An adjustable support device for subway construction tunnels

Abstract

This utility model relates to a tunnel support device, belonging to the field of tunnel construction technology, specifically an adjustable subway construction tunnel support device, including a base plate and a support plate. Connecting plates are fixedly installed on both sides of the support plate, and it also includes a support plate, a height adjustment mechanism, and an angle adjustment mechanism. This utility model achieves the effect of providing all-round and precise support for the inner wall of the tunnel, solving the problems of existing fixed support structures, which cannot adapt to the curvature of the inner wall of the tunnel, easily leading to gaps between the support surface and the inner wall, forming stress concentration, and lacking the automation capability of coordinated control, thus affecting construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to an adjustable support device for subway construction tunnels. Background Technology

[0002] During the construction of subway tunnels, the support work after tunnel excavation is a key link to ensure construction safety and project quality.

[0003] A search revealed Chinese patent CN221524857U, which discloses a support device for subway tunnel construction. The device includes an installation plate with a lifting platform above it. It also includes a movable base plate, a lifting mechanism, and a moving mechanism. The movable base plate is slidably positioned above the installation plate. The lifting mechanism is located between the movable base plate and the lifting platform, and the moving mechanism is located between the movable base plate and the installation plate. The lifting mechanism includes a rotating component, a guiding component, two second lead screws, two guide rods, and two rotating seats. The moving mechanism includes two guide rails and a drive component. By setting up the lifting mechanism, the lifting platform can be driven to move up and down, achieving automatic adjustment of the platform's height. This facilitates adjusting the platform to a suitable height for construction, resulting in high adjustment efficiency, eliminating the need for manual adjustment, and making it convenient to use.

[0004] Based on the above search and existing technology, the findings were as follows:

[0005] The aforementioned patented support structure is fixed and cannot adapt to the curvature of the tunnel wall, which can easily lead to gaps between the support surface and the inner wall, resulting in stress concentration. Furthermore, it lacks automated capabilities for coordinated control, affecting construction efficiency, and therefore has certain limitations. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes an adjustable subway construction tunnel support device. This device, through a dual adjustment mechanism of height and angle, can adapt to tunnel walls of different shapes, achieving precise support in all directions.

[0007] The technical solution to achieve the purpose of this utility model is: an adjustable subway construction tunnel support device, including a base plate and a support plate, with connecting plates fixedly installed on both sides of the support plate, and also including a support plate, a height adjustment mechanism and an angle adjustment mechanism;

[0008] A pair of the support plates are fixedly installed on the surface of the support plate;

[0009] The height adjustment mechanism includes a cylinder that is fixedly installed between the base plate and the support plate;

[0010] Preferably, the angle adjustment mechanism includes a bidirectional lead screw rotatably mounted between the connecting plates, wherein one lead screw is provided on one connecting plate and the other lead screw is provided on the other connecting plate.

[0011] Preferably, a limiting rod is fixedly installed between the connecting plates, a moving block is sleeved between the first and second lead screws and the limiting rod, a support is fixedly installed on the moving block, and a top support plate is fixedly installed on the top of the pair of support plates.

[0012] The support has a connecting rod rotatably mounted inside, and a side support plate is fixedly installed on the connecting rod. The side support plate is hinged to both sides of the top support plate.

[0013] Preferably, a drive motor is fixedly installed on one of the support plates, the output end of the drive motor passes through the support plate and is fixedly installed with a bevel gear one, and a bevel gear two is fixedly installed on one end of the lead screw one, the bevel gear one and the bevel gear two meshing.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] Firstly, this utility model achieves comprehensive and precise support for the tunnel inner wall through the synergistic effect of the height adjustment mechanism and the angle adjustment mechanism. It can adapt to tunnel inner walls of different shapes and specifications, greatly improving the stability and reliability of the support.

[0016] Secondly, this utility model reduces the reliance on various supporting equipment during construction, simplifies the construction operation process, effectively improves construction efficiency, and reduces construction costs and safety risks.

[0017] This solves the problems of existing fixed support structures, which cannot adapt to the curvature of the tunnel inner wall, easily leading to gaps between the support surface and the inner wall, stress concentration, and lack of automated collaborative control capabilities, thus affecting construction efficiency. Attached Figure Description

[0018] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a first-view structural schematic diagram provided by this utility model;

[0020] Figure 2 This is a schematic diagram of the second-view structure provided by this utility model;

[0021] Figure 3 This is a partial top view structural schematic diagram provided by this utility model;

[0022] Figure 4 This utility model provides Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 This utility model provides Figure 3 Enlarged structural diagram at point B.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Base plate; 2. Support plate; 21. Connecting plate; 3. Height adjustment mechanism; 31. Cylinder; 4. Support plate; 41. Drive motor; 411. Bevel gear one; 5. Top support plate; 6. Side support plate; 61. Connecting rod; 7. Angle adjustment mechanism; 71. Limiting rod; 72. Moving block; 721. Support; 73. Double-acting lead screw; 731. Lead screw one; 732. Lead screw two; 733. Bevel gear two. Detailed Implementation

[0026] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0027] This utility model provides an adjustable support device for subway construction tunnels through improvements. The technical solution of this utility model is as follows:

[0028] like Figures 1-5 As shown, an adjustable subway construction tunnel support device includes a base plate 1 and a support plate 2. Connecting plates 21 are fixedly installed on both sides of the support plate 2. It also includes a support plate 4, a height adjustment mechanism 3 and an angle adjustment mechanism 7.

[0029] A pair of support plates 4 are fixedly installed on the surface of the support plate 2, providing basic support for the angle adjustment mechanism 7;

[0030] The height adjustment mechanism 3 includes a cylinder 31 fixedly installed between the base plate 1 and the support plate 2. By using the cylinder 31, the height of the support plate 2 can be quickly and accurately adjusted.

[0031] The angle adjustment mechanism 7 includes a bidirectional lead screw 73 rotatably mounted between the connecting plates 21. One connecting plate 21 is provided with lead screw 731 and the other connecting plate 21 is provided with lead screw 732. It can precisely control the support angle of the side support plate 6. The combination of the two enables the support device to adapt to tunnel inner walls of different shapes and specifications, greatly improving the versatility and applicability of the device.

[0032] Furthermore, a limiting rod 71 is fixedly installed between the connecting plates 21, and a moving block 72 is sleeved together between the first lead screw 731, the second lead screw 732 and the limiting rod 71. A support 721 is fixedly installed on the moving block 72, and a top support plate 5 is fixedly installed on the top of a pair of support plates 4. This can evenly distribute the pressure on the tunnel and effectively enhance the stability of the tunnel.

[0033] As a further embodiment of this utility model, a connecting rod 61 is rotatably arranged inside the support 721, and a side support plate 6 is fixedly installed on the connecting rod 61. The side support plate 6 is hinged to both sides of the top support plate 5, and an anti-slip and wear-resistant layer is provided on the surface of the side support plate 6 to ensure close contact with the tunnel sidewall and to prevent wear.

[0034] Furthermore, a drive motor 41 is fixedly installed on one of the support plates 4. The output end of the drive motor 41 passes through the support plate 4 and is fixedly installed with a bevel gear 411. A bevel gear 733 is fixedly installed at one end of the lead screw 731. The bevel gear 411 and the bevel gear 733 mesh with each other, which simplifies the construction operation process and effectively improves the construction efficiency.

[0035] The specific working method is as follows: This device uses a base plate 1 and a support plate 2 to form a basic frame. The height adjustment mechanism 3 driven by the cylinder 31 achieves precise vertical lifting. First, the drive motor 41 drives the bidirectional lead screw 73 to rotate through the bevel gear transmission, causing the lead screws 731 and 732 with opposite thread directions to produce opposite linear motion. Then, through the sliding of the moving block 72 on the limit rod 71, it is converted into the angle adjustment of the side support plate 6 via the grooved pin connection of the connecting rod 61 and the support 721. When the motor starts, the transmission system completes the initial angle adjustment within 1.5 seconds and reaches the preset pressure value of 5-8kN within 3 seconds. With the fixed top support plate 5 and the side support plate with anti-slip wear-resistant layer and a friction coefficient of 0.6, a three-way cooperative support system is formed. Finally, the electromechanical cooperative control of the entire device is achieved. The height and angle adjustment mechanisms are linked and controlled by the PLC, with a response time of less than 0.5 seconds, so that the fit gap between the support surface and the inner wall of the tunnel is controlled within 1mm, which is 5 times more accurate than the traditional device.

[0036] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. An adjustable subway construction tunnel support device, comprising a base plate (1) and a support plate (2), characterized in that: The support plate (2) is fixedly installed with connecting plates (21) on both sides, and also includes: Support plate (4), a pair of support plates (4) are fixedly installed on the surface of support plate (2); The height adjustment mechanism (3) includes a cylinder (31) fixedly installed between the base plate (1) and the support plate (2); Angle adjustment mechanism (7) includes a bidirectional lead screw (73) rotatably mounted between connecting plates (21), with lead screw one (731) provided on one connecting plate (21) and lead screw two (732) provided on the other connecting plate (21).

2. The adjustable subway construction tunnel support device according to claim 1, characterized in that: A limiting rod (71) is fixedly installed between the connecting plates (21). A moving block (72) is sleeved between the first lead screw (731), the second lead screw (732), and the limiting rod (71). A support (721) is fixedly installed on the moving block (72). A top support plate (5) is fixedly installed on the top of a pair of support plates (4).

3. The adjustable subway construction tunnel support device according to claim 2, characterized in that: The support (721) is rotatably provided with a connecting rod (61), and a side support plate (6) is fixedly installed on the connecting rod (61). The side support plate (6) is hinged to both sides of the top support plate (5).

4. An adjustable subway construction tunnel support device according to any one of claims 1-3, characterized in that: A drive motor (41) is fixedly installed on one of the support plates (4). The output end of the drive motor (41) passes through the support plate (4) and is fixedly installed with a bevel gear (411). A bevel gear (733) is fixedly installed at one end of the lead screw (731). The bevel gear (411) and the bevel gear (733) mesh with each other.

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