Tunnel tunneling joist structure

Abstract

The utility model discloses a tunnel excavation joist structure which comprises a mounting base, a sliding plate mechanism is slidably connected to the interior of the mounting base, a limiting frame is fixedly connected to the outer surface of the top of the sliding plate mechanism, a sliding rod is slidably connected to the interior of the limiting frame, and a joist supporting plate is arranged at the end, away from the limiting frame, of the sliding rod. A second pin shaft is arranged at the end, away from the joist supporting plate, of the limiting frame, the limiting frame is fixedly connected with a joist telescopic oil cylinder through the second pin shaft, and the output end of the joist telescopic oil cylinder is fixedly connected to the outer surface of the sliding rod. Two sets of first pin shafts are arranged on the outer surface of the end, away from the joist supporting plate, of the mounting base, and the mounting base is fixedly connected with a sliding plate pushing oil cylinder through the first pin shafts. According to the tunnel excavation joist structure, the sliding plate pushing oil cylinder and the joist telescopic oil cylinder can be operated to transport the arched steel beam, so that the purposes of reducing the labor intensity of workers and saving physical power are achieved, the time for exposing the arched steel beam in a dangerous environment is greatly shortened, and the safety of Shu butterfly tunnel construction is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel excavation support beam technology, and in particular to a tunnel excavation support beam structure. Background Technology

[0002] In coal mines, the support of arched roadways is usually achieved by manually connecting three or four sections of arched steel beams to support the roof and sidewalls of the roadway. When installing arched steel beams, manual handling is usually used for installation. However, the heavy weight of arched steel beams (such as U-shaped steel and I-beams) makes manual installation physically demanding. At the same time, manual handling and erection can easily lead to fatigue, which in turn makes the installation speed of steel beams slow.

[0003] Meanwhile, when installing arched steel beams, workers need to operate under temporary support because the top structure of the roadway is not stable. Temporary support can only temporarily support the top and sides of the roadway. However, due to the long construction and support time of manually handling the arched steel beams, the service life of the temporary support is extended. During use, the load of the temporary support may change due to external factors (such as weathering, rainwater, etc.), which increases the risk of roof collapse and sidewall spalling in the roadway.

[0004] In response to the above situation, we propose a tunnel excavation support beam structure. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a tunnel excavation support beam structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tunnel excavation support beam structure includes an installation base, a sliding plate mechanism is slidably connected inside the installation base, a limit frame is fixedly connected to the top outer surface of the sliding plate mechanism, a sliding rod is slidably connected inside the limit frame, and a support beam support plate is provided at the end of the sliding rod away from the limit frame.

[0008] The limiting frame is provided with a second pin at one end away from the support beam plate. The limiting frame is fixedly connected to the support beam telescopic cylinder through the second pin. The output end of the support beam telescopic cylinder is fixedly connected to the outer surface of the sliding rod.

[0009] Two sets of first pins are symmetrically arranged on the outer surface of the mounting base away from the support beam and the support plate. The mounting base is fixedly connected to the slide plate pushing cylinder through the first pins.

[0010] Preferably, the two sets of sliding plate pushing cylinders are symmetrically arranged on both sides of the limiting frame.

[0011] Preferably, a fourth pin is provided on the side of the sliding rod away from the second pin, and the sliding rod is fixedly connected to the support beam plate through the fourth pin.

[0012] Preferably, the output end of the slide plate pushing cylinder is provided with a third pin, and the output end of the slide plate pushing cylinder is fixedly connected to the outer surface of the slide plate mechanism through the third pin.

[0013] Preferably, mounting holes are evenly spaced through both sides of the mounting base.

[0014] Preferably, the top of the mounting base is provided with evenly spaced arched steel beams, which are internally engaged with the support beams and plates.

[0015] The tunnel excavation support beam structure proposed in this utility model has the following advantages: During tunnel construction, the user can place the arched steel beam on top of the support beam plate and operate the sliding plate pushing cylinder and the support beam telescopic cylinder to transport the arched steel beam, thereby reducing the labor intensity of workers, saving physical strength, greatly shortening the time exposed to dangerous environments, avoiding the disadvantages of the original manual pulling and carrying of heavy loads, greatly shortening the operation time of workers exposed in unsupported tunnels, and greatly improving safety. At the same time, the support beam structure reduces the number of on-site construction personnel and greatly improves work efficiency. Attached Figure Description

[0016] Figure 1 This is an exploded view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall outer surface structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the working state of this utility model in the tunnel.

[0019] In the diagram: 1. Mounting base; 2. Slide plate pushing cylinder; 3. Slide plate mechanism; 4. Support beam telescopic cylinder; 5. Sliding rod; 6. Support beam support plate; 7. First pin; 8. Second pin; 9. Third pin; 10. Fourth pin; 11. Mounting hole; 12. Arched steel beam; 13. Limiting frame. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Referring to 1-3, a tunnel excavation support beam structure includes an installation base (1). The two sides of the installation base 1 are evenly spaced through installation holes 11. The top of the installation base 1 is evenly spaced with arched steel beams 12. The arched steel beams 12 are movably engaged with the support beam support plate 6.

[0023] The mounting base 1 has a sliding plate mechanism 3 internally connected to it. A limit frame 13 is fixedly connected to the top outer surface of the sliding plate mechanism 3. A sliding rod 5 is slidably connected inside the limit frame 13. A support beam plate 6 is provided at the end of the sliding rod 5 away from the limit frame 13. A second pin 8 is provided at the end of the limit frame 13 away from the support beam plate 6. A support beam telescopic cylinder 4 is fixedly connected to the limit frame 13 through the second pin 8. The output end of the support beam telescopic cylinder 4 is fixedly connected to the outer surface of the sliding rod 5. Two sets of first pins 7 are symmetrically arranged on the outer surface of the mounting base 1 away from the support beam plate 6. A sliding plate pushing cylinder 2 is fixedly connected to the mounting base 1 through the first pins 7. The two sets of sliding plate pushing cylinders 2 are symmetrically arranged on both sides of the limit frame 13. A fourth pin 10 is provided on the side of the sliding rod 5 away from the second pin 8. The sliding rod 5 is fixedly connected to the support beam plate 6 through the fourth pin 10. The output end of the slide push cylinder 2 is provided with a third pin 9, and the output end of the slide push cylinder 2 is fixedly connected to the outer surface of the slide mechanism 3 through the third pin 9.

[0024] In summary, during tunnel construction, the user first installs the mounting base 1 on the upper part of the cutting section of the tunneling machine, then places the arched steel beam 12 on top of the support beam plate 6. The user then activates the sliding plate pushing cylinder 2 to drive the sliding plate mechanism 3 to slide inside the mounting base 1. When the installation distance of the arched steel beam 12 is far, the user activates the support beam telescopic cylinder 4 to move the support beam plate 6 to the designated installation position. The user then starts the tunneling machine to move upwards, causing the top of the arched steel beam 12 to fit against the inner wall of the tunnel roof. The user then fixes the arched steel beam 12, thereby achieving the purpose of supporting the roof.

[0025] 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 tunnel excavation support beam structure, comprising an installation base (1), characterized in that, The mounting base (1) is internally slidably connected to a sliding plate mechanism (3), and a limit frame (13) is fixedly connected to the top outer surface of the sliding plate mechanism (3). A sliding rod (5) is slidably connected inside the limit frame (13), and a support beam plate (6) is provided at the end of the sliding rod (5) away from the limit frame (13). The limiting frame (13) is provided with a second pin (8) at one end away from the support beam plate (6). The limiting frame (13) is fixedly connected to the support beam telescopic cylinder (4) through the second pin (8). The output end of the support beam telescopic cylinder (4) is fixedly connected to the outer surface of the sliding rod (5). Two sets of first pins (7) are symmetrically arranged on the outer surface of the mounting base (1) away from the support beam plate (6). The mounting base (1) is fixedly connected to the slide plate pushing cylinder (2) through the first pins (7).

2. The tunnel excavation support beam structure according to claim 1, characterized in that, The two sets of sliding plate pushing cylinders (2) are symmetrically arranged on both sides of the limiting frame (13).

3. The tunnel excavation support beam structure according to claim 1, characterized in that, The sliding rod (5) is provided with a fourth pin (10) on the side away from the second pin (8), and the sliding rod (5) is fixedly connected to the support beam plate (6) through the fourth pin (10).

4. The tunnel excavation support beam structure according to claim 1, characterized in that, The output end of the sliding plate pushing cylinder (2) is provided with a third pin (9), and the output end of the sliding plate pushing cylinder (2) is fixedly connected to the outer surface of the sliding plate mechanism (3) through the third pin (9).

5. A tunnel excavation support beam structure according to claim 1, characterized in that, The mounting base (1) has mounting holes (11) evenly spaced through both sides.

6. The tunnel excavation support beam structure according to claim 1, characterized in that, The top of the mounting base (1) is evenly spaced with arched steel beams (12), which are movably engaged with the inside of the support beam plate (6).

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