Steel arch for tunnel supporting

Abstract

The utility model relates to the technical field of steel arches, in particular to a steel arch for tunnel supporting, which comprises two curved steel frames and two vertical steel frames, two moving devices are arranged at the lower ends of the two vertical steel frames, and an auxiliary device is jointly arranged between the two vertical steel frames. First connecting bases are arranged at the front ends and the rear ends of the two vertical steel frames correspondingly, telescopic supporting rods are movably installed in the four first connecting bases through movable shaft pins correspondingly, and fixing bases are movably installed at the lower ends of the four telescopic supporting rods through movable shaft pins correspondingly. And fixing bolts are mounted at the front parts and the rear parts of the upper ends of the four fixing seats in a penetrating and threaded manner. According to the steel arch for tunnel supporting, the vertical steel frame below the steel arch can be flexibly and finely adjusted conveniently, more labor is saved in the installation process, the installation efficiency is improved, installation is convenient, and meanwhile the overall stability is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel arch frames, and particularly relates to a steel arch frame for tunnel support. Background Technique

[0002] The steel arch frame support structure is a protection structure widely used in the construction of underground projects such as tunnels. It mainly uses steel materials such as I-shaped steel or U-shaped steel to first perform a bending process and then a connection process to form a steel arch frame, making it an important support structure for underground engineering rock strata, soil, etc. It can also form a composite support with bolts, shotcrete, and steel mesh.

[0003] The existing steel arch frame for tunnel support has insufficient flexibility during use. It is not convenient to flexibly move the steel arch frame during installation, and it is inconvenient to finely adjust the position during installation. Therefore, the working efficiency is relatively low, which affects the subsequent construction process. Therefore, we introduce a new steel arch frame for tunnel support. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a steel arch frame for tunnel support, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A steel arch frame for tunnel support includes a curved steel frame and vertical steel frames. There are two vertical steel frames. Two moving devices are provided at the lower ends of the two vertical steel frames. An auxiliary device is commonly arranged between the two vertical steel frames. First connecting seats are arranged at the front and rear ends of the two vertical steel frames. Telescopic support rods are movably installed inside the four first connecting seats through movable shaft pins. The lower ends of the four telescopic support rods are movably installed with fixed seats through movable shaft pins. Fixing bolts are inserted and threadedly installed at the front and rear upper ends of the four fixed seats. Fixed plates are arranged on the opposite surfaces of the two vertical steel frames and the curved steel frame. Screws are commonly inserted and threadedly installed between adjacent two fixed plates. Nuts are threadedly installed on the upper and lower outer surfaces of the four screws.

[0007] Preferably, the moving device includes a mounting plate. Two moving wheels are arranged at the lower end of the mounting plate. A first hydraulic cylinder is fixedly installed through the upper end of the mounting plate. The output end of the first hydraulic cylinder is fixedly installed with a bottom plate. Eight ground insertion cones are arranged at the lower end of the bottom plate.

[0008] Preferably, the mounting plate is fixedly installed on the lower outer surface of the vertical steel frame.

[0009] By adopting the above technical solution, it is convenient to install and fix the mounting plate.

[0010] Preferably, the two moving wheels and the eight ground-inserting cones do not contact each other.

[0011] By adopting the above technical solution: the interference between the moving wheels and the eight ground-inserting cones is avoided.

[0012] Preferably, the auxiliary device includes a connecting column. An electric motor is fixedly installed in the left inner part of the connecting column through an installation groove. The output end of the electric motor is fixedly installed with a bidirectional lead screw. Driven blocks are arranged on the left outer surface and the right outer surface of the bidirectional lead screw. The upper ends of the two driven blocks are fixedly installed with second hydraulic cylinders. The output ends of the two second hydraulic cylinders are fixedly installed with support plates.

[0013] By adopting the above technical solution: the cooperation of the electric motor and the bidirectional lead screw can adjust the position between the two driven blocks.

[0014] Preferably, the two second hydraulic cylinders are both arranged obliquely.

[0015] By adopting the above technical solution: support forces in different directions can be provided.

[0016] Preferably, the outer surfaces of the two support plates are respectively in close contact with the left inner surface and the right inner surface of the curved steel frame.

[0017] By adopting the above technical solution: the support plates can provide stable support forces for the curved steel frame.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. In the utility model, the two vertical steel frames can be moved to the designated positions. Through the four moving wheels, it is convenient to finely adjust the positions of the two vertical steel frames. After being placed, the two first hydraulic cylinders are respectively opened through the controller. When the output ends of the two first hydraulic cylinders extend, the bottom plate is pushed downward. The bottom plate will drive the ground-inserting cones to approach the ground and insert into the ground, thereby enhancing the overall stability and preventing the problems of overall sliding or tipping. The angles of the four telescopic support rods can be adjusted respectively through the movable axles. After adjustment, the four fixed seats are respectively in contact with the ground, and the four telescopic support rods with adjusted angles can be angle-fixed through the fixing bolts, further enhancing the overall stability;

[0020] 2. In the utility model, the electric motor is turned on through the controller. The electric motor drives the bidirectional lead screw at the output end to rotate, thereby driving the two driven blocks to move towards or away from each other. After adjusting to a certain position, the two second hydraulic cylinders are opened through the controller, thereby driving the two support plates to be in close contact with the inner surface of the curved steel frame, and further improving the stability and load-bearing capacity of the entire structure. Description of the Drawings

[0021] Figure 1 This is the overall structural schematic diagram of a steel arch for tunnel support in the present utility model;

[0022] Figure 2 This is the partial structural schematic diagram of the curved steel frame and the vertical steel frame of a steel arch for tunnel support in the present utility model;

[0023] Figure 3 This is the overall structural schematic diagram of the moving device of a steel arch for tunnel support in the present utility model;

[0024] Figure 4 This is the overall structural schematic diagram of the auxiliary device of a steel arch for tunnel support in the present utility model.

[0025] In the figure: 1, curved steel frame; 2, vertical steel frame; 3, moving device; 31, mounting plate; 32, moving wheel; 33, first hydraulic cylinder; 34, bottom plate; 35, ground plug; 4, auxiliary device; 41, connecting column; 42, motor; 43, bidirectional lead screw; 44, driving block; 45, second hydraulic cylinder; 46, support plate; 5, first connecting seat; 6, telescopic support rod; 7, fixed seat; 8, fixing bolt; 9, fixing plate; 10, screw; 11, nut. Specific embodiments

[0026] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0030] A steel arch for tunnel support, comprising a curved steel frame 1 and a vertical steel frame 2. There are two vertical steel frames 2. Two moving devices 3 are provided at the lower ends of the two vertical steel frames 2. An auxiliary device 4 is jointly arranged between the two vertical steel frames 2. First connecting seats 5 are arranged at the front and rear ends of the two vertical steel frames 2. Telescopic support rods 6 are movably installed inside the four first connecting seats 5 through movable axles. Fixed seats 7 are movably installed at the lower ends of the four telescopic support rods 6 through movable axles. Fixing bolts 8 are inserted and threadedly installed at the front and rear upper parts of the four fixed seats 7. Fixing plates 9 are arranged on the opposite surfaces of the two vertical steel frames 2 and the curved steel frame 1. Screws 10 are jointly inserted and threadedly installed between adjacent two fixing plates 9. Nuts 11 are threadedly installed on the upper and lower outer surfaces of the four screws 10.

[0031] In this embodiment, the moving device 3 includes a mounting plate 31. Two moving wheels 32 are arranged at the lower end of the mounting plate 31. A first hydraulic cylinder 33 is inserted and fixedly installed at the upper end of the mounting plate 31. The output end of the first hydraulic cylinder 33 is fixedly installed with a bottom plate 34. Eight ground insertion cones 35 are arranged at the lower end of the bottom plate 34. The mounting plate 31 is fixedly installed on the lower outer surface of the vertical steel frame 2. There is no contact between the two moving wheels 32 and the eight ground insertion cones 35.

[0032] Through the above solution: when the whole device needs to be moved, the moving wheels 32 are in contact with the ground, and the whole can be moved in position. When the whole needs to be fixed, the first hydraulic cylinder 33 starts to work. When the output end of the first hydraulic cylinder 33 extends, it will push the bottom plate 34 downward. The bottom plate 34 will drive the ground insertion cones 35 to approach the ground and insert into the ground, thereby enhancing the overall stability and preventing it from sliding or tipping over.

[0033] In this embodiment, the auxiliary device 4 includes a connecting column 41. A motor 42 is fixedly installed in the left inner part of the connecting column 41 through a mounting groove. The output end of the motor 42 is fixedly installed with a bidirectional lead screw 43. Driving blocks 44 are arranged on the left and right outer surfaces of the bidirectional lead screw 43. Second hydraulic cylinders 45 are fixedly installed at the upper ends of the two driving blocks 44. The output ends of the two second hydraulic cylinders 45 are fixedly installed with support plates 46. The two second hydraulic cylinders 45 are both inclined. The outer surfaces of the two support plates 46 are closely attached to the left and right inner surfaces of the curved steel frame 1 respectively.

[0034] Through the above solution: when the motor 42 is powered on and running, the bidirectional lead screw 43 at its output end starts to rotate. The driving blocks 44 on the left and right parts of the outer surface can move towards or away from each other according to the rotation direction of the bidirectional lead screw 43. The second hydraulic cylinders 45 fixedly installed at the upper ends of the driving blocks 44 will also change their positions as the driving blocks 44 move. The two inclined second hydraulic cylinders 45 can provide supporting forces in both the horizontal and vertical directions. When the two second hydraulic cylinders 45 are activated, they can drive the two support plates 46 to closely fit the inner surface of the curved steel frame 1, thereby improving the stability and load-bearing capacity of the entire structure.

[0035] It should be noted that the present utility model is a steel arch frame for tunnel support. During use, first, the two vertical steel frames 2 can be moved to the designated position. The positions of the two vertical steel frames 2 can be finely adjusted and placed properly through the four moving wheels 32. By respectively opening the two first hydraulic cylinders 33 through the controller, when the output ends of the two first hydraulic cylinders 33 extend, the bottom plate 34 is pushed downward. The bottom plate 34 will drive the ground anchor 35 to approach the ground and insert into the ground, thereby enhancing the overall stability and preventing problems such as overall sliding or tipping. The angles of the four telescopic support rods 6 can be adjusted respectively through the movable shaft pins. After adjustment, the four fixed seats 7 are respectively brought into contact with the ground, and the four telescopic support rods 6 with adjusted angles can be angle-fixed through the fixing bolts 8, further enhancing the overall stability. Then, the curved steel frame 1 is lifted by a lifting device and its lower left and right parts are respectively aligned with the upper ends of the two vertical steel frames 2. The two vertical steel frames 2 and the curved steel frame 1 can be fixed through the fixing plate 9, the screw 10, and the nut 11. After fixation, the motor 42 is turned on through the controller. The motor 42 drives the bidirectional lead screw 43 at its output end to rotate, thereby driving the two driving blocks 44 to move towards or away from each other. After adjusting to a certain position, the two second hydraulic cylinders 45 are turned on through the controller, thereby driving the two support plates 46 to closely fit the inner surface of the curved steel frame 1, thereby improving the stability and load-bearing capacity of the entire structure.

[0036] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A steel arch frame for tunnel support, comprising a curved steel frame (1) and a vertical steel frame (2), characterized in that: The vertical steel frames (2) are each provided with two, the lower ends of the two vertical steel frames (2) are each provided with two moving devices (3), an auxiliary device (4) is commonly provided between the two vertical steel frames (2), the front ends and rear ends of the two vertical steel frames (2) are each provided with a first connecting seat (5), the interiors of the four first connecting seats (5) are each provided with a telescopic support rod (6) movably mounted via a movable axle pin, the lower ends of the four telescopic support rods (6) are each provided with a fixing seat (7) movably mounted via a movable axle pin, the upper front ends and the upper rear ends of the four fixing seats (7) are each provided with a fixing bolt (8) threadedly mounted, the opposing surfaces of the two vertical steel frames (2) and the curved steel frame (1) are each provided with a fixing plate (9), a screw rod (10) threadedly mounted between two adjacent fixing plates (9), and nuts (11) are threadedly mounted on the upper and lower parts of the outer surfaces of the four screw rods (10); The moving device (3) comprises a mounting plate (31), two moving wheels (32) are arranged at the lower end of the mounting plate (31), a first hydraulic cylinder (33) is inserted and fixedly installed at the upper end of the mounting plate (31), a bottom plate (34) is fixedly installed at the output end of the first hydraulic cylinder (33), and eight ground cones (35) are arranged at the lower end of the bottom plate (34).

2. The steel arch frame for tunnel support according to claim 1, characterized in that: The mounting plate (31) is fixedly mounted on the lower portion of the outer surface of the vertical steel frame (2).

3. The steel arch frame for tunnel support according to claim 1, characterized in that: The two moving wheels (32) and the eight ground-inserting cones (35) do not contact each other.

4. The steel arch frame for tunnel support according to claim 1, characterized in that: The auxiliary device (4) comprises a connecting column (41), a motor (42) is fixedly mounted on the inner left portion of the connecting column (41) through a mounting groove, a bidirectional screw rod (43) is fixedly mounted on the output end of the motor (42), driving blocks (44) are provided on the left and right outer surfaces of the bidirectional screw rod (43), a second hydraulic cylinder (45) is fixedly mounted on the upper ends of the two driving blocks (44), and a support plate (46) is fixedly mounted on the output ends of the two second hydraulic cylinders (45).

5. The steel arch frame for tunnel support according to claim 4, characterized in that: The two second hydraulic cylinders (45) are both arranged in an inclined manner.

6. The steel arch frame for tunnel support according to claim 5, characterized in that: The outer surfaces of the two support plates (46) are respectively tightly fitted with the left part and the right part of the inner surface of the curved steel frame (1).

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