Pre-supporting trolley for tunnel excavation

Abstract

The utility model relates to the technical field of support trolleys, in particular to a pre-support trolley for tunnel excavation, which comprises an excavation trolley frame, a walking part is arranged at the bottom of the excavation trolley frame, a controller is arranged on the outer wall of the excavation trolley frame, a ladder stand is mounted on the outer wall of the excavation trolley frame, and a support is mounted on the outer wall of the excavation trolley frame. An extension piece is arranged on the outer wall of the excavation trolley frame; the pressure sensor on the inner wall of the arc-shaped top plate is also extruded, so that the pressure sensor generates an electric signal, and the electric signal generated by the pressure sensor is transmitted to the controller through the wire, so that the controller displays pressure data in real time; seepage water flows to a flow guide groove along a conduction groove and then flows to the flow guide groove through the conduction groove, the flow guide groove is formed in the outer wall of an arc-shaped top plate, after the flow guide groove collects the seepage water, the seepage water flows to a communication groove through the flow guide groove, and then the communication groove discharges the seepage water, so that the seepage water accumulation is prevented from influencing the structural quality, and the practicability is better.

Description

Technical Field

[0001] This utility model relates to the field of support trolley technology, specifically a pre-support trolley for tunnel excavation. Background Technology

[0002] A lining trolley, also known as a lining trolley, is a specialized piece of equipment designed for secondary lining (i.e., pouring the second layer of concrete) in underground engineering projects such as tunnels and water diversion tunnels. It not only improves construction efficiency but also ensures project quality and safety. By using a lining trolley, the concrete pouring process becomes more uniform and stable, ensuring the final structure has excellent integrity and durability. Furthermore, this equipment is typically equipped with advanced control systems and flexible, adjustable structural components to adapt to the needs of tunnel cross-sections of different shapes and sizes, greatly enhancing construction flexibility and adaptability.

[0003] While currently used lining trolleys provide support for the tunnel walls, they fall short in addressing the common problem of water seepage in tunnel environments. When water accumulates or seeps inside the tunnel, it tends to pool between the trolley and the tunnel wall, affecting the quality of concrete pouring, reducing structural strength, and potentially causing a series of subsequent engineering hazards. Existing pre-support trolleys lack effective monitoring methods, increasing safety uncertainties at the construction site. Especially under complex and variable geological conditions, deformation of the tunnel walls poses significant safety risks.

[0004] Therefore, a pre-support trolley for tunnel excavation is needed to improve the above problems. Utility Model Content

[0005] When a tunnel excavation pre-support trolley is used for support, if water accumulates or seeps inside the tunnel, this water can easily accumulate between the trolley and the tunnel wall. This accumulation of seepage water can affect the quality of construction. This utility model provides a tunnel excavation pre-support trolley to solve the above problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tunnel excavation pre-support trolley includes an excavation trolley frame, a walking component at the bottom of the excavation trolley frame, a controller on the outer wall of the excavation trolley frame, a ladder installed on the outer wall of the excavation trolley frame, an extension component on the outer wall of the excavation trolley frame, a support assembly at the port of the excavation trolley frame, and a sensing component installed on the outer wall of the support assembly.

[0008] The traveling component includes an electrically controlled telescopic rod, which is installed on the inner wall of the excavation trolley frame. One end of the electrically controlled telescopic rod passes through the excavation trolley frame and extends to the outer wall of the excavation trolley frame where a fixed housing is installed. A traveling drive wheel is installed on the opposite outer wall of the fixed housing.

[0009] The extension includes a vertical hoist and a fixed plate. The fixed plate is installed on the side wall of the excavation trolley frame. An electric telescopic rod is provided on the outer wall of the fixed plate. An outer plate is slidably connected to the outer wall of the fixed plate. One end of the electric telescopic rod is connected to the outer wall of the outer plate. The vertical hoist is slidably connected to the inner wall of the excavation trolley frame. An inner plate is installed on the outer wall of the vertical hoist.

[0010] As a preferred embodiment of this utility model, the support assembly includes a fixed bracket, which is installed on the side wall of the excavation trolley frame. A limit block is provided at one end of the fixed bracket, and an arc-shaped top plate is installed on the outer wall of the limit block.

[0011] As a preferred embodiment of this utility model, a guide groove is provided on the outer wall of the arc-shaped top plate, wherein a connecting groove is provided on one side of the guide groove and on the outer wall of the arc-shaped top plate, and the connection between the connecting groove and the guide groove is a connecting structure. Two sets of guide rails are provided and are respectively located on the top outer wall of the excavation trolley frame. A sliding bracket is slidably connected to the inner wall of the guide rail. An electric cylinder is installed on the inner wall of the sliding bracket, and a lifting block is installed at one end of the electric cylinder. The lifting block is located directly below the arc-shaped top plate.

[0012] As a preferred embodiment of this utility model, the sensing component includes a support column, which is disposed on the outer wall of the arc-shaped top plate. An upper top plate is slidably connected to the outer wall of the support column. A through groove is formed on the outer wall of the upper top plate. A pressure sensor is disposed on the inner wall of the upper top plate, and the pressure sensor is located on one side of the arc-shaped top plate.

[0013] As a preferred embodiment of this utility model, the controller is connected to an electrically controlled telescopic rod, a walking drive wheel, an electric telescopic rod, and a pressure sensor via wires, and the connection method is electrical connection. Multiple sets of electrically controlled telescopic rods are provided and are located on the outer wall of the excavation trolley frame, and multiple sets of walking components are provided and are located at the bottom corners of the excavation trolley frame.

[0014] As a preferred embodiment of this utility model, the excavation trolley frame is a frame structure, multiple sets of ladders are provided and are respectively located on the outer wall of the excavation trolley frame, two sets of fixed supports are provided and are respectively located on the opposite outer walls of the excavation trolley frame, and two sets of limiting blocks are provided and are respectively located on the opposite inner walls of the arc-shaped top plate.

[0015] As a preferred embodiment of this utility model, the guide groove is provided in multiple sets and is located on the outer wall of the arc-shaped top plate, the guide channel is provided in multiple sets and is located on the outer wall of the upper top plate, and the guide channel is located on one side of the guide groove.

[0016] As a preferred embodiment of this utility model, the support columns are arranged in multiple sets and are respectively located on the outer wall of the arc-shaped top plate, and the support columns form a ring array structure. The pressure sensors are arranged in multiple sets and are respectively located on the inner wall of the top plate.

[0017] Compared with existing technologies, this utility model, by installing sensing components in the tunnel excavation pre-support trolley, enables pressure sensors to display the pressure of the tunnel inner wall on the arc-shaped roof plate in real time during tunnel inner wall support. When the tunnel deforms, the tunnel inner wall applies pressure to the arc-shaped roof plate, and the pressure sensor on the inner wall of the arc-shaped roof plate is also compressed, thereby causing the pressure sensor to generate an electrical signal. The electrical signal generated by the pressure sensor is transmitted to the controller through wires, and the controller displays the pressure data in real time. When the set value is reached, the controller generates a prompt message to facilitate timely investigation by the staff. This solves the problem of certain safety risks that may occur when the tunnel inner wall deforms under complex and variable geological conditions.

[0018] This invention provides support components in a tunnel excavation pre-support trolley to support the tunnel wall. Water seepage flows through a guide channel to a diversion channel. A diversion channel is also provided on the outer wall of the arc-shaped top plate. After collecting the seepage, the diversion channel allows it to flow through to a connecting channel, which then drains the seepage, preventing its accumulation and impact on structural quality. This solves the problem that when water accumulates or seeps inside the tunnel, it can easily accumulate between the trolley and the tunnel wall, affecting the quality of concrete pouring. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the excavation trolley frame of this utility model;

[0021] Figure 3 This is a side view of the present invention;

[0022] Figure 4 This utility model Figure 3 Enlarged schematic diagram of structure A;

[0023] Figure 5 This utility model Figure 3 An enlarged schematic diagram of the B structure.

[0024] In the diagram: 1. Excavation trolley frame; 2. Traveling component; 21. Electrically controlled telescopic rod; 22. Fixed housing; 23. Traveling drive wheel; 3. Controller; 4. Ladder; 5. Extension component; 51. Vertical hoist; 52. Fixed plate; 53. Electrically controlled telescopic rod; 54. Outer plate; 55. Inner plate; 6. Support assembly; 601. Fixed bracket; 602. Limiting block; 603. Arc-shaped top plate; 604. Guide channel; 605. Connecting channel; 606. Guide rail; 607. Sliding bracket; 608. Electric cylinder; 609. Lifting block; 7. Sensing assembly; 701. Support column; 702. Top plate; 703. Guide channel; 704. Pressure sensor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example: Please refer to Figure 1-5 The tunnel excavation pre-support trolley shown includes an excavation trolley frame 1, a walking component 2 at the bottom of the excavation trolley frame 1, a controller 3 on the outer wall of the excavation trolley frame 1, a ladder 4 installed on the outer wall of the excavation trolley frame 1, an extension component 5 on the outer wall of the excavation trolley frame 1, a support component 6 at the port of the excavation trolley frame 1, and a sensing component 7 installed on the outer wall of the support component 6.

[0027] The traveling component 2 includes an electrically controlled telescopic rod 21, which is installed on the inner wall of the excavation trolley frame 1. One end of the electrically controlled telescopic rod 21 passes through the excavation trolley frame 1 and extends to the outer wall of the excavation trolley frame 1, where a fixed housing 22 is installed. Multiple sets of electrically controlled telescopic rods 21 are provided and are located on the outer wall of the excavation trolley frame 1 respectively. Travel drive wheels 23 are installed on the opposite outer walls of the fixed housing 22.

[0028] The extension 5 includes a vertical hoist 51 and a fixing plate 52. The fixing plate 52 is installed on the side wall of the excavation trolley frame 1. An electric telescopic rod 53 is provided on the outer wall of the fixing plate 52. An outer plate 54 is slidably connected to the outer wall of the fixing plate 52. One end of the electric telescopic rod 53 is connected to the outer wall of the outer plate 54. The vertical hoist 51 is slidably connected to the inner wall of the excavation trolley frame 1. An inner plate 55 is installed on the outer wall of the vertical hoist 51.

[0029] In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 and Figure 4The support assembly 6 includes a fixed bracket 601, which is installed on the side wall of the excavation trolley frame 1. Two sets of fixed brackets 601 are provided, located on opposite outer walls of the excavation trolley frame 1. One end of each fixed bracket 601 is provided with a limiting block 602. Two sets of limiting blocks 602 are provided, located on opposite inner walls of the arc-shaped top plate 603. The arc-shaped top plate 603 is installed on the outer wall of the limiting blocks 602. Multiple sets of guide channels 604 are provided on the outer wall of the arc-shaped top plate 603. On the outer wall of 603, a connecting groove 605 is provided on one side of the guide groove 604 and on the outer wall of the arc-shaped top plate 603. The connection between the connecting groove 605 and the guide groove 604 is a connecting structure. Two sets of guide rails 606 are provided and are respectively located on the top outer wall of the excavation trolley frame 1. A sliding bracket 607 is slidably connected to the inner wall of the guide rail 606. An electric cylinder 608 is installed on the inner wall of the sliding bracket 607, and a lifting block 609 is installed at one end of the electric cylinder 608. The lifting block 609 is located directly below the arc-shaped top plate 603.

[0030] In this embodiment, specific references Figure 1 , Figure 3 , Figure 4 and Figure 5 The sensing component 7 includes a support column 701, which is disposed on the outer wall of the arc-shaped top plate 603. Multiple sets of support columns 701 are disposed on the outer wall of the arc-shaped top plate 603 and are arranged in a ring array structure. An upper top plate 702 is slidably connected to the outer wall of the support column 701. A guide groove 703 is provided on the outer wall of the upper top plate 702. Multiple sets of guide grooves 703 are disposed on the outer wall of the upper top plate 702 and are located on one side of the guide groove 604. A pressure sensor 704 is disposed on the inner wall of the upper top plate 702 and is located on one side of the arc-shaped top plate 603. Multiple sets of pressure sensors 704 are disposed on the inner wall of the upper top plate 702.

[0031] The controller 3 is electrically connected to the electric telescopic rod 21, the walking drive wheel 23, the electric telescopic rod 53, and the pressure sensor 704 via wires, thereby energizing the device. This allows the controller 3 to control the electric telescopic rod 21, the walking drive wheel 23, the electric telescopic rod 53, and the pressure sensor 704 to be energized. Multiple sets of walking components 2 are located at the bottom corners of the excavation trolley frame 1. The excavation trolley frame 1 is a frame structure. Multiple sets of ladders 4 are located on the outer wall of the excavation trolley frame 1.

[0032] This scheme is used when the tunnel excavation pre-support trolley is in operation. The trolley frame 1 is moved to the construction position via the traveling mechanism 2. Then, the controller 3 is turned on, causing the electric cylinder 608 to operate. This causes one end of the electric cylinder 608 to push the lifting block 609 upwards. Simultaneously, the lifting block 609 is positioned directly above the arc-shaped top plate 603, causing it to push the arc-shaped top plate 603 upwards, thus placing the arc-shaped top plate 603 against the tunnel inner wall. Subsequently, when the tunnel deforms, the tunnel inner wall presses against the arc-shaped top plate... Pressure is applied to the plate 603, and at the same time, the pressure sensor 704 on the inner wall of the arc-shaped top plate 603 is also squeezed, which causes the pressure sensor 704 to generate an electrical signal. The electrical signal generated by the pressure sensor 704 is transmitted to the controller 3 through the wire, which then displays the pressure data in real time. When the set value is reached, the controller 3 generates a prompt message so that the staff can check in time. This solves the problem of certain safety risks that may occur if the inner wall of the tunnel deforms under complex and variable geological conditions.

[0033] By using the guide groove 703 set on the outer wall of the upper top plate 702, when water seeps into the inner wall of the tunnel, the seepage water flows along the guide groove 703 and then flows through the guide groove 703 to the guide groove 604. The guide groove 604 is set on the outer wall of the arc-shaped top plate 603. After the guide groove 604 collects the seepage water, it will flow through the guide groove 604 to the connecting groove 605. Then the connecting groove 605 drains away the seepage water to prevent the seepage water from accumulating and affecting the structural quality. This solves the problem that when water accumulates or seeps into the tunnel, the water tends to accumulate between the trolley and the tunnel wall, which will affect the quality of concrete pouring.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel excavation pre-support trolley, comprising an excavation trolley frame (1), characterized in that: The bottom of the excavation trolley frame (1) is provided with a walking component (2), the outer wall of the excavation trolley frame (1) is provided with a controller (3), the outer wall of the excavation trolley frame (1) is provided with a ladder (4), the outer wall of the excavation trolley frame (1) is provided with an extension component (5), the port of the excavation trolley frame (1) is provided with a support component (6), and the outer wall of the support component (6) is provided with a sensing component (7). The traveling component (2) includes an electrically controlled telescopic rod (21), which is installed on the inner wall of the excavation trolley frame (1). One end of the electrically controlled telescopic rod (21) passes through the excavation trolley frame (1) and extends to the outer wall of the excavation trolley frame (1), where a fixed housing (22) is installed. A traveling drive wheel (23) is installed on the opposite outer wall of the fixed housing (22). The extension (5) includes a vertical hoist (51) and a fixing plate (52). The fixing plate (52) is installed on the side wall of the excavation trolley frame (1). An electric telescopic rod (53) is provided on the outer wall of the fixing plate (52). An outer plate (54) is slidably connected to the outer wall of the fixing plate (52). One end of the electric telescopic rod (53) is connected to the outer wall of the outer plate (54). The vertical hoist (51) is slidably connected to the inner wall of the excavation trolley frame (1). An inner plate (55) is installed on the outer wall of the vertical hoist (51). The support assembly (6) includes a fixed bracket (601) and a guide rail (606). The fixed bracket (601) is installed on the side wall of the excavation trolley frame (1). A limit block (602) is provided at one end of the fixed bracket (601). An arc-shaped top plate (603) is installed on the outer wall of the limit block (602). A guide groove (604) is provided on the outer wall of the arc-shaped top plate (603). A connecting groove (605) is provided on one side of the guide groove (604) and on the outer wall of the arc-shaped top plate (603). The connection between the connecting groove (605) and the guide groove (604) is a connecting structure. Two sets of guide rails (606) are provided and are respectively located on the top outer wall of the excavation trolley frame (1). A sliding bracket (607) is slidably connected to the inner wall of the guide rail (606). An electric cylinder (608) is installed on the inner wall of the sliding bracket (607). A lifting block (609) is installed at one end of the electric cylinder (608). The lifting block (609) is located directly below the arc-shaped top plate (603).

2. The tunnel excavation pre-support trolley according to claim 1, characterized in that: The sensing component (7) includes a support column (701) disposed on the outer wall of the arc-shaped top plate (603). An upper top plate (702) is slidably connected to the outer wall of the support column (701). A guide groove (703) is provided on the outer wall of the upper top plate (702). A pressure sensor (704) is disposed on the inner wall of the upper top plate (702), and the pressure sensor (704) is located on one side of the arc-shaped top plate (603).

3. A tunnel excavation pre-support trolley according to claim 2, characterized in that: The controller (3) is connected to the electric telescopic rod (21), the walking drive wheel (23), the electric telescopic rod (53) and the pressure sensor (704) via wires, and the connection method is electrical connection. The electric telescopic rod (21) is provided in multiple sets and is located on the outer wall of the excavation trolley frame (1). The walking component (2) is provided in multiple sets and is located at the bottom corner of the excavation trolley frame (1).

4. A tunnel excavation pre-support trolley according to claim 3, characterized in that: The excavation trolley frame (1) is a frame structure. The ladder (4) is provided in multiple sets and is located on the outer wall of the excavation trolley frame (1). The fixed bracket (601) is provided in two sets and is located on the opposite outer wall of the excavation trolley frame (1). The limiting block (602) is provided in two sets and is located on the opposite inner wall of the arc-shaped top plate (603).

5. A tunnel excavation pre-support trolley according to claim 4, characterized in that: The guide channel (604) is provided in multiple sets and is located on the outer wall of the arc-shaped top plate (603). The guide channel (703) is provided in multiple sets and is located on the outer wall of the upper top plate (702). The guide channel (703) is located on one side of the guide channel (604).

6. A tunnel excavation pre-support trolley according to claim 5, characterized in that: The support column (701) is provided in multiple sets and is located on the outer wall of the arc-shaped top plate (603), and the support column (701) is arranged in a ring array structure. The pressure sensor (704) is provided in multiple sets and is located on the inner wall of the upper top plate (702).

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