloading device 3 includes a base frame 16 for setting the unloading track 45, a lifting frame assembly 18 and a running wheel assembly 17. The lifting frame assembly 18 includes two lifting assemblies symmetrically arranged about the unloading track 45, each lifting assembly includes a connecting rod 1 20, a connecting rod 21, and a telescopic device hinged to the base frame 16, the ends of the connecting rod 1 20 and the connecting rod 21 away from the base frame 16 are hinged through a bracket 23, and one end of the telescopic device is hinged at the hinge of the connecting rod 21 and the base frame 16, and the other end is hinged at the hinge of the connecting rod 1 20 and the bracket 23.

[0041] When the telescopic device is extended, each lifting assembly can form a parallelogram frame with a gradually increasing height, which can lift the pipe segment on the marshaling car as a whole and make it leave the marshaling car, and the telescopic device is located at the diagonal position of the parallelogram frame, serving as the common side of the two triangular structures; when the telescopic device is shortened, each lifting assembly can form a structure similar to a straight line, and the pipe segment above it falls to the lowest position, which can effectively reduce the space occupied and does not affect the lifting action of the pipe segment crane. The telescopic device can be a type of oil cylinder, electric cylinder, or air cylinder.

[0042] On the basis of the above-mentioned embodiment, as a preferred embodiment of the segment rapid transfer system, the telescopic device is a lifting cylinder 22 or a lifting electric cylinder, and the lifting frame assembly 18 is arranged in several groups at intervals along the length direction of the unloading track 45.

[0043] On the basis of the above embodiments, as a preferred embodiment of the segment rapid transfer system, the segment unloading device 3 is hingedly connected to the segment crane 5 through a towing frame 19 or a towing sling, and the towing frame 19 includes a front towing frame 24 and a rear towing frame 25 that are hingedly connected, the front towing frame 24 is connected to the segment unloading device 3, and the rear towing frame 25 is connected to the segment crane 5.

[0044] Based on the above embodiments, as a preferred embodiment of the segment rapid transportation system, Figures 11 to 16 As shown, the segment crane 5 includes a crane frame 26 and a pulley trolley 27. The chain transmission mechanism drives the pulley trolley 27 to move along the length direction of the crane frame 26. The pulley trolley 27 is connected to the grabbing mechanism of the segment through the pulley mechanism.

[0045] On the basis of the above embodiments, as a preferred embodiment of the segment rapid transfer system, the chain transmission mechanism includes sprockets 29 arranged at both ends of the crane frame 26 and a chain meshing with the sprockets 29 in the crane frame 26, and a pulley trolley 27 is connected between the two ends of the chain.

[0046] On the basis of the above embodiments, as a preferred embodiment of the segment rapid transfer system, the pulley mechanism includes a plurality of fixed pulleys arranged on the pulley trolley 27 and a plurality of movable pulleys arranged on the grabbing mechanism, and a steel wire rope is arranged in the walking range of the pulley trolley 27 to pass around each pulley in sequence, and at least one end of the steel wire rope is connected to a telescopic device or a winch device.

[0047] As a preferred embodiment, the segment rapid transfer system is used in the limited space inside a small-diameter shield machine. The track-changing trolley, segment unloading device, and segment crane are reasonably and effectively designed to achieve rapid transfer of segments and improve the efficiency of segment transfer and assembly.

[0048] The main structure of the system is described as follows: The rear supporting trailer 46 is used to carry the supporting equipment of the shield machine; the marshaling car 2 is used to transport materials such as segments, box culverts, slurry, trailer rails, and pipelines during the shield construction process; the segment crane 5 is used to lift the segment blocks on the marshaling car to the assembly area of ​​the segment assembly machine; the track changing trolley 1 provides a temporary track to connect the track in the tunnel with the track on the segment unloading device; the hydraulic winch 12 expands and contracts the temporary track so that the track of the track changing trolley is always connected to the track in the tunnel during the shield excavation process; the segment unloading device 3 unloads the segments on the marshaling car from the marshaling car.

[0049] The specific technical solution and implementation process are as follows: like Figures 1 to 16 As shown, the track-changing trolley 1 is connected to the tail of the segment unloading device 3, and is composed of a trolley frame 7, running wheels 8, trolley tracks 9, and temporary tracks 10. The running wheels 8 are placed on both sides of the track-changing trolley 7. In order to reduce the damage to the segments caused by the running of the track-changing trolley 1, the running wheels 8 are designed with rubber wheels. The temporary track 10 is placed under the track-changing trolley 7 and connected to the chain of the hydraulic winch 12. When the shield machine is excavating, the hydraulic winch 12 releases the chain, and the temporary track 10 moves backward relative to the trolley frame 7 to keep the temporary track 10 connected with the track in the tunnel.

[0050] The temporary track 10 is composed of a temporary track frame 13, a temporary rail 14, and a pad 15. When the shield machine moves forward and the temporary track 10 extends, the marshaling car 2 passes through the track in the tunnel, the temporary rail 14, and the trolley track 9 and drives to the segment unloading device 3 area. The pad 15 designed on the temporary track 10 ensures that the temporary track 10 does not cause damage to the segment. The track on the track-changing trolley 1 adopts the design concept of uphill and downhill tracks to ensure that the temporary track 10 and the hydraulic winch 12 on the track-changing trolley 1 can be placed under the horizontal slope after the uphill slope, without affecting the passage of the marshaling car.

[0051] The segment unloading device 3 is composed of a base frame 16, a running wheel assembly 17, a lifting frame assembly 18, and a towing frame 19. The running wheel assembly 17 is arranged on both sides of the base frame 16. In order to ensure that the segment unloading device 3 can carry the amount of unloading a ring of segments, two rows of wheel pairs are arranged on both sides of the base frame 16; in order to reduce the damage to the segments caused by the movement of the track-changing trolley 1, the running wheels are designed in the form of rubber wheels. Three groups of lifting frame assemblies 18 are arranged on the segment unloading device 3 to ensure that the segment unloading device 3 can unload a ring of segments at the same time; each group of lifting frame assemblies 18 is composed of a connecting rod 1 20, a connecting rod 21, a lifting cylinder 22, and a bracket 23. The upper pad of the bracket 23 is designed with a slope surface to adapt to the arc surface of the lifting segment.

[0052] The fixed end of the lifting cylinder 22 is connected to the base frame 16, and the telescopic end is connected to the connecting rod 20 and the bracket 23; one end of the connecting rod 20 is connected to the base frame 16, and the other end is connected to the telescopic end of the cylinder 22 and the bracket 23; one end of the connecting rod 21 is connected to the base frame 16, and the other end is connected to the bracket 23; when the lifting cylinder 22 is extended, it drives the connecting rod 20, the connecting rod 21, and the bracket 23 to lift, and then drives the pipe segment to lift; after the lifting cylinder 22 is fully extended, it forms a triangular structure with the connecting rod 20, the connecting rod 21, and the bracket 23 to ensure that the lifted pipe segment is more stable.

[0053] When the segment is unloaded from the marshaling car 2, the marshaling car 2 moves backwards to the outside of the tunnel. When the marshaling car 2 leaves the area of ​​the segment unloading device 3, the jacking cylinder 22 retracts and the segment falls. The connection between the connecting rod 1 20, the connecting rod 21, the bracket 23, and the jacking cylinder 22 on the lifting frame assembly 18 is connected by hinges. The segment unloading device 3 moves on the tunnel wall. After the segment falls, it sticks to the segment unloading device 3. The height space occupied by the segment unloading device 3 is the smallest, which reduces the segment to the lowest level in the height direction, effectively increasing the lifting space of the segment crane.

[0054] The towing frame 4 is assembled by a front towing frame 24 and a rear towing frame 25. The front towing frame 24 is arched and connected to the segment unloading device 3; the front end of the rear towing frame 25 is connected to the rear end of the front towing frame 24 by a hinged manner, and the rear towing frame 25 is connected to the segment crane frame 26 to ensure that during the equipment excavation process, the segment crane 5 tows the rear towing frame 25, the rear towing frame 25 drives the front towing frame 24, and the front towing frame 24 drags the segment unloading device 3 to move; the front towing frame 24 and the rear towing frame 25 are connected by a hinged manner to ensure the ability of the segment unloading device to adapt to turns during the equipment excavation.

[0055] The front end of the segment crane 5 is hinged to the segment assembly machine 6, and the rear end of the segment crane 5 is hinged to the rear matching trolley; the segment crane 5 is composed of a segment crane frame 26, a pulley trolley 27, a grabbing mechanism 28, etc. Sprockets 29 are designed at both ends of the crane frame 26, and chains are engaged on the sprockets 29. The chain is designed in the crane frame 26, and a pulley trolley 27 is designed in the crane frame 26. One end of the chain is connected to the pull rod 1 30, and is connected to the pull rod 2 31 after passing the front and rear sprockets. Pull rod 1 and pull rod 2 are hinged to the pulley trolley 27. The drive unit drives the motor reducer to rotate, driving the sprocket to rotate, and then drives the pulley trolley in the crane frame to move forward and backward. A telescopic cylinder 33 is designed on the outside of the crane frame 26, and the telescopic end of the cylinder is connected to the pull rod 34, and two fixed pulleys are designed on the other side of the pull rod 34; one end of the wire rope is connected to the rear end of the crane frame 26, and passes through fixed pulley 1 35, fixed pulley 2 36, fixed pulley 3 37, fixed pulley 4 38, fixed pulley 5 39, fixed pulley 6 40, movable pulley 1 41, fixed pulley 7 42, movable pulley 2 43, fixed pulley 7 44 in sequence, and then the other end is fixed to the front end of the crane frame 26. The fixed pulley 1 35 and the fixed pulley 3 37 are installed in combination in the pulley walking trolley frame, and the fixed pulley 1 35 and the fixed pulley 3 37 are connected by the pull rod 3 34, and the pull rod 3 34 is installed at the other end of the pulley walking trolley frame. The telescopic cylinder 33 can drive the pulley walking trolley 27 to move forward and backward by telescoping; the fixed pulley 2 36 is installed obliquely to ensure that the wire rope can be wrapped around the fixed pulley 3 37 after passing through the fixed pulley 1 35 and the fixed pulley 2 36; the fixed pulley 4 38 is installed horizontally to ensure that the wire rope passing through the fixed pulley 3 37 and the fixed pulley 4 38 can be wrapped around the fixed pulley 5 39; the telescopic cylinder 33 pulls the wire rope, and then drives the grabbing mechanism 28 to lift through the wire rope, thereby driving the pipe segment to lift.

[0056] A tunnel boring machine includes a segment assembler 6 and a rear supporting trailer 46 connected to the tunnel boring machine, and also includes the segment rapid transfer system described in any of the above embodiments, wherein the front end of the segment crane 5 is connected to the segment assembler 6, and the rear end is connected to the rear supporting trailer 46. The use process is as follows: The locomotive head drives the slag car, mortar car, marshaling car 2, etc. in the direction of tunnel excavation. The segments transported on the marshaling car 2 pass through the track-changing trolley 1 to the segment unloading device 3 area. The jacking cylinder 22 of the segment unloading device 3 lifts the lifting assembly to unload the segments on the marshaling car 2, and the locomotive head drives the marshaling car out of the tunnel. When the marshaling car 2 leaves the segment unloading device 3 area, the jacking cylinder 22 of the segment unloading device 3 is retracted, driving the lifting assembly and the segments on it to fall, and then the segment crane 5 is activated to lift the segment segments on the segment unloading device 3 piece by piece to the assembly area of ​​the assembly machine 6. In this embodiment, the front end of the segment crane 5 is connected to the assembling machine 6, and the rear end is connected to the rear matching trolley. When the shield machine is excavating, the segment crane 5 frame drags the rear matching trailer forward; the front end of the track-changing trolley 1 is connected to the tail of the segment unloading device 3, and the segment unloading device 3 is connected to the segment crane 5 through the towing frame 4. When the shield machine is excavating, the segment unloading device 3 and the track-changing trolley 1 are driven forward by the segment crane 5; the track in the tunnel is a 9-meter track, and a new track needs to be spliced ​​every 9 meters. When the shield machine is excavating, the segment unloading device 3 and the track-changing trolley 1 are driven forward synchronously. In order to ensure that the track on the track-changing trolley 1 is connected to the track in the tunnel in real time, this embodiment is designed with a temporary track under the track-changing trolley 1. When the shield machine is excavating, the hydraulic winch releases the chain, and the temporary track extends backward. After extending 9 meters, the hydraulic winch 12 drives the temporary track to retract to the bottom of the track-changing trolley, and a new track is laid in the tunnel, and the new track continues to be connected with the track on the track-changing trolley.

[0057] The details not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0058] The above content shows and describes the basic principles, main features and beneficial effects of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A segment rapid transfer system, comprising a segment crane (5) and a segment unloading device (3), characterized in that: The segment unloading device (3) is connected to a track-changing trolley (1) at the rear end. The track-changing trolley (1) comprises a trolley frame (7) with running wheels (8) at the bottom. The trolley frame (7) is provided with a trolley track (9) and a retractable temporary track (10) for extending the trolley track (9). The trolley track (9) and the temporary track (10) are used for the marshaling car (2) to pass to the unloading track (45) of the segment unloading device (3). The segment unloading device (3) is provided with a lifting frame assembly (18) for supporting the segments on the marshaling car (2).

2. The segment rapid transfer system according to claim 1, characterized in that: The traveling wheels (8) are arranged on both sides of the trolley frame (7), the trolley track (9) is arranged on the top of the trolley frame (7), and the temporary track (10) is arranged on the bottom of the trolley frame (7).

3. The segment rapid transfer system according to claim 2, characterized in that: The temporary track (10) is connected to the trolley frame (7) via a telescopic device or a hoisting device, and a pad (15) or a roller or a pulley is provided at the bottom of the temporary track (10).

4. The segment rapid transportation system according to any one of claims 1 to 3, characterized in that: The segment unloading device (3) comprises a base frame (16) for setting the unloading track (45), a lifting frame assembly (18) and a running wheel assembly (17); the lifting frame assembly (18) comprises two lifting assemblies symmetrically arranged with respect to the unloading track (45); each lifting assembly comprises a connecting rod 1 (20), a connecting rod 2 (21) and a telescopic device hinged to the base frame (16); one end of the connecting rod 1 (20) and the connecting rod 2 (21) facing away from the base frame (16) is hinged via a bracket (23); one end of the telescopic device is hinged to a hinge between the connecting rod 2 (21) and the base frame (16), and the other end is hinged to a hinge between the connecting rod 1 (20) and the bracket (23).

5. The segment rapid transportation system according to claim 4, characterized in that: The telescopic device is a lifting oil cylinder (22) or a lifting electric cylinder, and a plurality of groups of the lifting frame assemblies (18) are arranged at intervals along the length direction of the unloading track (45).

6. The segment rapid transportation system according to any one of claims 1 to 3 and 5, characterized in that: The segment unloading device (3) is connected to the segment crane (5) via a towing frame (19) or a towing sling, wherein the towing frame (19) comprises a front towing frame (24) and a rear towing frame (25) which are hingedly connected, the front towing frame (24) is connected to the segment unloading device (3), and the rear towing frame (25) is connected to the segment crane (5).

7. The segment rapid transfer system according to claim 6, characterized in that: The segment crane (5) comprises a crane frame (26) and a pulley trolley (27); a chain transmission mechanism drives the pulley trolley (27) to move along the length direction of the crane frame (26); and the pulley trolley (27) is connected to a grabbing mechanism (28) for grabbing the segment through the pulley mechanism.

8. The segment rapid transportation system according to claim 7, characterized in that: The chain transmission mechanism comprises sprocket wheels (29) arranged at both ends of the crane frame (26) and a chain in the crane frame (26) meshing with the sprocket wheels (29), and a pulley trolley (27) is connected between the two ends of the chain.

9. The segment rapid transportation system according to claim 7 or 8, characterized in that: The pulley mechanism comprises a plurality of fixed pulleys arranged on a pulley trolley (27) and a plurality of movable pulleys arranged on a gripping mechanism (28). A steel wire rope is arranged in the travel range of the pulley trolley (27) and passes through each pulley in sequence. At least one end of the steel wire rope is connected to a telescopic device or a hoisting device.

10. A tunnel boring machine, comprising a segment assembling machine (6) connected to a tunnel boring machine and a rear supporting trailer (46), characterized in that: It also comprises the segment rapid transfer system according to any one of claims 1 to 9, wherein the front end of the segment crane (5) is connected to the segment assembly machine (6), and the rear end is connected to the rear supporting trailer (46).

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