Three-dimensional space continuous segment logistics path system and method for small-diameter shield construction

Abstract

The application discloses a three-dimensional space continuous segment logistics path system and method for small-diameter shield construction, and realizes the continuous space transition of the electric vehicle transportation path from the tunnel center reference line to the single-side transportation reference line of the trolley through the construction of a space track transition subsystem and a space broken line hoisting subsystem, and realizes the synchronous conversion of horizontal deviation and vertical lifting through the track curve coupling of the sleeper elevation change in the transition process; meanwhile, the single-beam hoisting system is used to construct a Z-shaped space broken line hoisting path comprising a lateral material taking section, a horizontal centering section and a vertical climbing compensation section, so that the segments are continuously transported from the single-side transportation position to the working area of the tunnel center assembling machine. The application realizes the space continuous connection of the transportation system and the assembling system in the limited tunnel section, avoids the setting of independent transfer equipment, and improves the overall continuity and space adaptation capacity of the system.

Description

Technical Field

[0001] This invention relates to the field of shield tunnel construction equipment technology, and in particular to an integrated system and method for segment transportation and assembly spatial path suitable for small-diameter shield tunnel construction conditions. Background Technology

[0002] In small-diameter shield tunneling, due to the limited space in the tunnel cross section, the equipment on the rear-mounted trolley can only be arranged on one side, resulting in a spatial misalignment between the traditional battery-powered vehicle transportation system based on the tunnel centerline and the central working position of the assembly machine.

[0003] Existing technologies typically employ partial track rerouting or the installation of intermediate hoisting equipment, but these methods suffer from problems such as transportation interruptions, large space occupation, and high system complexity, making it difficult to meet the continuous construction needs of small-diameter shield tunnels.

[0004] Among existing related patent technologies, such as the patent document (CN205709512U) which discloses a hoisting device and a tunneling machine, the track design of this patent (first horizontal section, transition connecting section, second horizontal section) is essentially a longitudinally variable elevation track system. The specification clearly states that "the segment transport vehicle can park below the first horizontal section, and the segment assembly machine can park below the second horizontal section." In small-diameter shield tunnels, the rear-mounted trolley can only be equipped on one side, causing the battery-powered vehicle (segment transport vehicle) to travel along the tunnel sidewall; while the assembly machine usually needs to work in the center or close to the tunnel centerline. This results in serious lateral (in-horizontal) spatial misalignment. This patent does not disclose a lateral translation mechanism or planar curve bending design for the track in the horizontal plane. If this patent is applied directly, the second horizontal section cannot be aligned with the center working position of the assembly machine in the lateral direction, causing the lifting device to be unable to accurately place the segments into the grabbing area of ​​the assembly machine, and the system cannot close the loop. To ensure smooth segment hoisting and avoid pendulum motion, claim 2 and the specification of this patent explicitly define the transition connection section as a smooth transition design of "outer arc segment + inclined line segment + inner arc segment" with "tangential connection". Due to the strict limitations on the total length of the rear-mounted trolley for small-diameter shield tunnels, the available longitudinal space on one side is extremely limited. This smooth, tangential transition design requires a relatively long longitudinal distance. In the compact space on one side, there is often insufficient length to lay such a long transition track. Forcibly shortening the transition section to adapt to space constraints would result in a steeper inclined line. When the main hoisting mechanism travels on the inclined line, it is not only prone to slippage (although driven by a rack and pinion, the large inclination angle places extremely high demands on braking), but the swing amplitude of the segment would also increase dramatically in the floating state, causing serious safety hazards. The main hoisting mechanism and drive system of this patent are very complex, including the first / second traveling trolley, hydraulic balance cylinder, slewing bearing, slewing motor, and the bottom rack and pinion meshing drive mechanism. The massive track system deployed on one side, along with the lifting of segments weighing over 9 tons, leads to severe off-center loading on the rear-mounted trolley, affecting the traction of the trolley's wheels and the overall stability of the machine. While the patented lifting device can rotate via a slewing bearing, the position of the entire main lifting mechanism on the track is fixed (it can only move longitudinally along the track). In actual construction, deviations are inevitable due to the segment transport vehicle's parking position, track laying errors, and the fine-tuning position of the assembly machine. Because this patent lacks a lateral (perpendicular to the track direction) fine-tuning or floating mechanism, when there is a lateral deviation between the transport vehicle on one side and the central assembly machine, the assembly machine itself must "pull" the segment, which not only increases the load on the assembly machine but also easily causes damage to the segments' edges and corners, reducing construction quality.

[0005] Therefore, it is necessary to propose a spatial logistics system that enables continuous connection between transportation and assembly paths within a limited cross-section. Summary of the Invention

[0006] The purpose of this invention is to provide a three-dimensional continuous spatial logistics path system and method for small-diameter shield tunneling, which enables the battery-powered vehicle transport track and hoisting system to form a continuous spatial path within the confined tunnel cross section, thereby achieving uninterrupted delivery of tunnel segments from the transport side line to the assembly center.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A three-dimensional spatial continuous logistics path system for small-diameter shield tunneling includes: a spatial track transition subsystem, a single-sided continuous transportation subsystem, and a spatial polygonal hoisting subsystem. The spatial track transition subsystem includes a curved transition track structure and a sleeper elevation gradient structure. During the track transition process, it simultaneously realizes horizontal offset and vertical elevation adjustment, so that the battery car transportation path forms a continuous spatial transition trajectory, which is used to realize the spatial transformation of the battery car transportation track from the tunnel center transportation baseline to the trolley single-sided transportation baseline. The single-sided continuous transport subsystem is set in the single-sided area of ​​the trolley and shares the sleeper foundation with the trolley structure, forming a single-sided transport benchmark higher than the tunnel centerline, which is used for continuous transport of tunnel segments by battery-powered vehicles. The spatial zigzag hoisting subsystem is used to realize the spatial transformation of tunnel segments from a single-sided transportation position to the central working area of ​​the assembly machine. It includes a lateral material picking path, a horizontal centering path, and a vertical height compensation path. The lateral material picking path, the horizontal centering path, and the vertical height compensation path constitute a continuous spatial zigzag hoisting path, which is used to adapt to the space occupied by the sleepers and the height constraints of the assembly machine's segment picking.

[0008] Furthermore, the track transition process achieves a continuous spatial transition through the coupling of gradual changes in sleeper elevation with the curved track.

[0009] Furthermore, the single-sided transport track of the single-sided continuous transport subsystem is arranged on one side of the trolley and shares the same sleeper foundation with the trolley structure.

[0010] Furthermore, the spatial zigzag hoisting path has a Z-shaped structure, which is used to adapt to the space occupied by the sleepers and the height constraints of the assembly machine picking up the pieces.

[0011] Furthermore, the track transition endpoint and the hoisting starting point form a continuous connection node in space.

[0012] A three-dimensional spatial continuous segment logistics path method for small-diameter shield tunneling, based on the aforementioned three-dimensional spatial continuous logistics path system, includes the following steps: Step S1: Gradually transition the electric vehicle transport route from the center transport baseline of the tunnel to the transport baseline on one side of the trolley. Step S2: During the transition process, by coupling the sleeper elevation change with the curved track structure, the transportation path can simultaneously complete horizontal offset and vertical elevation adjustment. Step S3: The segments are transported from the single-sided transport position to the central working area of ​​the assembly machine via a spatial zigzag hoisting path.

[0013] Further, in step S3, the tunnel segment is lifted from the single-sided transport track via the lifting point and enters the single-beam hoisting system along the lateral material picking section; subsequently, the tunnel segment moves along the horizontal centering turning section to the central area of ​​the tunnel and aligns with the center working baseline of the assembly machine; due to the existence of the sleeper interference zone and spatial height constraints, the tunnel segment is further adjusted in height along the vertical climbing compensation section to meet the clamping height requirements of the assembly machine; finally, the tunnel segment is transported to the assembly machine through the tunnel segment hoisting path, where the assembly machine completes the clamping and installation.

[0014] The beneficial effects of this invention are: 1. Achieve continuous spatial connection between the transportation path and the assembly path under the condition of small-diameter shield tunneling; 2. Transform the traditional discontinuous transportation process into a continuous spatial path process; 3. Avoid setting up independent transfer and transportation equipment to reduce system complexity; 4. Improve the spatial adaptability of tunnel segment transportation and assembly processes; 5. Achieve coordinated spatial arrangement of multiple equipment within a confined tunnel cross-section. Attached Figure Description

[0015] Figure 1 This is a path diagram of the segment hoisting system of the present invention; Figure 2 This is a cross-sectional view of the tunnel. Detailed Implementation

[0016] The technical solutions of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0017] like Figure 1 Figure 2 As shown, the present invention provides a three-dimensional spatial continuous logistics path system, which is applied in the construction environment of small-diameter shield tunnels. A trolley 2 is set inside the tunnel cross section, and a single-sided equipment arrangement area 5 is arranged on one side of the trolley 2.

[0018] A central transport baseline 9 is set at the center of the tunnel, and a single-sided transport baseline 6 is set on one side of the area. The assembly machine 7 is arranged in the central working area of ​​the tunnel.

[0019] The electric vehicle 3 runs along the transport track in the rear supporting area and achieves spatial transition from the central transport baseline 9 to the single-sided transport baseline 6 through the track system.

[0020] The single-beam hoisting system 1 is located at the front of the trolley area and is used to transport the segments 4 from one side of the transport position to the working area of ​​the assembly machine 7.

[0021] The above arrangement enables the transportation system and the assembly system to form a spatially coordinated relationship within the confined tunnel cross-section.

[0022] The track transition system of the present invention includes a track transition section 8 and a sleeper 10.

[0023] The track transition section 8 is used to realize the spatial transition of the electric vehicle 3 from the central transport baseline 9 of the tunnel to the single-sided transport baseline 6.

[0024] During the transition, the elevation of sleeper 10 changes step by step, forming a sleeper elevation difference of 167mm, which causes the electric vehicle 3 to simultaneously turn horizontally and lift vertically during operation.

[0025] The running path of the electric vehicle 3 changes continuously within the track transition section 8, thereby achieving a smooth transition from the central track 9 to the single-sided track 6.

[0026] This structure allows the electric vehicle 3 to complete track space conversion without interruption during the transportation process.

[0027] The single-beam hoisting system 1 of the present invention includes a lateral material handling section, a horizontal centering and turning section, and a vertical climbing compensation section 11.

[0028] The segment 4 is lifted by the single-sided transport track 6 through the lifting point and enters the single beam hoisting system 1 along the lateral material picking section.

[0029] Subsequently, segment 4 moves along the horizontal centering turning section to the central area of ​​the tunnel and aligns with the center working baseline 12 of the assembly machine.

[0030] Due to the existence of the sleeper interference zone 13 and the spatial height constraint, the segment 4 is further adjusted in height along the vertical climbing compensation section 11 to meet the clamping height requirements of the assembly machine 7.

[0031] Finally, segment 4 is transported to the assembly machine 7 via the segment hoisting path, where it is clamped and installed.

[0032] The entire path forms a Z-shaped spatial hoisting structure, enabling continuous delivery of segment 4 from a single-sided transport position to the central assembly position.

[0033] The present invention provides a three-dimensional spatial continuous segment material flow path method for small-diameter shield tunneling, the steps of which include: Step S1: Gradually transition the electric vehicle transport route from the center transport baseline of the tunnel to the transport baseline on one side of the trolley. Step S2: During the transition process, by coupling the sleeper elevation change with the curved track structure, the transportation path can simultaneously complete horizontal offset and vertical elevation adjustment. Step S3: The segments are transported from the single-sided transport position to the central working area of ​​the assembly machine via a spatial zigzag hoisting path.

Claims

1. A three-dimensional continuous logistics path system for small-diameter shield tunneling, characterized in that: include: Space orbital transition subsystem, single-sided continuous transportation subsystem, space polygonal hoisting subsystem, The spatial track transition subsystem includes a curved transition track structure and a sleeper elevation gradient structure. During the track transition process, it simultaneously realizes horizontal offset and vertical elevation adjustment, so that the battery car transportation path forms a continuous spatial transition trajectory, which is used to realize the spatial transformation of the battery car transportation track from the tunnel center transportation baseline to the trolley single-sided transportation baseline. The single-sided continuous transport subsystem is set in the single-sided area of ​​the trolley and shares the sleeper foundation with the trolley structure, forming a single-sided transport benchmark higher than the tunnel centerline, which is used for continuous transport of tunnel segments by battery-powered vehicles. The spatial zigzag hoisting subsystem is used to realize the spatial transformation of tunnel segments from a single-sided transportation position to the central working area of ​​the assembly machine. It includes a lateral material picking path, a horizontal centering path, and a vertical height compensation path. The lateral material picking path, the horizontal centering path, and the vertical height compensation path constitute a continuous spatial zigzag hoisting path, which is used to adapt to the space occupied by the sleepers and the height constraints of the assembly machine's segment picking.

2. The three-dimensional continuous logistics path system for small-diameter shield tunneling as described in claim 1, characterized in that: The track transition process achieves a continuous spatial transition through the gradual change of sleeper elevation and coupling with the curved track.

3. The three-dimensional continuous logistics path system for small-diameter shield tunneling according to claim 1, characterized in that: The single-sided continuous transport subsystem has its single-sided transport track arranged on one side of the trolley and shares the same sleeper foundation with the trolley structure.

4. The three-dimensional continuous logistics path system for small-diameter shield tunneling as described in claim 1, characterized in that: The spatial zigzag hoisting path has a Z-shaped structure, which is used to adapt to the space occupied by the sleepers and the height constraints of the assembly machine picking up the pieces.

5. The three-dimensional continuous logistics path system for small-diameter shield tunneling according to claim 1, characterized in that: The track transition endpoint and the hoisting start point form a continuous connection node in space.

6. A method for a three-dimensional continuous segment logistics path in small-diameter shield tunneling, based on the three-dimensional continuous segment logistics path system according to any one of claims 1-5, characterized in that, The steps include: Step S1: Gradually transition the electric vehicle transport route from the center transport baseline of the tunnel to the transport baseline on one side of the trolley. Step S2: During the transition process, by coupling the sleeper elevation change with the curved track structure, the transportation path can simultaneously complete horizontal offset and vertical elevation adjustment. Step S3: The segments are transported from the single-sided transport position to the central working area of ​​the assembly machine via a spatial zigzag hoisting path.

7. The method according to claim 6, characterized in that: In step S3, the tunnel segment is lifted from the single-sided transport track via the lifting point and enters the single-beam hoisting system along the lateral material picking section; subsequently, the segment moves along the horizontal centering turning section to the central area of ​​the tunnel and aligns with the center working baseline of the assembly machine; due to the existence of the sleeper interference zone and spatial height constraints, the segment is further adjusted in height along the vertical climbing compensation section to meet the clamping height requirements of the assembly machine; finally, the segment is transported to the assembly machine through the segment hoisting path, where the assembly machine completes the clamping and installation.

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