Needle beam type short side wall lining trolley for tunnel construction

Abstract

The utility model discloses a needle beam type short side wall lining trolley for tunnel construction, which comprises a trolley frame and two needle beams, the two needle beams are respectively arranged on two sides in a tunnel and extend along the axial direction of the tunnel, two ends of each needle beam are respectively supported by supporting legs, two ends of the trolley frame are respectively provided with a sliding sleeve frame, and the sliding sleeve frames are respectively provided with a sliding sleeve. The sliding sleeve frames at the two ends of the vehicle frame are arranged on the two needle beams in a sliding and sleeving mode respectively, the middle of the vehicle frame arches upwards, a penetrating space is formed below the vehicle frame, the sliding sleeve frames at the two ends of the vehicle frame are each provided with a low side wall formwork mechanism, and the needle beams are provided with driving mechanisms used for driving the vehicle frame to move. According to the needle beam type short side wall lining trolley for tunnel construction, the construction difficulty and cost are reduced, the construction efficiency is improved, and the moving and positioning stability is good.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction equipment, specifically to a needle beam type low sidewall lining trolley for tunnel construction. Background Technology

[0002] In the construction of large-scale water conveyance tunnels in China, large-diameter open-face TBMs and single / double-shield TBMs are mainly used for excavation, with drill-and-blast methods employed in some sections. When using open-face TBMs, the full-section lining of large-diameter tunnels mainly consists of three steps. First, the prefabricated invert arch used for the bottom arch lining is installed synchronously with the TBM excavation process, facilitating the laying of the TBM trolley and locomotive tracks. Second, after the TBM excavation, materials are supplied via the forward movement and locomotive transport, followed by the construction of the low sidewall concrete lining on the prefabricated invert arch. Third, the side and top arches are then lined synchronously. These three steps constitute the entire full-section concrete lining work for the large-diameter tunnel. Traditional construction methods often rely on manual labor and simple formwork, resulting in low construction efficiency and difficulty in ensuring consistent lining quality. With the development of tunnel construction technology, lining trolleys have gradually become widely used. However, existing ordinary lining trolleys have many inconveniences when constructing low sidewalls: First, lining trolleys are generally set on tracks at the bottom of the tunnel and move along the tracks. However, the track laying is affected by the shape of the tunnel bottom. On the one hand, frequent installation and dismantling are required, making construction difficult and inefficient in the limited tunnel space. It also affects the efficiency of simultaneous lining by the open-type TBM excavation and the steel formwork trolley at the top arch. On the other hand, the stability of the lining trolley's movement and positioning along the track is poor, which can easily lead to mispositioning of the formwork. Second, relying on laying dedicated tracks for forward movement and lining requires the separate purchase of tracks and additional labor and equipment costs. Third, lining trolleys generally occupy tunnel space and cannot pass through the middle. Lining work can only be carried out after the entire tunnel is completed, making it difficult to achieve simultaneous lining construction and seriously affecting the project progress and efficiency. Fourth, during the concrete pouring process, lining trolleys are prone to problems such as formwork displacement and deformation, leading to dimensional deviations and appearance defects in the low sidewalls. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a needle beam type low sidewall lining trolley for tunnel construction that reduces construction difficulty and cost, improves construction efficiency, and has good stability in movement and positioning.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A pin beam type low sidewall lining trolley for tunnel construction includes a frame and two pin beams. The two pin beams are respectively located on both sides of the tunnel and extend along the tunnel axis. The two ends of the pin beams are supported by outriggers. The two ends of the frame are respectively provided with sliding sleeves, which are slidably fitted onto the two pin beams. The middle of the frame is arched upward, and a passage space is formed below the frame. The sliding sleeves at both ends of the frame are provided with low sidewall template mechanisms. The pin beams are provided with drive mechanisms for moving the frame.

[0006] As a further improvement to the above technical solution:

[0007] The sliding sleeve is provided with at least the upper and lower parts of a traveling wheel. The traveling wheel of the upper part of the sliding sleeve travels along the upper surface of the needle beam, and the traveling wheel of the lower part of the sliding sleeve travels along the lower surface of the needle beam.

[0008] The needle beam is provided with multiple slide rails, which are parallel to the needle beam, and the traveling wheels are moved on the corresponding slide rails.

[0009] The low side wall formwork mechanism includes a low side wall formwork and a lifting assembly. The lifting assembly is mounted on a sliding sleeve, and the low side wall formwork is mounted on the lifting assembly.

[0010] The lifting assembly includes multiple parallel lifting telescopic components, the top of which is located on a sliding sleeve, and the bottom of which is connected to the low side wall template.

[0011] The top end of the lifting telescopic component is hinged to the sliding sleeve, and the bottom end is hinged to the low side wall template. At least one telescopic positioning component is provided between the lifting telescopic component and the sliding sleeve. The telescopic positioning component is detachably connected to the lifting telescopic component and / or the sliding sleeve.

[0012] The telescopic positioning component is a jack.

[0013] The lifting and telescopic component is a pneumatic cylinder, hydraulic cylinder, or electric cylinder.

[0014] The template for the short side wall is arc-shaped.

[0015] The drive mechanism includes a winch and a traction rope. The winch is mounted on the needle beam and connected to the vehicle frame via the traction rope.

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

[0017] First, the chassis moves along the needle beam via a sliding sleeve, relative to the track at the bottom of the tunnel. On the one hand, this eliminates the need for frequent installation and removal of the track at the bottom of the tunnel, reducing construction difficulty and improving efficiency. On the other hand, the movement and positioning are more stable, reducing the likelihood of mispositioning of the formwork. Second, it eliminates the need for a dedicated track at the bottom of the tunnel, reducing costs. Third, a passageway is formed beneath the chassis, between the chassis and the tunnel floor, allowing locomotives, TBM trolleys, and / or arch slab trolleys to pass through, enabling simultaneous lining construction and improving project progress and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the needle beam type low sidewall lining trolley used in tunnel construction according to this utility model.

[0019] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0020] Figure 3 This is a side view structural diagram of the needle beam type low sidewall lining trolley for tunnel construction of this utility model.

[0021] The labels in the diagram represent:

[0022] 1. Frame; 2. Needle beam; 21. Slide rail; 3. Outriggers; 4. Sliding sleeve; 41. Traveling wheels; 5. Low side wall formwork mechanism; 51. Low side wall formwork; 52. Lifting assembly; 521. Formwork lifting telescopic component; 522. Telescopic positioning component; 6. Passage space; 7. Tunnel; 8. Drive mechanism; 81. Winch; 82. Traction rope. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Figures 1 to 3 This invention illustrates an embodiment of a needle beam type low sidewall lining trolley for tunnel construction. The needle beam type low sidewall lining trolley for tunnel construction in this embodiment includes a frame 1 and two needle beams 2. The two needle beams 2 are respectively located on both sides of a tunnel 7 and extend along the axial direction of the tunnel 7. The two ends of the needle beams 2 are supported by support legs 3. The two ends of the frame 1 are respectively provided with sliding sleeves 4, which are slidably fitted onto the two needle beams 2. The middle part of the frame 1 is arched upward, and a passage space 6 is formed below the frame 1. The sliding sleeves 4 at both ends of the frame 1 are provided with low sidewall template mechanisms 5. The needle beams 2 are provided with drive mechanisms 8 for driving the frame 1 to move.

[0028] During the construction of the low sidewall of Tunnel 7, the drive mechanism 8 first drives the frame 1 to move along the needle beam 2 to the construction position via the sliding sleeve 4. Then, the low sidewall formwork mechanism 5 erects the formwork for the low sidewall, forming a low sidewall pouring space between the low sidewall formwork mechanism 5 and the bottom wall of Tunnel 7. Next, concrete is poured into the low sidewall pouring space. After the concrete is poured, after a certain curing time, the low sidewall formwork mechanism 5 shrinks and detaches from the concrete structure. Then, the drive mechanism 8 moves the frame 1 to the next construction section, and the above operation steps are repeated to complete the lining construction of the low sidewall of Tunnel 7.

[0029] The needle beam type low sidewall lining trolley used in this tunnel construction has the following advantages: First, the frame 1 moves along the needle beam 2 via the sliding sleeve 4, and moves relative to the track at the bottom of the tunnel 7. On the one hand, it eliminates the need for frequent installation and removal of the track at the bottom of the tunnel 7, reducing construction difficulty and improving construction efficiency. On the other hand, the movement and positioning are more stable, and it is less likely to cause the template to be mispositioned. Second, it eliminates the need to set up a dedicated track at the bottom of the tunnel 7, reducing costs. Third, a passage space 6 is formed below the frame 1, that is, a passage space 6 is formed between the frame 1 and the bottom wall of the tunnel 7, which allows locomotives, TBM trolleys and / or arch trolleys and other working equipment to pass through, enabling synchronous lining construction and improving project progress and efficiency.

[0030] Furthermore, such as Figure 2 As shown, in this embodiment, the sliding sleeve 4 is provided with at least two traveling wheels 41 at its upper and lower parts. The traveling wheels 41 at the upper part of the sliding sleeve 4 travel along the upper surface of the needle beam 2, and the traveling wheels 41 at the lower part of the sliding sleeve 4 travel along the lower surface of the needle beam 2. The sliding sleeve 4 contacts the needle beam 2 and travels along the needle beam 2 through the traveling wheels 41, resulting in smooth movement. Preferably, the cross-section of the needle beam 2 is square, and the internal space of the sliding sleeve 4 is also square, with the needle beam 2 passing through the internal space of the sliding sleeve 4. The frame 1 is slidably fitted onto the needle beam 2 through the sliding sleeve 4. Under the sliding cooperation of the sliding sleeve 4 and the needle beam 2, the left-right and up-down movement of the frame 1 is restricted, improving stability.

[0031] Furthermore, in this embodiment, the needle beam 2 is provided with multiple slide rails 21, which are parallel to the needle beam 2, and the traveling wheels 41 are movably mounted on the corresponding slide rails 21. The traveling wheels 41 move along the slide rails 21, and under the guidance of the slide rails 21, the movement is more stable.

[0032] Furthermore, such as Figure 1 and Figure 2 As shown, in this embodiment, the low sidewall formwork mechanism 5 includes a low sidewall formwork 51 and a lifting assembly 52. ​​The lifting assembly 52 is mounted on the sliding sleeve 4, and the low sidewall formwork 51 is mounted on the lifting assembly 52. ​​When the low sidewall is erected, the lifting assembly 52 drives the low sidewall formwork 51 to rise and fall, adjusting the low sidewall formwork 51 to the erected position, so that a low sidewall pouring space is formed between the low sidewall formwork 51 and the bottom wall of the tunnel 7. When demolding, the lifting assembly 52 drives the low sidewall formwork 51 to rise, so that the low sidewall formwork 51 is separated from the low sidewall concrete.

[0033] Furthermore, in this embodiment, the lifting assembly 52 includes a plurality of parallel lifting telescopic members 521, the top of the lifting telescopic member 521 is disposed on the sliding sleeve 4, and the bottom of the lifting telescopic member 521 is connected to the low side wall template 51.

[0034] Furthermore, in this embodiment, the top end of the lifting telescopic component 521 is hinged to the sliding sleeve 4, and the bottom end is hinged to the low side wall template 51. At least one telescopic positioning component 522 is provided between the lifting telescopic component 521 and the sliding sleeve 4, and the telescopic positioning component 522 is detachably connected to the lifting telescopic component 521 and / or the sliding sleeve 4. In this way, the lifting telescopic component 521 can both rise and fall and swing, thereby adjusting both the erection height and the erection angle of the low side wall template 51, meeting more erection requirements and improving adaptability. After the erection is completed, the position of the low side wall template 51 is locked by the length locking of the telescopic positioning component 522, resulting in good overall stability and reducing the likelihood of template displacement or deformation during concrete pouring, thus helping to avoid dimensional deviations and appearance defects in the low side wall. Of course, in other embodiments, the telescopic positioning component 522 may not be provided, and the top end of the lifting telescopic component 521 may be directly fixedly connected to the sliding sleeve 4.

[0035] Furthermore, in this embodiment, the telescopic positioning component 522 is a jack. Of course, in other embodiments, the telescopic positioning component 522 can also be other components with telescopic adjustment functions, such as a telescopic assembly consisting of a double-headed sleeve and a double screw.

[0036] Furthermore, in this embodiment, the lifting telescopic component 521 is a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0037] Furthermore, in this embodiment, the low side wall template 51 is arc-shaped.

[0038] Furthermore, such as Figure 2 As shown, in this embodiment, the drive mechanism 8 includes a winch 81 and a traction rope 82. The winch 81 is mounted on the needle beam 2 and connected to the frame 1 via the traction rope 82. The winch 81, connected to the frame 1 via the traction rope 82, drives the frame 1 to move. A winch 81 can be installed at one end of the needle beam 2, and a fixed pulley at the other end. The two ends of the traction rope 82 are connected to the two ends of the frame 1 respectively, and the traction rope 82 is wound around the fixed pulley and the winch 81. In this way, the winch 81 rotates forward, driving the frame 1 forward, and rotates in reverse, driving the frame 1 backward. Alternatively, a winch 81 can be installed at each end of the needle beam 2, with each winch 81 connected to the corresponding end of the frame 1 via the traction rope 82. In this way, one winch 81 drives the frame 1 forward, and the other winch 81 drives the frame 1 backward. Of course, other drive structures are also possible.

[0039] 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 needle beam low wall lining trolley for tunnel construction, characterized in that: The utility model provides a tunnel formwork system, which comprises a frame (1) and two needle beams (2), the two needle beams (2) are arranged on both sides of a tunnel (7) respectively and extend along the axial direction of the tunnel (7), both ends of the needle beam (2) are supported by a support leg (3) respectively, both ends of the frame (1) are provided with a sliding sleeve frame (4) respectively, the sliding sleeve frame (4) at both ends of the frame (1) is sleeved on the two needle beams (2) respectively, the middle part of the frame (1) is arched upward, a passing space (6) is formed below the frame (1), and a low side wall formwork mechanism (5) is arranged on the sliding sleeve frame (4) at both ends of the frame (1), and the needle beam (2) is provided with a driving mechanism (8) for driving the frame (1) to move.

2. The needle beam low wall lining trolley for tunnel construction of claim 1, characterized in that: The sliding sleeve frame (4) is provided with walking wheels (41) at least on the upper part and the lower part respectively, the walking wheels (41) on the upper part of the sliding sleeve frame (4) walk along the upper surface of the needle beam (2), and the walking wheels (41) on the lower part of the sliding sleeve frame (4) walk along the lower surface of the needle beam (2).

3. The needle beam low wall lining trolley for tunnel construction according to claim 2, characterized in that: The needle beam (2) is provided with a plurality of slide rails (21) parallel to the needle beam (2), and the walking wheels (41) are arranged on corresponding slide rails (21).

4. The needle beam low wall lining trolley for tunnel construction of claim 1, characterized in that: The low side wall formwork mechanism (5) comprises a low side wall formwork (51) and a lifting assembly (52), the lifting assembly (52) is arranged on the sliding sleeve frame (4), and the low side wall formwork (51) is arranged on the lifting assembly (52).

5. The needle beam low wall lining trolley for tunnel construction of claim 4, characterized in that: The lifting assembly (52) comprises a plurality of lifting and telescoping members (521) arranged in parallel, the top end of the lifting and telescoping member (521) is arranged on the sliding sleeve frame (4), and the bottom end of the lifting and telescoping member (521) is connected with the low side wall formwork (51).

6. The needle beam low wall lining trolley for tunnel construction of claim 5, characterized in that: The top end of the lifting and telescoping member (521) is hinged to the sliding sleeve frame (4), the bottom end is hinged to the low side wall formwork (51), at least one lifting and telescoping member (521) is provided with a telescopic positioning member (522) between the sliding sleeve frame (4), and the telescopic positioning member (522) is detachably connected with the lifting and telescoping member (521) and / or the sliding sleeve frame (4).

7. The needle beam low wall lining trolley for tunnel construction of claim 6, characterized in that: The telescopic positioning member (522) is a jack.

8. The needle beam low wall lining trolley for tunnel construction of claim 5, characterized in that: The lifting and telescoping member (521) is a gas cylinder, an oil cylinder or an electric cylinder.

9. The needle beam low wall lining trolley for tunnel construction of claim 4, characterized in that: The low side wall formwork (51) is in an arc shape.

10. The needle beam low wall lining trolley for tunnel construction of any one of claims 1 to 9, characterized in that: The driving mechanism (8) comprises a winch (81) and a traction rope (82), the winch (81) is arranged on the needle beam (2) and connected with the frame (1) through the traction rope (82).

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