Tunnel supporting device

Abstract

The utility model relates to the technical field of tunnel supporting, and discloses a tunnel supporting device which comprises two stand columns, the two stand columns are connected through a locking mechanism and a bearing plate, the top end of the bearing plate is fixedly connected with two hydraulic rods, and the two hydraulic rods are fixedly connected through a connecting plate. The top ends of the two hydraulic rods are fixedly connected with the supporting plate, the top end of the bearing plate is provided with an auxiliary support capable of flexibly adjusting fulcrums, the locking mechanism comprises arc-shaped lugs, the two arc-shaped lugs are arranged on the outer side of the stand column, one of the two arc-shaped lugs is fixed to the bearing plate, and the other of the two arc-shaped lugs is fixed to the supporting plate. According to the tunnel supporting device, the auxiliary support is arranged, the supporting point is flexibly adjusted through the auxiliary support, the tunnel supporting device can adapt to the internal environment of a tunnel, powerful supporting is formed, the whole device is supported in an auxiliary mode, and the stability of the device is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of tunnel support technology, specifically a tunnel support device. Background Technology

[0002] In recent years, with the rapid development of tunnel engineering construction, the stability, adjustability, and ease of installation of tunnel support devices have become core issues for construction safety and efficiency. Traditional tunnel support devices mostly adopt rigid frame structures, achieving the jacking function through a combination of fixed columns and beams. However, most existing devices lack auxiliary load-bearing structures, and hydraulic rods are prone to lateral bending deformation when subjected to long-term unidirectional jacking pressure, leading to hydraulic system seal failure or support plate displacement, posing safety hazards. Therefore, a new tunnel support device has been proposed to solve the above problems. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] The purpose of this utility model is to solve the problem that most existing devices lack auxiliary force-bearing structures, and the hydraulic rod is prone to lateral bending deformation when subjected to unidirectional top pressure for a long time, which leads to the failure of hydraulic system seals or the displacement of support plates, posing safety hazards. Therefore, a tunnel support device is proposed.

[0005] (II) Technical Solution

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A tunnel support device includes two columns, each of which is connected to a support plate via a locking mechanism. Two hydraulic rods are fixedly connected to the top of the support plate, and the two hydraulic rods are fixedly connected to each other via a connecting plate. The top of each hydraulic rod is fixedly connected to the support plate. An auxiliary bracket with a flexibly adjustable fulcrum is provided at the top of the support plate.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Preferably, the locking mechanism includes arc-shaped lugs, and two arc-shaped lugs are provided on the outer side of the column. One of the two arc-shaped lugs is fixed to the support plate. Two hollow threaded portions are provided on each of the two arc-shaped lugs. The inner thread of one of the two adjacent hollow threaded portions is connected to a bolt extending to the inner side of the other hollow threaded portion. The bolt is threaded to the inner side of the other hollow threaded portion.

[0010] Preferably, the auxiliary support includes a fixed shaft, the top of the support plate is fixedly connected to the fixed shaft, the outer side of the fixed shaft is rotatably limited by a first support, the right end of the first support is hinged to a second support, and the inner side of the second support is fixedly connected to an auxiliary column.

[0011] Preferably, reinforcing rods are fixedly connected to the inner sides of both the first bracket and the second bracket.

[0012] Preferably, friction pads are fixedly connected to the bottom ends of both columns.

[0013] Preferably, the top surface of the support plate is adapted to the tunnel roof wall.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0016] This invention, by setting up an auxiliary support and flexibly adjusting the fulcrum, can adapt to the internal environment of the tunnel, forming a strong support, thereby providing auxiliary support for the entire device and enhancing its stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the locking mechanism of this utility model.

[0019] In the diagram: 1. Column; 2. Locking mechanism; 21. Arc-shaped lug; 22. Hollow threaded part; 23. Bolt; 3. Support plate; 4. Hydraulic rod; 5. Connecting plate; 6. Support plate; 7. Auxiliary bracket; 71. Fixed shaft; 72. First bracket; 73. Second bracket; 74. Auxiliary column; 8. Reinforcing rod; 9. Friction pad. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the embodiments, by Figure 1 and Figure 2 A tunnel support device is provided, comprising two columns 1, both columns 1 being connected to a support plate 3 via a locking mechanism 2. Two hydraulic rods 4 are fixedly connected to the top of the support plate 3, and the two hydraulic rods 4 are fixedly connected to each other via a connecting plate 5. The top of each hydraulic rod 4 is fixedly connected to a support plate 6. An auxiliary bracket 7 with a flexibly adjustable fulcrum is provided at the top of the support plate 3.

[0022] With the above setup, the arc-shaped lugs 21 of the support plate 3 are wrapped around the outside of the column 1. Bolts 23 are inserted through the hollow threaded part 22 and symmetrically tightened to clamp the two arc-shaped lugs 21 onto the column 1, thus achieving rapid fixation of the support plate 3. According to the support height requirements, the bolts 23 are loosened to adjust the position of the support plate 3 on the column 1 and then re-locked. Two hydraulic rods 4 are fixed at the top of the support plate 3. The two hydraulic rods 4 are connected laterally using the connecting plate 5 to ensure synchronous extension and contraction. The support plate 6 is installed on the top of the hydraulic rods 4. The fulcrum is then flexibly adjusted using the auxiliary bracket 7 to provide auxiliary support for the entire device and enhance its stability. The two hydraulic rods 4 are started synchronously to drive the support plate 6 to fit tightly against the tunnel roof.

[0023] Reference Figure 1 and Figure 2 The locking mechanism 2 includes an arc-shaped lug 21. Two arc-shaped lugs 21 are provided on the outer side of the column 1. One of the arc-shaped lugs 21 is fixed to the support plate 3. Two hollow threaded portions 22 are provided on each of the two arc-shaped lugs 21. The inner side of one of the two adjacent hollow threaded portions 22 is threaded with a bolt 23 extending to the inner side of the other hollow threaded portion 22. The bolt 23 is threaded to the inner side of the other hollow threaded portion 22.

[0024] With the above structural design, the locking mechanism 2 uses arc-shaped lugs 21 to cooperate with the hollow threaded part 22, and achieves quick clamping of the column 1 and the support plate 3 through symmetrical bolts 23, reducing construction time; the bolts 23 penetrate the double lug design, avoiding the space occupation problem of traditional flange connection, and are suitable for narrow tunnel environments.

[0025] Reference Figure 1 and Figure 2 The auxiliary support 7 includes a fixed shaft 71, the top of the support plate 3 is fixedly connected to the fixed shaft 71, the outer side of the fixed shaft 71 is rotatably limited by a first support 72, the right end of the first support 72 is hinged to a second support 73, and the inner side of the second support 73 is fixedly connected to an auxiliary column 74.

[0026] With the above structural setup, the first bracket 72 on the fixed axis 71 is rotated to expand around the axis of the column 1 to the required angle. Finally, the hinged second bracket 73 is rotated and its extension length is adjusted so that the auxiliary column 74 abuts against the tunnel sidewall. The auxiliary bracket 7 achieves multi-degree-of-freedom adjustment through the fixed axis 71 and the hinge structure, which can dynamically distribute the support force to the local concave or inclined areas of the tunnel top wall and avoid single-point overload of the hydraulic rod 4.

[0027] Reference Figure 1 and Figure 2 Among them, the inner sides of the first bracket 72 and the second bracket 73 are both fixedly connected with reinforcing rods 8;

[0028] With the above structural arrangement, the connection node of the first bracket 72 and the second bracket 73 is fixed by the reinforcing rod 8, which divides the structure into two triangular structures, thereby improving the rigidity of the auxiliary bracket 7.

[0029] Reference Figure 1 and Figure 2 Among them, friction pads 9 are fixedly connected to the bottom ends of the two columns 1;

[0030] The above structural design further increases friction, ensuring the stability of the entire device.

[0031] Reference Figure 1 and Figure 2 The top surface of the support plate 6 is adapted to the tunnel roof wall;

[0032] With the above structural design, the top surface of the support plate 6 is designed as an arc or concave-convex structure that adapts to the height of the tunnel roof surface, which can closely fit the irregular surface of the roof, expand the effective contact area, and avoid the stress concentration problem caused by local suspension in traditional flat plate supports.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[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 support device, characterized in that, The utility model provides a kind of adjustable support device, including two stand columns (1), two the stand column (1) between are connected with support plate (3) by locking mechanism (2), the top of support plate (3) is fixedly connected with two hydraulic rams (4), two hydraulic rams (4) are fixedly connected by connecting plate (5) between, the top of two hydraulic rams (4) is fixedly connected with support plate (6), the top of support plate (3) is provided with the auxiliary support (7) of flexible adjustment fulcrum.

2. A tunnel support arrangement according to claim 1, characterised in that: The locking mechanism (2) includes an arc-shaped ear (21), the outer side of the stand column (1) is provided with two arc-shaped ears (21), one of the two arc-shaped ears (21) is fixed with the support plate (3), and two arc-shaped ears (21) are provided with two hollow threaded portions (22) on each of them. One of the two adjacent hollow threaded portions (22) is internally threaded with a bolt (23) extending to the inside of the other hollow threaded portion (22), and the bolt (23) is internally threaded with the other hollow threaded portion (22).

3. A tunnel support apparatus according to claim 1, wherein: The auxiliary support (7) includes a fixed shaft (71), the top of the support plate (3) is fixedly connected with the fixed shaft (71), the outer side of the fixed shaft (71) is rotationally limited by a first bracket (72), the right end of the first bracket (72) is hingedly connected with a second bracket (73), and the inner side of the second bracket (73) is fixedly connected with an auxiliary column (74).

4. A tunnel support arrangement according to claim 3, characterised in that: The inner side of the first bracket (72) and the second bracket (73) is fixedly connected with a reinforcing rod (8).

5. A tunnel support arrangement according to claim 3, characterised in that: The bottom of the two stand columns (1) is fixedly connected with a friction pad (9) having a larger contact area than the bottom surface of the stand column (1).

6. A tunnel support apparatus according to claim 1, wherein: The top surface of the support plate (6) is adapted to the top wall of the tunnel.

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