An embedded tunnel inverted arch trestle main body telescopic escape passage

Abstract

The utility model relates to trestle passageway technical field, concretely relates to a kind of embedded tunnel inverted arch trestle main body telescopic escape passage, including passageway outer shell, the inside of passageway outer shell is provided with escape pipe fixed component, the inside of escape pipe fixed component is provided with escape pipe group, escape pipe group is limited by escape pipe fixed component, motor base is fixed in passageway outer shell inside top end, escape pipe drive component is fixed in the bottom end side of motor base by bolt, escape pipe drive component and escape pipe group connection are the movement of escape pipe group Power is provided, when trestle is positioned, escape pipe group can quickly extend, connect excavation working face to the completed, safe inverted arch filling surface, follow along retract, when trestle steps forward, escape pipe group is automatically retracted.

Description

Technical Field

[0001] This utility model relates to the field of trestle bridge technology, specifically to a retractable escape passage in the main body of an embedded tunnel arch trestle bridge. Background Technology

[0002] In tunnel construction, the excavation face is a high-risk area, making it crucial to establish an escape route directly to the safety zone. However, traditional independent escape routes have significant drawbacks: their ends are difficult to reliably connect with the dynamically advancing excavation face, making them prone to blockage in the event of an emergency; furthermore, their frequent installation, dismantling, and transportation severely disrupt normal construction cycles and occupy space. Therefore, a retractable escape route embedded within the main body of the tunnel arch trestle bridge is proposed. Utility Model Content

[0003] In order to solve the technical problems existing in the prior art, the present invention provides a retractable escape passage for the main body of an embedded tunnel arch bridge.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a retractable escape passage for an embedded tunnel arch bridge, comprising a passage shell, a motor base, and an escape tube drive assembly. An escape tube assembly is provided inside the escape tube fixing assembly, and the escape tube assembly is restricted by the escape tube fixing assembly. The motor base is fixed to the top of the passage shell, and the escape tube drive assembly is fixed to one side of the bottom of the motor base by bolts. The escape tube drive assembly is connected to the escape tube assembly to provide power for the movement of the escape tube assembly.

[0005] Preferably, the escape tube fixing assembly includes a fixed base and fixed side supports. The fixed base is welded to the inner bottom of the outer casing of the passage, and the two sets of fixed side supports are respectively welded to both sides of the inner wall of the outer casing of the passage. The ends of the fixed base and the two sets of fixed side supports are all arc-shaped structures, and the ends of the fixed base and the fixed side supports form a discontinuous ring that matches the outer wall of the escape tube assembly.

[0006] Preferably, the fixed side support further includes auxiliary limiting plates, and the two sets of auxiliary limiting plates are respectively welded to the side wall surfaces of the two sets of fixed side supports, with a gap between the two sets of auxiliary limiting plates for the top of the escape tube assembly to pass through.

[0007] Preferably, the escape tube assembly includes an escape tube body, an auxiliary limiting strip, and a rack. The escape tube body is disposed between a fixed base and two sets of fixed side supports. The auxiliary limiting strip is welded to the top of the escape tube body, and the rack is welded to the top of the auxiliary limiting strip.

[0008] Preferably, a vertical angle is formed between the bottom of the rack and the side wall of the auxiliary limiting strip, the end of the auxiliary limiting plate is embedded in the angle, and the auxiliary limiting strip is restricted by the cooperation of two sets of auxiliary limiting plates.

[0009] Preferably, the diameter of the escape tube body is greater than or equal to 800 mm.

[0010] Preferably, the escape tube drive assembly includes a reducer, a drive motor, and a gear. The reducer is fixed to the bottom of the motor mount, the drive motor is mounted on the side of the reducer, the output shaft of the drive motor is connected to the output shaft of the reducer, and the gear is fixed outside the output shaft of the drive motor and meshes with the top of the rack.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The outer shell of the passageway of this utility model is fixed on the trestle and moves in tandem with the trestle. When the trestle moves, the escape tube assembly can retract into the outer shell of the passageway without affecting passage and construction. When the trestle is positioned, the escape tube assembly can quickly extend to connect the excavation working face to the completed and safe invert arch filling surface, and retract along with it. When the trestle moves forward, the escape tube assembly automatically retracts into the main beam cavity. After the trestle is positioned, a command is issued and the motor drives the passageway to extend again in tens of seconds to form a stable escape passageway. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a partial three-dimensional schematic diagram of the present invention;

[0015] Figure 3 This is a three-dimensional structural diagram of the escape tube fixing component of this utility model;

[0016] Figure 4 This is a schematic diagram of the cooperation between the auxiliary limiting plate and the auxiliary limiting strip of this utility model;

[0017] Figure 5 This is a schematic diagram of the escape tube assembly structure of this utility model.

[0018] The numbers in the diagram represent: 1. Outer shell of the passageway; 2. Escape tube fixing assembly; 21. Fixing base; 22. Fixing side support; 221. Auxiliary limiting plate; 3. Escape tube assembly; 31. Escape tube body; 32. Auxiliary limiting strip; 33. Rack; 4. Motor mount; 5. Escape tube drive assembly; 51. Reducer; 52. Drive motor; 53. Gear. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, highlighting the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0020] Example:

[0021] like Figures 1-5 As shown, this utility model provides a retractable escape passage for an embedded tunnel arch bridge, including a passage shell 1, a motor base 4, and an escape tube drive assembly 5. An escape tube fixing assembly 2 is provided inside the passage shell 1, and an escape tube assembly 3 is provided inside the escape tube fixing assembly 2. The escape tube assembly 3 is restricted by the escape tube fixing assembly 2. The motor base 4 is fixed to the top of the passage shell 1. The escape tube drive assembly 5 is fixed to one side of the bottom of the motor base 4 by bolts. The escape tube drive assembly 5 is connected to the escape tube assembly 3 to provide power for the movement of the escape tube assembly 3.

[0022] The escape tube fixing assembly 2 includes a fixing base 21 and a fixing side support 22;

[0023] The fixed base 21 is welded to the bottom of the inner side of the outer casing 1 of the passage. Two sets of fixed side supports 22 are welded to the inner walls of the outer casing 1 of the passage. The ends of the fixed base 21 and the two sets of fixed side supports 22 are arc-shaped structures. The ends of the fixed base 21 and the fixed side supports 22 form a discontinuous ring that fits the outer wall of the escape tube assembly 3. The fixed base 21 and the fixed side supports 22 can completely fit the outer wall of the escape tube assembly 3. The escape tube assembly 3 can be stably installed in the escape tube fixing component 2 under the support of the fixed base 21 and the fixed side supports 22. At the same time, when the escape tube assembly 3 extends, the fixed base 21 and the fixed side supports 22 can cooperate to restrict and fix the escape tube assembly 3, thereby preventing the escape tube assembly 3 from deflecting.

[0024] The escape tube assembly 3 includes an escape tube body 31, an auxiliary limiting strip 32, and a rack 33;

[0025] The escape tube body 31 is set between the fixed base 21 and two sets of fixed side supports 22. The auxiliary limiting strip 32 is welded to the top of the escape tube body 31, and the rack 33 is welded to the top of the auxiliary limiting strip 32. During operation, the escape tube body 31 can be sent out through the cooperation of the rack 33 and the escape tube drive assembly 5. The end of the sent-out escape tube body 31 enters the working surface area. The escape tube body 31 can be used to climb back from the working surface area to the safe area.

[0026] The fixed side support 22 also includes auxiliary limiting plates 221. Two sets of auxiliary limiting plates 221 are welded to the side wall surfaces of the two sets of fixed side supports 22 respectively. A gap is left between the two sets of auxiliary limiting plates 221 for the top of the escape tube assembly 3 to pass through. The bottom of the rack 33 forms a vertical angle with the side wall of the auxiliary limiting strip 32. The end of the auxiliary limiting plate 221 is embedded in the angle. The auxiliary limiting strip 32 is restricted by the cooperation of the two sets of auxiliary limiting plates 221. Under the restriction of the two sets of auxiliary limiting plates 221, the two sets of auxiliary limiting strips 32 always remain in a vertical state. The rack 33 at the top of the auxiliary limiting strip 32 can always maintain a stable meshing state with the gear 53, avoiding meshing slippage due to the deflection of the escape tube body 31.

[0027] The diameter of the escape tube body 31 is greater than or equal to 800mm. A diameter of not less than 800mm can ensure that an adult of normal size can crawl through normally. At the same time, the circular design of the escape tube body 31 can improve its overall pressure resistance.

[0028] The escape tube drive assembly 5 includes a reducer 51, a drive motor 52, and a gear 53;

[0029] The reducer 51 is fixed at the bottom of the motor base 4, the drive motor 52 is mounted on the side of the reducer 51, the output shaft of the drive motor 52 is connected to the output shaft of the reducer 51, the gear 53 is fixed outside the output shaft of the drive motor 52, and the gear 53 meshes with the top of the rack 33. During the extension stage, the reducer 51 drives the drive motor 52 to rotate, the drive motor 52 drives the gear 53 to rotate, and the gear 53 drives the rack 33 to move during the rotation. The rotation direction of the gear 53 determines the movement direction of the rack 33.

[0030] When the tunnel arch trestle needs to move forward, the drive motor 52 reverses and is adjusted by the reducer 51, which drives the gear 53 to mesh with the rack 33 to drive the escape tube body 31 to retract into the outer shell 1 of the channel along the arc track of the fixed base 21 and the fixed side support 22. The movement of the trestle is not affected after the motor stops.

[0031] Once the trestle is positioned, the drive motor 52 rotates forward, and after speed adjustment by the reducer 51, it drives the gear 53 to push the end of the escape tube body 31 to the excavation face, seamlessly connecting with the safety invert arch filling surface. In case of an emergency in the tunnel, the workers on the working face can quickly enter the escape tube body 31 and crawl along the tube to a safe area to complete the evacuation.

[0032] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A retractable escape passage in the main body of an embedded tunnel arch bridge, characterized in that, The system includes a channel housing (1), a motor base (4), and an escape tube drive assembly (5). An escape tube fixing assembly (2) is provided inside the channel housing (1). An escape tube assembly (3) is provided inside the escape tube fixing assembly (2). The escape tube assembly (3) is restricted by the escape tube fixing assembly (2). The motor base (4) is fixed to the top of the inside of the channel housing (1). The escape tube drive assembly (5) is fixed to one side of the bottom end of the motor base (4) by bolts. The escape tube drive assembly (5) is connected to the escape tube assembly (3) to provide power for the movement of the escape tube assembly (3).

2. The retractable escape passage of the main body of the embedded tunnel arch bridge as described in claim 1, characterized in that, The escape tube fixing assembly (2) includes a fixing base (21) and a fixing side support (22). The fixing base (21) is welded to the bottom of the inner side of the channel shell (1). The two sets of fixing side supports (22) are welded to the inner walls of the channel shell (1) respectively. The ends of the fixing base (21) and the two sets of fixing side supports (22) are all arc-shaped structures. The ends of the fixing base (21) and the fixing side supports (22) form a discontinuous ring that matches the outer wall of the escape tube assembly (3).

3. The retractable escape passage of the main body of the embedded tunnel arch bridge as described in claim 2, characterized in that, The fixed side support (22) also includes auxiliary limiting plates (221). The two sets of auxiliary limiting plates (221) are respectively welded to the side wall surfaces of the two sets of fixed side supports (22). A gap is left between the two sets of auxiliary limiting plates (221) for the top of the escape tube assembly (3) to pass through.

4. The retractable escape passage of the main body of the embedded tunnel arch bridge as described in claim 3, characterized in that, The escape tube assembly (3) includes an escape tube body (31), an auxiliary limiting strip (32), and a rack (33). The escape tube body (31) is located between a fixed base (21) and two sets of fixed side supports (22). The auxiliary limiting strip (32) is welded to the top of the escape tube body (31), and the rack (33) is welded to the top of the auxiliary limiting strip (32).

5. The retractable escape passage of the main body of the embedded tunnel arch bridge as described in claim 4, characterized in that, The bottom of the rack (33) forms a vertical angle with the side wall of the auxiliary limiting strip (32), and the end of the auxiliary limiting plate (221) is embedded in the angle. The auxiliary limiting strip (32) is restricted by the cooperation of the two sets of auxiliary limiting plates (221).

6. The retractable escape passage of the main body of the embedded tunnel arch bridge as described in claim 4, characterized in that, The diameter of the escape tube body (31) is greater than or equal to 800 mm.

7. The retractable escape passage of the main body of the embedded tunnel arch bridge as described in claim 1, characterized in that, The escape tube drive assembly (5) includes a reducer (51), a drive motor (52) and a gear (53). The reducer (51) is fixed at the bottom of the motor base (4). The drive motor (52) is mounted on the side of the reducer (51). The output shaft of the drive motor (52) is connected to the output shaft of the reducer (51). The gear (53) is fixed outside the output shaft of the drive motor (52). The gear (53) meshes with the top of the rack (33).

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