A movable support structure for underpass tunnels

Abstract

This utility model relates to the field of tunnel construction equipment technology, and in particular to a mobile support structure for underpass tunnels. It includes a base, baffles for tunnel support, a gantry frame with hydraulic cylinders, and positioning rods circumferentially distributed and extending underground fixedly installed on the base. Four circumferentially distributed support rods are also provided on the base. This utility model features clamping blocks to clamp the positioning blocks using a clamping structure, eliminating the need for bolts, simplifying the installation process, and improving efficiency. The baffles supporting the tunnel evenly distribute the surrounding rock pressure, preventing local collapse or deformation. The fastening structure allows for quick-disassembly of the baffles, eliminating the need to remove all baffles, only the target area, reducing construction interference. The automatically lifting support frame that supports the baffles can adjust the support height in real time according to the tunnel construction progress, maintaining effective support force on the baffles at all times, and improving the safety of construction operations.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, and in particular to a mobile support structure for underpass tunnels. Background Technology

[0002] Tunnel construction equipment technology refers to the general term for mechanized equipment and processes used in the entire process of tunnel excavation, support, transportation and environmental control.

[0003] According to CN207469261U, a movable support structure for underpass tunnels is disclosed, including a support jacking plate, with a support side plate perpendicular to it fixedly connected to each of the left and right sides. The main body of the support structure can independently support the soil on both sides of the tunnel, and the extension and retraction of hydraulic cylinders allows for the overall movement of the support structure. However, the aforementioned document only supports the soil on both sides of the tunnel. In soft rock or high-stress strata, unsupported areas will deform and bulge, affecting tunnel construction. When construction work is required in the supported areas, the entire support system must be dismantled, leading to extended construction time and increasing the risk of tunnel safety accidents. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the existing technology fails to carry out construction work in the support area, and to propose a mobile support structure for underpass tunnels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A mobile support structure for underpass tunnels includes a base, a baffle for supporting the tunnel, a gantry frame with hydraulic cylinders, and positioning rods circumferentially distributed and extending underground fixedly installed on the base. Four circumferentially distributed support rods are provided on the base, and positioning blocks extending into the base are fixedly installed on the support rods. A clamping structure for clamping the positioning blocks is provided on the base. Four sets of connecting frames are fixedly installed on the support rods, and connecting blocks integrally connected to the baffle are placed inside the connecting frames. A fastening structure for securing the connecting blocks is provided on the connecting frames. Ring-shaped support frames are provided on the four support rods. An automatically lifting support frame for supporting the baffle is placed on the base, and the support frame is mounted on the gantry frame with hydraulic cylinders.

[0007] Preferably, the positioning rod is vertically arranged, the support rod is vertically arranged at the upper end of the base, the base has a positioning groove corresponding to the positioning block, the connecting frame is horizontally arranged on both sides of the support rod, the connecting frame has a concave structure, the baffle has an arc-shaped structure, and the connecting block is horizontally arranged on both sides of the baffle.

[0008] Preferably, the clamp structure includes four movable rods slidably sleeved in the base, and clamp blocks for clamping the positioning blocks are fixedly installed on the movable rods. A spring that cooperates with the movable rods is welded between the clamp block and the base.

[0009] The base is fitted with four movable frames that limit the movement of the moving rod, and lifting blocks are fixedly installed on the movable frames. A spring that cooperates with the movable frame is welded between the lifting block and the base.

[0010] Preferably, the moving rod is horizontally positioned and extends to the outer side of the base, the positioning block has a clamping groove corresponding to the clamping block, and the second spring is horizontally sleeved on the moving rod;

[0011] The movable frame has a concave structure, and the clamp block has a limiting groove corresponding to the movable frame. The spring is vertically sleeved on the movable frame.

[0012] Preferably, the fastening structure includes a fastening frame fixedly installed on the connecting frame, and a pressure block is slidably sleeved inside the fastening frame. A spring is welded between the pressure block and the fastening frame. A fastening rod for fastening the connecting block is placed on the connecting frame. A limiting block for limiting the position of the connecting block is fixedly installed on the pressure block. A lever and a guide block extending into the connecting frame are fixedly installed on the pressure block.

[0013] Preferably, the fastening bracket is horizontally positioned on one side of the fastening rod, the spring is horizontally positioned on one side of the pressure block extending into the fastening bracket, the fastening rod has a fastening groove corresponding to the fastening rod, and the connecting bracket has a guide groove corresponding to the guide block.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This utility model has a clamping block for clamping the positioning block through a clamping structure, which eliminates the need for bolt fixation, simplifies the installation process, and improves efficiency. By setting baffles to support the tunnel, the pressure of the surrounding rock is evenly distributed to prevent local collapse or deformation.

[0016] 2. This utility model features a quick-release baffle with a fastening structure, eliminating the need to remove all baffles except those in the target area, thus reducing construction interference and improving work efficiency. Furthermore, the automatically lifting support frame that supports the baffles allows for real-time adjustment of the support height according to the tunnel construction progress, maintaining effective support for the baffles and enhancing the safety of the construction operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a movable support structure for an underpass tunnel proposed in this utility model.

[0018] Figure 2 This is a cross-sectional view of the base of a movable support structure for an underpass tunnel proposed in this utility model.

[0019] Figure 3 This is an enlarged schematic diagram of structure A of a movable support structure for an underpass tunnel proposed in this utility model;

[0020] Figure 4 This is a top sectional view of a movable support structure for an underpass tunnel proposed in this utility model;

[0021] Figure 5 This is an enlarged schematic diagram of structure B of a movable support structure for an underpass tunnel proposed in this utility model.

[0022] In the diagram: 1. Base; 2. Support rod; 3. Positioning block; 4. Moving frame; 5. Lifting block; 6. Spring 1; 7. Moving rod; 8. Clamp block; 9. Spring 2; 10. Connecting frame; 11. Connecting block; 12. Baffle; 13. Fastening frame; 14. Pressure block; 15. Spring 3; 16. Fastening rod; 17. Limiting block; 18. Support frame; 19. Gantry frame with hydraulic cylinder. Detailed Implementation

[0023] 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.

[0024] Reference Figures 1-5 A mobile support structure for underpass tunnels includes a base 1, a baffle 12 for supporting the tunnel, and a gantry frame with hydraulic cylinders 19.

[0025] The base 1 is fixedly equipped with circumferentially distributed positioning rods that extend into the ground. The positioning rods provide a stable anchor for the base 1, resist the influence of lateral forces and settlement during construction, and improve the stability of the overall structure.

[0026] The base 1 is provided with four circumferentially distributed support rods 2, and positioning blocks 3 extending into the base 1 are fixedly installed on the support rods 2. The positioning blocks 3 are embedded in the positioning grooves of the base 1 to achieve the initial positioning of the support rods 2 and provide a basis for the clamping structure to be fastened.

[0027] The base 1 is equipped with a clamping structure for clamping the positioning block 3. The clamping block 8 clamping the positioning block 3 through the clamping structure enables the support rod 2 to be installed quickly without bolt fixation, simplifying the installation process and improving the efficiency of construction operations.

[0028] The clamp structure includes four movable rods 7 that are slidably fitted inside the base 1. The movable rods 7 guide the clamp block 8 to prevent the spring 9 from shifting when it is under force.

[0029] A clamping block 8 is fixedly installed on the movable rod 7 to clamp the positioning block 3, thereby achieving a stable installation of the support rod 2.

[0030] A spring 9 that cooperates with the moving rod 7 is welded between the clamp block 8 and the base 1. The spring 9 drives the clamp block 8 to automatically reset and clamp the positioning block 3, ensuring the quick installation and fixation of the support rod 2.

[0031] The base 1 has four sliding frames 4 that limit the movement of the moving rod 7. The moving frames 4, together with the lifting block 5 and the spring 6, release the limit on the clamp block 8 when the positioning block 3 is installed, ensuring the normal operation of the clamp structure.

[0032] A lifting block 5 is fixedly installed on the movable frame 4. A spring 6 that cooperates with the movable frame 4 is welded between the lifting block 5 and the base 1. After the positioning block 3 is moved out, the spring 6 drives the movable frame 4 to reset, thereby re-limiting the clamp block 8.

[0033] The moving rod 7 is horizontally set and extends to the outside of the base 1. The positioning block 3 has a clamping groove corresponding to the clamping block 8. The clamping groove corresponds to the clamping block 8 to clamp the positioning block 3 and ensure the effective operation of the clamping structure. The spring 9 is horizontally sleeved on the moving rod 7.

[0034] The movable frame 4 has a concave structure, and the clamp block 8 has a limiting groove corresponding to the movable frame 4. The spring 6 is vertically sleeved on the movable frame 4.

[0035] Four sets of connecting brackets 10 are fixedly installed on the support rod 2, and a connecting block 11 that is integrally connected with the baffle 12 is placed inside the connecting bracket 10.

[0036] The connecting frame 10 is equipped with a fastening structure for fastening the connecting block 11. The fastening structure is equipped with a fastening rod 16 for fastening the connecting block 11, and the baffle 12 can be quickly disassembled without removing all the baffles 12, reducing construction interference and improving work efficiency.

[0037] The fastening structure includes a fastening frame 13 fixedly installed on the connecting frame 10, and a pressure block 14 is slidably sleeved inside the fastening frame 13. A spring 15 is welded between the pressure block 14 and the fastening frame 13. The spring 15 drives the pressure block 14 to reset, so that the pressure block 14 drives the limiting block 17 to limit the fastening rod 16, ensuring the stability of the fastening structure.

[0038] A fastening rod 16 for securing the connecting block 11 is placed on the connecting frame 10, and a limiting block 17 for limiting the position of the connecting block 11 is fixedly installed on the pressure block 14.

[0039] A lever and a guide block extending into the connecting frame 10 are fixedly installed on the pressure block 14. The guide block guides the movement of the pressure block 14 and prevents the spring 15 from deviating when it is under force.

[0040] The fastening bracket 13 is horizontally positioned on one side of the fastening rod 16, and the spring 15 is horizontally positioned on one side of the pressure block 14 extending into the fastening bracket 13. The fastening rod 16 has a fastening groove corresponding to the fastening rod 16, and the connecting bracket 10 has a guide groove corresponding to the guide block.

[0041] A ring-shaped support frame is installed on each of the four support rods 2. The ring-shaped support frame improves the connection stability between the support rods 2 and ensures the stability of the baffle 12 against the pressure of the surrounding rock.

[0042] A support frame 18 that automatically lifts and supports the baffle 12 is placed on the base 1. The support frame 18 adjusts its support height in real time according to the progress of tunnel operation, always maintaining effective support force on the baffle 12, thereby improving the safety of construction operations. The support frame 18 is set on the gantry frame plus hydraulic cylinder 19.

[0043] The positioning rod is set vertically, the support rod 2 is set vertically at the upper end of the base 1, the base 1 has a positioning groove corresponding to the positioning block 3, and the connecting frame 10 is set horizontally on both sides of the support rod 2. The connecting frame 10 has a concave structure.

[0044] The baffle 12 has an arc-shaped structure. The arc-shaped structure of the baffle 12 better fits the arc-shaped inner wall of the tunnel, increases the contact area with the surrounding rock, evenly disperses the pressure of the surrounding rock, improves the support effect of the tunnel, and reduces the risk of local collapse or deformation. The connecting block 11 is horizontally set on both sides of the baffle 12.

[0045] It should be noted that the specific model and specifications of the gantry crane and hydraulic cylinder 19 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0046] The functional principle of this utility model can be explained through the following operation methods:

[0047] When it is necessary to install support rod 2;

[0048] Positioning block 3 is placed in the positioning groove of base 1. Positioning block 3 drives lifting block 5 to move downward. Lifting block 5 drives moving frame 4 to press spring 6. Moving frame 4 is disconnected from clamp block 8. Spring 9 drives clamp block 8 to clamp positioning block 3, realizing the quick installation of support rod 2.

[0049] When it is necessary to install the baffle 12;

[0050] Place the connecting block 11 in the connecting frame 10, move the lever, and the lever will drive the pressure block 14 to apply pressure to the spring 15. Place the fastening rod 16 in the fastening groove.

[0051] Release the lever, and spring 3 15 pushes the pressure block 14 to move. The pressure block 14 drives the limiting block 17 to limit the fastening rod 16. The fastening rod 16 fastens the connecting block 11, completing the installation of the baffle 12.

[0052] When it is necessary to carry out work in the supported area, the baffle 12 in the target area is removed;

[0053] Move the lever, and the lever will drive the pressure block 14 to apply pressure to the spring 15. The pressure block 14 will cause the limiting block 17 to disconnect from the fastening rod 16. Pull out the fastening rod 16, and the fastening rod 16 will disconnect from the connecting block 11, so as to achieve quick disassembly of the baffle 12 in the target area.

[0054] When it is necessary to adjust the support height of the support frame 18 according to the progress of tunnel construction;

[0055] The gantry frame and hydraulic cylinder 19 drive the support frame 18 to rise and fall, so that the support frame 18 always maintains effective support for the baffle 12.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A movable support structure for an underpass tunnel, comprising a base (1), a baffle (12) for supporting the tunnel, and a gantry frame with hydraulic cylinders (19), characterized in that, The base (1) is fixedly installed with circumferentially distributed positioning rods extending to the ground. The base (1) is provided with four circumferentially distributed support rods (2), and the support rods (2) are fixedly installed with positioning blocks (3) extending into the base (1). The base (1) is provided with a clamping structure for clamping the positioning blocks (3). The support rods (2) are fixedly installed with four sets of connecting frames (10). The connecting frames (10) contain connecting blocks (11) integrally connected with the baffle (12). The connecting frames (10) are provided with a fastening structure for fastening the connecting blocks (11). The four support rods (2) are provided with ring-shaped support frames. The base (1) is provided with an automatically lifting support frame (18) for supporting the baffle (12). The support frame (18) is set on the gantry frame plus hydraulic cylinder (19).

2. The movable support structure for an underpass tunnel according to claim 1, characterized in that, The positioning rod is set vertically, the support rod (2) is set vertically at the upper end of the base (1), the base (1) has a positioning groove corresponding to the positioning block (3), the connecting frame (10) is set horizontally on both sides of the support rod (2), the connecting frame (10) has a concave structure, the baffle (12) has an arc structure, and the connecting block (11) is set horizontally on both sides of the baffle (12).

3. The movable support structure for an underpass tunnel according to claim 1, characterized in that, The clamp structure includes four movable rods (7) that are slidably sleeved in the base (1), and a clamp block (8) for clamping the positioning block (3) is fixedly installed on the movable rod (7). A spring (9) that cooperates with the movable rod (7) is welded between the clamp block (8) and the base (1). The base (1) is slidably fitted with four movable frames (4) that limit the movement of the moving rod (7), and a lifting block (5) is fixedly installed on the movable frame (4). A spring (6) that cooperates with the movable frame (4) is welded between the lifting block (5) and the base (1).

4. The movable support structure for an underpass tunnel according to claim 3, characterized in that, The moving rod (7) is horizontally set and extends to the outside of the base (1). The positioning block (3) has a clamping groove corresponding to the clamping block (8). The second spring (9) is horizontally sleeved on the moving rod (7). The movable frame (4) has a concave structure, and the clamp block (8) has a limiting groove corresponding to the movable frame (4). The spring (6) is vertically sleeved on the movable frame (4).

5. A movable support structure for an underpass tunnel according to claim 1, characterized in that, The fastening structure includes a fastening frame (13) fixedly installed on the connecting frame (10), and a pressure block (14) is slidably sleeved inside the fastening frame (13). A spring (15) is welded between the pressure block (14) and the fastening frame (13). A fastening rod (16) for fastening the connecting block (11) is placed on the connecting frame (10). A limiting block (17) for limiting the position of the connecting block (11) is fixedly installed on the pressure block (14). A lever and a guide block extending into the connecting frame (10) are fixedly installed on the pressure block (14).

6. A movable support structure for an underpass tunnel according to claim 5, characterized in that, The fastening bracket (13) is horizontally positioned on one side of the fastening rod (16), the spring three (15) is horizontally positioned on one side of the pressure block (14) extending into the fastening bracket (13), the fastening rod (16) has a fastening groove corresponding to the fastening rod (16), and the connecting bracket (10) has a guide groove corresponding to the guide block.

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