A ramp trestle suitable for TBM construction tunnel

Abstract

The utility model discloses a kind of ramp trestle suitable for TBM construction tunnel, including first subsection and second subsection, first subsection rear end is hinged with second subsection front end, second subsection is equipped with walking mechanism and first swing driving part, the height of first subsection and second subsection gradually increases from front to back.Normal traffic, first subsection front end falls in tunnel bottom surface, second subsection rear end is close to the inverted arch precast block that has been installed, ramp first subsection and second subsection can eliminate the height difference between tunnel front end and the inverted arch precast block that has been installed, vehicle can smoothly pass through;When new inverted arch precast block needs to be installed to front, first swing driving part drives first subsection to swing upwards, avoid to hinder trestle walking, walking mechanism drives first subsection and second subsection whole body to move forward, finally first subsection swings downwards and falls in tunnel bottom surface, inverted arch precast block can be installed behind second subsection, second subsection will not hinder, installation efficiency is high, structure is reasonable.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, and in particular to a sloping trestle bridge suitable for TBM construction tunnels. Background Technology

[0002] TBM (Tunnel Boring Machine) tunneling technology represents a breakthrough in the field of tunnel engineering, and its development has promoted the feasibility of tunnel construction under conditions of great depth, long distance, and complex geological conditions. With the deep integration of intelligent and green technologies, TBM tunneling technology will further evolve towards high efficiency, adaptability, and sustainability, becoming a core support for tunnel construction.

[0003] While significant progress has been made in TBM tunneling technology, its supporting trestle technology is still in its early stages. Many key technologies are not yet mature, and existing trestle structures suitable for drill-and-blast tunneling are not suitable for TBM tunneling. The main reasons are: 1) Unlike drill-and-blast tunneling, the excavated soil from the front end of a TBM tunnel is directly transported to the rear end, where segment installation is immediately performed. To improve construction efficiency, some projects do not pour invert concrete on-site after segment installation, but instead immediately transport and install precast invert blocks. If a trestle for drill-and-blast tunneling is used, the invert precast blocks are located below the trestle, making construction very inconvenient and significantly reducing efficiency; 2) The front abutment of the trestle directly overlaps the installed segments, and the traveling mechanism also travels on the segments. However, the segments are arc-shaped, and the support structure and traveling mechanism of traditional trestle structures are suitable for relatively flat ground, making it difficult to adapt to the arc-shaped segments. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a sloping trestle bridge suitable for TBM construction tunnels that has a simple structure and facilitates the installation of precast inverted arch blocks.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A ramp bridge suitable for TBM construction tunnels includes a first segment and a second segment. The rear end of the first segment is hinged to the front end of the second segment. The second segment is provided with a traveling mechanism and a first swing drive for driving the first segment to swing up and down. The height of the first segment and the second segment gradually increases from front to back.

[0007] As a further improvement to the above technical solution: the walking mechanism includes a front walking mechanism located at the front end of the second segment, the front walking mechanism includes a front walking wheel set that can be raised, lowered and swung left and right, and the front walking wheel set is located on the left and right sides of the second segment.

[0008] As a further improvement to the above technical solution: the second segment is provided with a support leg, the support leg is provided with a lifting guide and a first lifting drive for driving the lifting guide to move up and down, the lifting guide is provided with a second swing drive for driving the front walking wheel set to swing left and right, and both the lifting guide and the second swing drive are hinged to the front walking wheel set.

[0009] As a further improvement to the above technical solution: both the first lifting drive and the second swing drive are telescopic structures. The upper end of the first lifting drive is connected to the upper end of the outrigger and the lower end is connected to the lifting guide. The upper end of the second swing drive is hinged to the lifting guide and the lower end is hinged to the front walking wheel assembly.

[0010] As a further improvement to the above technical solution: the walking mechanism further includes a rear walking mechanism located at the rear end of the second segment, the rear walking mechanism including a rear walking wheel set located in the middle of the left-right direction of the second segment, and the second segment is provided with a second lifting drive member for driving the rear walking wheel set to rise and fall.

[0011] As a further improvement to the above technical solution: both the bottom of the first segment and the second segment are provided with multiple supports, and the supports are provided with flexible anti-slip pads.

[0012] As a further improvement to the above technical solution: the inclined trestle bridge applicable to TBM construction tunnels also includes a lateral movement mechanism for driving the second segment to move left and right. The lateral movement mechanism includes a lateral movement base and a lateral movement drive component disposed on the lateral movement base. The second segment is provided with a lifting connector, and the lateral movement drive component is connected to the lifting connector.

[0013] As a further improvement to the above technical solution: the transverse drive component is located on the left and right sides of the transverse base, and the lifting connector is located on the left and right sides of the second segment, with the transverse drive component on the same side connected to the lifting connector.

[0014] As a further improvement to the above technical solution: the left and right sides of the second segment are provided with lifting guide sleeves, and the lifting connector is sleeved with the lifting guide sleeves.

[0015] As a further improvement to the above technical solution: the first swing drive member is a telescopic structure, with one end of the first swing drive member hinged to the first segment and the other end hinged to the second segment.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This utility model discloses a sloping trestle bridge suitable for TBM construction tunnels. During normal passage, the front end of the first segment rests on the tunnel floor, and the rear end of the second segment is close to the already installed invert arch precast block. The sloping first and second segments can eliminate the height difference between the tunnel front end and the already installed invert arch precast block, allowing vehicles or construction equipment to pass smoothly. When it is necessary to install a new invert arch precast block forward, the first swing drive component drives the first segment to swing upward, separating it from the tunnel floor to avoid obstructing the trestle bridge's movement. Then, the traveling mechanism drives the first and second segments forward as a whole until they reach the set position. Finally, the first segment swings downward and rests on the tunnel floor. At this point, the invert arch precast block can be installed behind the second segment without being affected by the second segment. This design offers high installation efficiency and a reasonable and effective structure.

[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention in the state of passing through a vehicle.

[0020] Figure 2 This is a front view structural diagram of the present invention in its walking state.

[0021] Figure 3 This is a front view structural diagram of the present invention in the position of travel.

[0022] Figure 4 This is a top view of the structure of this utility model.

[0023] Figure 5 yes Figure 1 AA view in the middle.

[0024] Figure 6 yes Figure 1 BB view in the middle.

[0025] Figure 7 yes Figure 1 The CC view in the middle.

[0026] Figure 8 yes Figure 1 DD view in the middle.

[0027] Figure 9 This is a schematic diagram of the forward traveling mechanism in this utility model, wherein (a) the forward traveling wheel assembly is in a vertical state, and (b) the forward traveling wheel assembly is in an inclined state.

[0028] Figure 10 This is a schematic diagram of the internal structure of the forward walking mechanism in this utility model.

[0029] Figure 11This is a structural schematic diagram of the support in this utility model, wherein (a) is a front view structural schematic diagram and (b) is a side view structural schematic diagram.

[0030] The labels in the diagram represent:

[0031] 1. First segment; 2. Second segment; 21. Walking mechanism; 211. Front walking wheel set; 212. Outrigger; 213. First lifting drive component; 214. Second swing drive component; 215. Rear walking wheel set; 216. Second lifting drive component; 217. Lifting guide component; 22. First swing drive component; 23. Lifting guide sleeve; 3. Support; 31. Flexible anti-slip mat; 4. Lateral movement mechanism; 41. Lateral movement base; 42. Lateral movement drive component; 43. Lifting connector; 5. Inverted arch precast block; 6. Segment. Detailed Implementation

[0032] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Figures 1 to 11This invention illustrates an embodiment of a ramp bridge for TBM construction tunnels. The ramp bridge, as described in this embodiment, includes a first segment 1 and a second segment 2. The rear end of the first segment 1 is hinged to the front end of the second segment 2. The second segment 2 is equipped with a traveling mechanism 21 and a first swing drive component 22 for driving the first segment 1 to swing up and down. The height of the first segment 1 and the second segment 2 gradually increases from front to back. Here, the front-back direction refers to the length direction of the tunnel, and the front direction is the tunnel excavation direction. Figures 1 to 4 The left side is the front, and the right side is the rear; the left and right directions are the width of the tunnel, or horizontal direction; the up and down directions are the height of the tunnel.

[0037] This embodiment describes a sloping trestle bridge suitable for TBM construction tunnels, specifically as follows: Figure 1 As shown, during normal passage, the front end of the first segment 1 rests on the tunnel floor (i.e., the tunnel segment 6 at the bottom of the tunnel), and the rear end of the second segment 2 is close to the already installed invert precast block 5. The sloping first segment 1 and second segment 2 can eliminate the height difference between the tunnel front end and the already installed invert precast block 5, allowing vehicles or construction equipment to pass smoothly; specifically as follows... Figure 2 As shown, when a new invert arch precast block 5 needs to be installed forward, the first swing drive 22 drives the first segment 1 to swing upward, separating it from the tunnel floor to avoid obstructing the movement of the trestle bridge. Then, the traveling mechanism 21 drives the first segment 1 and the second segment 2 to move forward as a whole until they reach the set position; specifically as follows... Figure 3 As shown, the first segment 1 swings downwards and falls to the bottom of the tunnel. At this time, the precast invert block 5 can be installed behind the second segment 2. This cycle is repeated without being affected by the second segment 2. The installation efficiency is high, and the structure is reasonable and effective.

[0038] See details Figure 6 , Figure 9 and Figure 10 In this embodiment, the walking mechanism 21 includes a front walking mechanism located at the front end of the second segment 2. The front walking mechanism includes a front walking wheel set 211 that can be raised, lowered, and swayed left and right. The front walking wheel set 211 is located on the left and right sides of the second segment 2. Since the invert arch precast block 5 has not yet been installed at the front end of the tunnel, the bottom surface is an arc-shaped structure. Front walking wheel sets 211 are set on both the left and right sides of the second segment 2, and the front walking wheel sets 211 can sway left and right to an inclined state, thereby better adapting to the arc shape of the tunnel bottom surface, providing reliable support for the second segment 2, and driving the trestle bridge to move forward smoothly. Of course, the front walking wheel set 211 can also sway to a vertical state to adapt to the working condition where the tunnel bottom surface is flat.

[0039] Furthermore, in this embodiment, the second segment 2 is provided with a support leg 212, the support leg 212 is provided with a lifting guide 217 (e.g., guide post, guide sleeve, etc.) and a first lifting drive 213 for driving the lifting guide 217 to lift up and down, the lifting guide 217 is provided with a second swing drive 214 for driving the front walking wheel set 211 to swing left and right, and both the lifting guide 217 and the second swing drive 214 are hinged to the front walking wheel set 211.

[0040] When the trestle needs to move forward, the first lifting drive component 213 drives the lifting guide component 217 and the front traveling wheel set 211 to descend as a whole. The outrigger 212 cooperates with the lifting guide component 217 to guide the movement (for example, both adopt a box structure with a rectangular cross-section) to prevent swaying and deviation, so that the front traveling wheel set 211 contacts the ground. The second swing drive component 214 then drives the front traveling wheel set 211 to swing to an inclined state to match the arc of the tunnel bottom. The first segment 1 then swings upward to detach from the tunnel bottom, thereby driving the second segment 2 and the first segment 1 to move forward. When the trestle needs to move left or right, the first lifting drive component 213 drives the lifting guide component 217 and the front traveling wheel set 211 to rise as a whole, detaching from the tunnel bottom, so as not to hinder the left and right movement of the second segment 2 and the first segment 1. The structure is reasonable and effective.

[0041] Preferably, both the first lifting drive component 213 and the second swing drive component 214 are telescopic structures (e.g., hydraulic cylinders, pneumatic cylinders, or electric push rods). The upper end of the first lifting drive component 213 is connected to the upper end of the outrigger 212, and the lower end is connected to the lifting guide component 217. The upper end of the second swing drive component 214 is hinged to the lifting guide component 217, and the lower end is hinged to the front travel wheel assembly 211. The front travel wheel assembly 211 can be driven to lift and swing left and right by the telescopic movement of the first lifting drive component 213 and the second swing drive component 214. The structure is simple and has good reliability.

[0042] See details Figure 4 and Figure 7In this embodiment, the walking mechanism 21 further includes a rear walking mechanism located at the rear end of the second segment 2. The rear walking mechanism includes a rear walking wheel set 215 located in the middle of the left-right direction of the second segment 2. The second segment 2 is provided with a second lifting drive component 216 (e.g., a hydraulic cylinder, pneumatic cylinder, or electric push rod) for driving the rear walking wheel set 215 to rise and fall. When the second segment 2 needs to move forward, the rear walking wheel set 215 located in the middle cooperates with the front walking wheel sets 211 located on the left and right sides to provide reliable support for the second segment 2, thereby driving the trestle to move forward smoothly. Compared with also setting the rear walking wheel set 215 on the left and right sides, it is beneficial to simplify the structure and reduce costs. The rear walking wheel set 215 can be a rubber wheel or a track. When using a track, it can improve the applicability of the trestle to the tunnel slope. When the second segment 2 needs to move left and right, the second lifting drive component 216 drives the rear walking wheel set 215 to rise and detach from the tunnel ground, avoiding hindering the left and right movement of the second segment 2. The structure is reasonable and effective.

[0043] See details Figure 11 In this embodiment, multiple supports 3 are provided at the bottom of both the first segment 1 and the second segment 2, and flexible anti-slip pads 31 are provided on the supports 3. Since most trestle bridges are made of steel, installing flexible anti-slip pads 31 on the supports 3 at the bottom of the first segment 1 and the second segment 2 can prevent the steel structure from directly contacting the tunnel segments 6 and causing damage. It also increases friction, which helps prevent the trestle bridge from slipping when vehicles or construction equipment pass over it, especially when there is a slope in the direction before and after the tunnel, further improving the safety and reliability of the trestle bridge.

[0044] See details Figure 4 and Figure 5 In this embodiment, the inclined trestle bridge suitable for TBM construction tunnels also includes a lateral movement mechanism 4 for driving the second segment 2 to move left and right. The lateral movement mechanism 4 includes a lateral movement base 41 and a lateral movement drive component 42 (e.g., a hydraulic cylinder, pneumatic cylinder, or electric push rod) mounted on the lateral movement base 41. The second segment 2 is provided with a lifting connector 43, and the lateral movement drive component 42 is connected to the lifting connector 43 (e.g., a lifting column, lifting rod, etc., which can achieve lifting and lowering through the lifting drive component). When the lateral movement drive component 42 extends or retracts left and right, the lifting connector 43 can drive the first segment 1 and the second segment 2 to move left and right, thereby adjusting the first segment 1 and the second segment 2 to a centered position. When the second segment 2 needs to move forward, the lifting connector 43 needs to drive the lateral movement drive component 42 and the lateral movement base 41 to rise and detach from the tunnel floor to avoid hindering the forward movement of the second segment 2. The structure is reasonable and effective.

[0045] In a preferred embodiment, the lateral movement drive 42 is located on the left and right sides of the lateral movement base 41, and the lifting connector 43 is located on the left and right sides of the second segment 2. The lateral movement drive 42 and the lifting connector 43 on the same side are connected, which has good symmetry and balance and can provide greater driving force to drive the second segment 2 to move left and right.

[0046] Furthermore, in this embodiment, lifting guide sleeves 23 are provided on the left and right sides of the second segment 2, and the lifting connector 43 is sleeved with the lifting guide sleeve 23. The lifting connector 43 cooperates with the lifting guide sleeve 23 to play a guiding role, avoiding shaking or displacement of the lifting connector 43 during the lifting process. The structure is simple and reliable. Preferably, both the lifting connector 43 and the lifting guide sleeve 23 are box-type structures, and the cross-section can be rectangular.

[0047] Furthermore, in this embodiment, the first swing drive 22 is a telescopic structure (e.g., a hydraulic cylinder, a pneumatic cylinder, or an electric push rod). One end of the first swing drive 22 is hinged to the first segment 1, and the other end is hinged to the second segment 2. By extending and retracting the first swing drive 22, the first segment 1 can be driven to swing up and down relative to the second segment 2, resulting in a simple and reliable structure.

[0048] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A sloping trestle bridge suitable for TBM construction tunnels, characterized in that: It includes a first segment (1) and a second segment (2). The rear end of the first segment (1) is hinged to the front end of the second segment (2). The second segment (2) is provided with a walking mechanism (21) and a first swing drive (22) for driving the first segment (1) to swing up and down. The height of the first segment (1) and the second segment (2) gradually increases from front to back.

2. The inclined trestle bridge suitable for TBM construction tunnels according to claim 1, characterized in that: The walking mechanism (21) includes a front walking mechanism located at the front end of the second segment (2). The front walking mechanism includes a front walking wheel set (211) that can be raised, lowered, and swung left and right. The front walking wheel set (211) is located on the left and right sides of the second segment (2).

3. The inclined trestle bridge suitable for TBM construction tunnels according to claim 2, characterized in that: The second segment (2) is provided with a support leg (212), the support leg (212) is provided with a lifting guide (217) and a first lifting drive (213) for driving the lifting guide (217) to rise and fall. The lifting guide (217) is provided with a second swing drive (214) for driving the front walking wheel set (211) to swing left and right. The lifting guide (217) and the second swing drive (214) are both hinged to the front walking wheel set (211).

4. The inclined trestle bridge suitable for TBM construction tunnels according to claim 3, characterized in that: Both the first lifting drive (213) and the second swing drive (214) are telescopic structures. The upper end of the first lifting drive (213) is connected to the upper end of the support leg (212), and the lower end is connected to the lifting guide (217). The upper end of the second swing drive (214) is hinged to the lifting guide (217), and the lower end is hinged to the front walking wheel assembly (211).

5. The inclined trestle bridge suitable for TBM construction tunnels according to claim 2, characterized in that: The walking mechanism (21) also includes a rear walking mechanism located at the rear end of the second segment (2). The rear walking mechanism includes a rear walking wheel assembly (215) located in the middle of the left-right direction of the second segment (2). The second segment (2) is provided with a second lifting drive member (216) for driving the rear walking wheel assembly (215) to rise and fall.

6. The inclined trestle bridge suitable for TBM construction tunnels according to claim 1, characterized in that: The bottom of the first segment (1) and the second segment (2) are provided with multiple supports (3), and the supports (3) are provided with flexible anti-slip pads (31).

7. The inclined trestle bridge suitable for TBM construction tunnels according to any one of claims 1 to 6, characterized in that: It also includes a transverse mechanism (4) for driving the second segment (2) to move left and right. The transverse mechanism (4) includes a transverse base (41) and a transverse drive (42) provided on the transverse base (41). The second segment (2) is provided with a lifting connector (43). The transverse drive (42) is connected to the lifting connector (43).

8. The inclined trestle bridge suitable for TBM construction tunnels according to claim 7, characterized in that: The transverse drive (42) is located on the left and right sides of the transverse base (41), and the lifting connector (43) is located on the left and right sides of the second segment (2). The transverse drive (42) on the same side is connected to the lifting connector (43).

9. The inclined trestle bridge suitable for TBM construction tunnels according to claim 7, characterized in that: The second segment (2) is provided with lifting guide sleeves (23) on the left and right sides, and the lifting connector (43) is sleeved with the lifting guide sleeves (23).

10. The inclined trestle bridge for TBM construction tunnels according to any one of claims 1 to 6, characterized in that: The first swing drive (22) is a telescopic structure. One end of the first swing drive (22) is hinged to the first segment (1), and the other end is hinged to the second segment (2).

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