A distribution trestle bridge that can be used for inverted arch concrete pouring

Abstract

The utility model discloses a cloth trestle bridge can be used to invert arch concrete pouring, including two parallelly arranged main girder, the installation support of main girder length direction arrangement, the concrete conveying mechanism of being equipped with on the installation support and be used for with the butt joint of concrete conveying mechanism cloth component, still include two parallel and along the door frame of interval arrangement of main girder length direction, two uprights of door frame are equipped on two main girder respectively, the both ends of installation support are respectively laterally movably equipped on the crossbeam of two door frame, and the cloth component is uniformly arranged on two main girders. The utility model discloses cloth trestle bridge can be used to invert arch concrete pouring can reduce the arrangement and maintenance cost, and the tunnel space that occupies is little.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, and in particular to a concrete placement trestle that can be used for pouring concrete for invert arches. Background Technology

[0002] During tunnel construction, with the increasing mechanization of tunnel construction, self-propelled invert arch trestle bridges have been widely used due to their high operational efficiency. Especially when used in conjunction with integrated invert arch formwork, the assembly and dismantling of formwork in traditional construction can be eliminated, significantly reducing the labor intensity of workers and further shortening the invert arch construction cycle. However, in practical applications, the concrete placement method for invert arch pouring has become a key factor restricting the large-scale adoption of this type of mechanized construction method.

[0003] Currently, the traditional method for placing concrete for the invert arch is to use concrete mixer trucks to move directly on the invert arch trestle and complete the placement operation (e.g., Figure 1 As shown in the figure, due to the large volume of concrete poured in a single operation during the construction of the invert arch, the concrete mixer trucks need to work continuously on the trestle for a long time. This results in the mixer trucks occupying the vehicle passage of the invert arch trestle for a long time. At the same time, due to the limited working space of the trestle, only one concrete mixer truck can be accommodated on the trestle for concrete placement at the same time, which affects the overall construction progress of the tunnel.

[0004] To address the shortcomings of traditional concrete placement methods, Chinese patent application CN111997652A discloses a trestle bridge suitable for concrete placement in tunnel invert and filling layers. This solution involves mounting supports on the main beams on both sides of the trestle bridge, and correspondingly installing a first concrete conveying mechanism and a second concrete conveying mechanism on each support. This allows for the pouring of concrete for the invert on both sides, avoiding the need for concrete mixer trucks to occupy the trestle bridge passage and impacting its operation. However, this solution requires independent mounting supports and two sets of concrete conveying mechanisms on both sides of the trestle bridge, resulting in high overall layout and maintenance costs and a large footprint in the tunnel. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a concrete placement trestle that can reduce the layout and maintenance costs and reduce the space occupied in the tunnel, and can be used for the pouring of inverted arch concrete.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A concrete placement trestle for pouring inverted arch concrete includes two parallel main beams, mounting brackets arranged along the length of the main beams, a concrete conveying mechanism mounted on the mounting brackets, and a concrete placement component for docking with the concrete conveying mechanism. It also includes two parallel and spaced-apart gantry frames arranged on the two main beams. The two vertical beams of the gantry frames are respectively mounted on the two main beams. The two ends of the mounting brackets are respectively movably mounted on the crossbeams of the two gantry frames. The concrete placement component is arranged on both main beams.

[0008] As a further improvement to the above technical solution:

[0009] The crossbeam is provided with a transverse guide rail, and the two ends of the mounting bracket are provided with traction trolleys. The upper part of the traction trolley is provided with a first traveling part that cooperates with the transverse guide rail, and the first traveling part is supported on the transverse guide rail.

[0010] Both sides of the mounting bracket are provided with first longitudinal guide rails along their length direction. Both sides of the lower part of the traction trolley are provided with rollers that roll in cooperation with the first longitudinal guide rails. The first longitudinal guide rails are supported on the rollers. At least one of the traction trolleys is provided with a drive mechanism for driving the rollers to rotate.

[0011] The first longitudinal guide rail is an I-shaped rail, and the upper flange of the first longitudinal guide rail is supported on the upper side of the roller, and the roller is located on the outer side of the first longitudinal guide rail;

[0012] Alternatively, the roller is located inside the first longitudinal guide rail.

[0013] The mounting bracket is provided with a chain along its length, and the two ends of the chain are fixed on the mounting bracket. The driving mechanism includes a rotary drive motor and a drive sprocket mounted on the traction trolley. The rotary drive motor is used to drive the drive sprocket to rotate around its own central axis. The traction trolley is provided with driven sprockets on both the front and rear sides of the drive sprocket. The chain is wound around the drive sprocket and each driven sprocket.

[0014] The main beam is provided with a fabric trolley that can move longitudinally. The main beam is provided with a second longitudinal guide rail along its length. The fabric trolley is provided with a second traveling part on both sides. The two second traveling parts are respectively arranged longitudinally on the two second longitudinal guide rails. The fabric components are arranged on both sides of the fabric trolley.

[0015] The concrete conveying mechanism includes a first belt conveyor and a second belt conveyor. The first belt conveyor has a first discharge port located above the second belt conveyor for conveying materials to the second belt conveyor. The second belt conveyor has a second discharge port that connects with the fabric distribution component.

[0016] The second belt conveyor is equipped with the second discharge port at both ends, and the second belt conveyor can convey materials in both forward and reverse directions.

[0017] The fabric component is a fabric trough or a fabric tube.

[0018] The fabric component is a retractable or rotatable structure.

[0019] Compared with existing technologies, the advantages of this utility model are as follows: The concrete placing trestle disclosed in this utility model, which can be used for pouring inverted arch concrete, arranges two parallel gantry frames spaced back-to-back on two main beams. The two ends of the mounting bracket are laterally movable and mounted on the crossbeams of the two gantry frames. This allows the lateral movement of the mounting bracket to synchronously drive the lateral movement of the concrete conveying mechanism mounted on the mounting bracket. Simultaneously, placing components are arranged on both main beams. Once the mounting bracket is in place at its predetermined position on both sides of the crossbeam, it can connect with the concrete conveying mechanism through the corresponding placing components. This technical solution allows for the completion of the inverted arch pouring operation on both sides of the tunnel with only one concrete conveying mechanism, significantly reducing the layout cost and subsequent maintenance cost of the concrete conveying mechanism, while also reducing the tunnel space occupied. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the traditional concrete placement method.

[0021] Figure 2 This is a side view of the structure of the present invention in the form of fabric.

[0022] Figure 3 This is a front view structural diagram of the present invention in the first fabric state.

[0023] Figure 4 This is a front view structural diagram of the present invention in the second fabric state.

[0024] Figure 5 This is a front view structural diagram of the present invention in the third fabric state.

[0025] Figure 6 This is a side view of the structure of the concrete placement trestle bridge that can be used for pouring concrete for inverted arches, based on this utility model.

[0026] Figure 7 yes Figure 6 A magnified structural diagram of part A in the middle.

[0027] Figure 8 This is a side view of the traction trolley located at the rear of the present invention and its mounting bracket.

[0028] Figure 9This is a side view of the front traction trolley and the mounting bracket of this utility model.

[0029] Figure 10 This is a front view schematic diagram of the traction trolley located at the rear of the present invention and its mounting bracket.

[0030] Figure 11 yes Figure 10 A magnified structural diagram of part B.

[0031] Figure 12 This is a front view structural diagram of the fabric cart.

[0032] Figure 13 This is a side view of the fabric cart.

[0033] Figure 14 This is a top-view structural diagram of the fabric cart.

[0034] The labels in the diagram represent: 1. Main beam; 11. Second longitudinal guide rail; 2. Gantry; 21. Vertical beam; 22. Crossbeam; 3. Mounting bracket; 31. Traction trolley; 311. First traveling section; 312. Roller; 32. First longitudinal guide rail; 4. Concrete conveying mechanism; 41. First belt conveyor; 411. First discharge port; 42. Second belt conveyor; 421. Second discharge port; 5. Concrete placing trolley; 51. Concrete placing component; 52. Second traveling section; 6. Drive mechanism; 61. Rotary drive motor; 62. Drive sprocket; 63. Driven sprocket; 7. Chain. Detailed Implementation

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

[0036] 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.

[0037] 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.

[0038] Figures 2 to 14 This invention illustrates an embodiment of a concrete placement trestle for invert concrete pouring. The trestle includes two parallel main beams 1, mounting brackets 3 arranged along the length of the main beams 1, a concrete conveying mechanism 4 mounted on the mounting brackets 3, and a concrete placement component 51 for docking with the concrete conveying mechanism 4. It also includes two parallel and spaced-ahead gantry frames 2 on the two main beams 1. Two vertical beams 21 of the gantry frames 2 are respectively mounted on the two main beams 1. The two ends of the mounting brackets 3 are laterally movable and mounted on the crossbeams 22 of the two gantry frames 2. The concrete placement component 51 is arranged on both main beams 1. It should be noted that the docking of the concrete conveying mechanism 4 with the concrete placement component 51 does not specifically refer to a physical connection between the two components. It means that through a reasonable arrangement, the concrete conveying mechanism 4 can convey materials to the concrete placement component 51, thereby enabling the concrete placement component 51 to perform normal placement operations. In this specification, "front" refers to the tunnel excavation direction, "front-back" refers to the longitudinal direction, and "lateral" refers to the tunnel width direction.

[0039] The concrete placing trestle bridge for invert concrete pouring in this embodiment is designed by arranging two parallel gantry frames 2 spaced apart on two main beams 1. The two ends of the mounting bracket 3 are laterally movable and mounted on the crossbeams 22 of the two gantry frames 2. This allows the lateral movement of the mounting bracket 3 to synchronously drive the lateral movement of the concrete conveying mechanism 4 mounted on it. Simultaneously, placing components 51 are arranged on both main beams 1. Once the mounting bracket 3 is in place at its predetermined position on both sides of the crossbeam 22, it can connect with the concrete conveying mechanism 4 via the corresponding placing component 51. This design allows for the completion of invert layer pouring operations on both sides of the tunnel with only one set of concrete conveying mechanism 4, significantly reducing the layout and subsequent maintenance costs of the concrete conveying mechanism 4, while also reducing the tunnel space occupied.

[0040] The method of using the concrete placement trestle for invert arch concrete pouring in this embodiment is as follows: After the main beam 1 is in place, the mounting bracket 3 is moved to the left side of the crossbeam 22 and positioned, and the concrete conveying mechanism 4 is connected to the placing component 51 located on the left side. After the concrete mixer truck is positioned on the left side of the tunnel, the discharge port of the concrete mixer truck is connected to the concrete conveying mechanism 4; then the concrete mixer truck discharges, and the material is conveyed through the concrete conveying mechanism 4 to the connected placing component 51 for the invert arch layer pouring operation on the left side of the tunnel; after the invert arch pouring operation on the left side is completed, the concrete mixer truck stops discharging and releases its connection with the concrete conveying mechanism 4, and the placing component 51 on the left side releases its connection with the concrete conveying mechanism 4; then the mounting bracket 3 is moved to the right side of the crossbeam 22 and positioned, and the same steps are followed to cooperate with the placing component 51 located on the right side for the invert arch layer pouring operation on the right side of the tunnel. Of course, in other embodiments, the invert arch layer pouring operation on the right side of the tunnel can be carried out first, and then the invert arch layer pouring operation on the left side of the tunnel can be carried out. It is easy to imagine that after the pouring of the invert layers on both sides of the tunnel is completed, the concrete placing trestle, which could have been used for pouring the invert concrete, can still be used for pouring the infill layer. It should be noted that in this instruction manual, the left and right directions refer to the width of the tunnel, i.e., the transverse direction mentioned earlier.

[0041] Further, see Figures 2 to 6 , Figures 8 to 10 In this embodiment, a transverse guide rail is provided on the crossbeam 22, and traction trolleys 31 are provided on both ends of the mounting bracket 3. The upper part of the traction trolley 31 is provided with a first traveling part 311 that cooperates with the transverse guide rail. The first traveling part 311 is supported on the transverse guide rail. Preferably, the first traveling part 311 includes traveling wheels and a drive motor for driving the traveling wheels. The transverse movement of the mounting bracket 3 by the two traction trolleys 31 helps to ensure the stability of the mounting bracket 3 during the transverse movement process.

[0042] Further, see Figures 2 to 6 , Figures 8 to 10 In this embodiment, the mounting bracket 3 has first longitudinal guide rails 32 on both sides along its length. The lower sides of the traction trolley 31 have rollers 312 that roll in cooperation with the first longitudinal guide rails 32 (in other embodiments, rollers can be used instead of rollers 312). The first longitudinal guide rails 32 are supported on the rollers 312. A drive mechanism 6 for driving the rollers 312 to rotate is provided on the traction trolley 31 near the rear end of the main beam 1. In other embodiments, the drive mechanism 6 can also be located on the traction trolley 31 near the front end of the main beam 1, or both traction trolleys 31 can have the drive mechanism 6. The drive mechanism 6 drives the rollers 312 to roll, thereby moving the mounting bracket 3 back and forth, adjusting the position of the concrete conveying mechanism 4, and thus changing the position of the concrete pouring in the longitudinal direction (i.e., the front-to-back direction), resulting in a wide pouring range.

[0043] Further, see Figure 2 , Figure 6 , Figure 8 and Figure 9 In this embodiment, the first longitudinal guide rail 32 is an I-shaped track. The upper flange of the first longitudinal guide rail 32 is supported on the upper side of the roller 312. The roller 312 is located on the inner side of the first longitudinal guide rail 32 (near the center of the tunnel). The inner side of the roller 312 has a flange with a diameter larger than the distance between the upper and lower flanges of the first longitudinal guide rail 32. This effectively prevents the roller 312 from detaching from the first longitudinal guide rail 32, which helps to ensure the stability and safety of the mounting bracket 3 during longitudinal movement. Of course, in other embodiments, the roller 312 is located on the outer side of the first longitudinal guide rail 32 (near the tunnel sidewall), and the flange on the outer side of the roller 312 can also prevent the roller 312 from detaching from the first longitudinal guide rail 32.

[0044] Further, see Figures 3 to 5 , Figure 10 and Figure 11 In this embodiment, the mounting bracket 3 has a chain 7 along its length, with both ends of the chain 7 fixed to the mounting bracket 3. The drive mechanism 6 includes a rotary drive motor 61 and a drive sprocket 62 mounted on the traction trolley 31. The rotary drive motor 61 drives the drive sprocket 62 to rotate around its own central axis. The traction trolley 31 has driven sprockets 63 on both the front and rear sides of the drive sprocket 62. The chain 7 is wound around the drive sprocket 62 and each driven sprocket 63. The rotary drive motor 61 drives the drive sprocket 62 to rotate, thereby driving the driven sprockets 63 on both the front and rear sides to rotate. Since the chain 7 is fixed, the drive sprocket 62 and the driven sprockets 63 will move along the length of the chain 7, thereby driving the traction trolley 31 to move back and forth.

[0045] Further, see Figures 2 to 7 , Figures 12 to 14 In this embodiment, a longitudinally movable concrete placing trolley 5 is provided on the main beam 1. A second longitudinal guide rail 11 is provided along the length of the main beam 1. Second traveling parts 52 are provided on both sides of the concrete placing trolley 5, and the two second traveling parts 52 are respectively longitudinally movable on the two second longitudinal guide rails 11. Concrete placing components 51 are arranged on both sides of the concrete placing trolley 5. When the mounting bracket 3 moves back and forth, driving the concrete conveying mechanism 4 to move back and forth, the concrete placing trolley 5 can also drive the concrete placing components 51 to move back and forth to facilitate docking with the concrete conveying mechanism 4 to adapt to the concrete pouring operation requirements at different longitudinal positions of the tunnel. Of course, in other embodiments, the concrete placing components 51 can also be directly placed on the main beam 1, but multiple components need to be spaced apart along the length of the main beam 1 to adapt to the concrete pouring operation requirements at different positions. Compared with the scheme in this embodiment where the concrete placing components 51 are placed on the concrete placing trolley 5, the number of concrete placing components 51 needs to be arranged more, and the utilization rate of the concrete placing components 51 will be lower.

[0046] Further, see Figures 2 to 6 , Figures 8 to 10 In this embodiment, the concrete conveying mechanism 4 includes a first belt conveyor 41 and a second belt conveyor 42. The first belt conveyor 41 has a first discharge port 411 located above the second belt conveyor 42 for guiding materials onto the second belt conveyor 42. The second belt conveyor 42 has a second discharge port 421 that connects with the material placing component 51. Preferably, both ends of the second belt conveyor 42 have second discharge ports 421. The second belt conveyor 42 can convey materials in both forward and reverse directions (forward conveying refers to conveying materials towards the tunnel face). When the second belt conveyor 42 conveys materials in the forward direction, the material placing trolley 5 moves forward, causing the corresponding material placing component 51 arranged on it to connect with the second discharge port 421 at the front end of the second belt conveyor 42. When the second belt conveyor 42 conveys materials in the reverse direction, the material placing trolley 5 moves backward, causing the corresponding material placing component 51 arranged on it to connect with the second discharge port 421 at the front end of the second belt conveyor 42.

[0047] See Figures 3 to 5 To illustrate how the concrete placing trolley 5, the concrete conveying mechanism 4, and the installation bracket 3 work together during operation, let's consider a specific example. The tunnel construction section is divided into a rebar binding area, an invert layer pouring area, and a filling layer pouring area. The installation bracket 3 moves longitudinally to... Figure 3 and Figure 4 The fabric cart 5 moved to the desired position. Figure 3 After positioning the fabric component 51 in the middle, align it with the second discharge port 421 located at the rear (see...). Figure 3 This allows for concrete pouring operations in the filling layer pouring area, with the concrete placing trolley 5 moving to... Figure 4 After positioning the fabric component 51 in the middle, align it with the second discharge port 421 located at the front (see...). Figure 4 This allows for concrete pouring operations in the invert arch layer pouring area; the installation support 3 can be moved longitudinally to... Figure 5 The fabric trolley 5 moves to the position. Figure 5 After positioning, align the corresponding fabric component 51 with the second discharge port 421 located at the front (see...). Figure 5 It can realize concrete pouring operation in the rebar binding area. Of course, if the placing trolley 5 moves to the corresponding placing component on it and connects to the second discharge port 421 located at the rear, it can realize concrete pouring operation in the invert layer pouring area.

[0048] Further, see Figures 3 to 5 , Figure 10In this embodiment, the gantry 2 located at the rear end of the main beam 1 facilitates docking between the concrete mixer truck and the concrete conveying mechanism 4. The gantry 2 located at the front end of the main beam 1 provides space for the mounting bracket 3 to move forward, which helps prevent collisions between the mounting bracket 3 and the tunnel face when it moves forward. In this specification, "front" refers to the tunnel excavation direction.

[0049] Further, see Figure 2 , Figure 6 , Figure 7 , Figures 12 to 14 In this embodiment, the material placement component 51 is a material placement trough, which has a simple structure and reliable use. Of course, in other embodiments, the material placement component 51 can also be a material placement pipe. Preferably, two material placement troughs are arranged at intervals on the left and right sides of the material placement trolley 5. One material placement trough points to the side of the tunnel, and this material placement trough is connected to the second discharge port 421 to carry out the pouring operation of the tunnel sidewall. The other material placement trough points to the construction part of the tunnel invert, and this material placement trough is connected to the second discharge port 421 to carry out the pouring operation of the tunnel invert layer.

[0050] Further, see Figure 7 , Figures 12 to 14 In this embodiment, the material placement component 51 is a telescopic structure, which can adapt to tunnels of different widths and can also change the pouring position during the invert arch pouring process by telescoping. Of course, in other embodiments, the material placement component 51 can also be a rotatable structure, for example, hinged to the traction trolley 31, and the tilt angle of the material placement component 51 can be adjusted by a telescoping adjustment mechanism. The material placement component 51 can also adapt to tunnels of different widths and change the pouring position by rotating. Of course, in other embodiments, the material placement component 51 can also be designed as a structure with both rotation and telescoping functions, which has a stronger ability to adapt to tunnels of different widths and makes changing the pouring position more flexible.

[0051] 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 concrete placement trestle bridge for pouring concrete for an inverted arch, comprising two parallel main beams (1), mounting brackets (3) arranged along the length of the main beams (1), a concrete conveying mechanism (4) mounted on the mounting brackets (3), and a concrete placement component (51) for docking with the concrete conveying mechanism (4), characterized in that: It also includes two parallel and spaced-ahead portal frames (2) arranged on the two main beams (1), with two vertical beams (21) of the portal frames (2) respectively located on the two main beams (1), and the two ends of the mounting bracket (3) respectively located on the crossbeams (22) of the two portal frames (2), and the fabric component (51) is arranged on both main beams (1).

2. The concrete placement trestle bridge for casting inverted arch concrete according to claim 1, characterized in that: The crossbeam (22) is provided with a transverse guide rail, and the two ends of the mounting bracket (3) are provided with a traction trolley (31). The upper part of the traction trolley (31) is provided with a first traveling part (311) that cooperates with the transverse guide rail. The first traveling part (311) is supported on the transverse guide rail.

3. The concrete placement trestle bridge for casting inverted arch concrete according to claim 2, characterized in that: The mounting bracket (3) has a first longitudinal guide rail (32) on both sides along its length direction. The traction trolley (31) has rollers (312) on both sides of its lower part that roll in cooperation with the first longitudinal guide rail (32). The first longitudinal guide rail (32) is supported on the rollers (312). At least one of the traction trolleys (31) is provided with a drive mechanism (6) for driving the rollers (312) to rotate.

4. The concrete placement trestle bridge for casting inverted arch concrete according to claim 3, characterized in that: The first longitudinal guide rail (32) is an I-shaped rail, and the upper flange of the first longitudinal guide rail (32) is supported on the upper side of the roller (312). The roller (312) is located on the outside of the first longitudinal guide rail (32). Alternatively, the roller (312) is located inside the first longitudinal guide rail (32).

5. The concrete placement trestle bridge for casting inverted arch concrete according to claim 3, characterized in that: The mounting bracket (3) is provided with a chain (7) along its length direction. The two ends of the chain (7) are fixed on the mounting bracket (3). The driving mechanism (6) includes a rotary drive motor (61) and a drive sprocket (62) provided on the traction trolley (31). The rotary drive motor (61) is used to drive the drive sprocket (62) to rotate around its own central axis. The traction trolley (31) is provided with driven sprockets (63) on both the front and rear sides of the drive sprocket (62). The chain (7) is wound around the drive sprocket (62) and each driven sprocket (63).

6. The concrete placement trestle bridge for casting inverted arch concrete according to claim 3 or 4, characterized in that: The main beam (1) is provided with a fabric trolley (5) that can move longitudinally. The main beam (1) is provided with a second longitudinal guide rail (11) along its length. The fabric trolley (5) is provided with a second traveling part (52) on both sides. The two second traveling parts (52) are respectively provided on the two second longitudinal guide rails (11) that can move longitudinally. The fabric components (51) are arranged on both sides of the fabric trolley (5).

7. The concrete placement trestle bridge for casting inverted arch concrete according to any one of claims 1 to 5, characterized in that: The concrete conveying mechanism (4) includes a first belt conveyor (41) and a second belt conveyor (42). The first belt conveyor (41) has a first discharge port (411) located above the second belt conveyor (42) for conveying materials to the second belt conveyor (42). The second belt conveyor (42) has a second discharge port (421) that is connected to the fabric distribution component (51).

8. The concrete placement trestle bridge for casting inverted arch concrete according to claim 7, characterized in that: The second belt conveyor (42) is provided with the second discharge port (421) at both ends, and the second belt conveyor (42) can convey materials in both forward and reverse directions.

9. The concrete placement trestle bridge for casting inverted arch concrete according to any one of claims 1 to 5, characterized in that: The fabric component (51) is a fabric trough or fabric tube.

10. A concrete placement trestle bridge for casting inverted arch concrete according to any one of claims 1 to 5, characterized in that: The fabric component (51) is a retractable or rotatable structure.

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