Tunnel construction modular span telescopic trestle

Abstract

The utility model relates to a tunnel construction trestle, the utility model discloses a tunnel construction modularization span telescopic trestle for solving the problem that the existing fixed span trestle construction range is small, limits construction progress, the trestle includes trestle, telescopic bridge, front bridge, bridge approach, telescopic bridge track, telescopic bridge walking mechanism, driving arrangement, supporting wheel axle and rear bridge, and the both ends of trestle are equipped with support leg, and the telescopic bridge track is set up on the trestle pavement, the telescopic bridge is moved on the track through walking mechanism and driving arrangement, and the front end is equipped with the front bridge support ground, and the rear end is hinged with the trestle pavement through the bridge approach of oil cylinder control, and the continuous bridge pavement is ensured, and the supporting wheel axle supports telescopic bridge in the track front end. Its core lies in the modularization telescopic design, makes trestle foundation span such as 24 meters and can flexibly extend to 36 meters, can expand single construction coverage range, reduces trestle move frequency, adapts tunnel dynamic construction demand, effectively promotes construction efficiency, security and quality.

Description

Technical Field

[0001] This utility model relates to tunnel construction trestle bridges, and more particularly to a modular, telescopic trestle bridge for tunnel construction. Background Technology

[0002] Currently, trestle bridges are used for transporting vehicles during ground construction. The most commonly used large-span trestle bridges in existing tunnels are 24m trestle bridges. However, because tunnel construction is dynamic and the construction length continuously increases, the scope of a typical construction section is determined by the trestle bridge length. During the construction of a section, the length of the large-span trestle bridge, such as a 24m trestle bridge, limits the construction area. When new construction ground extends beyond the existing area, the construction of a section is considered complete. Furthermore, the existing trestle bridge span limits the construction range and cannot meet the requirements for different site distances and safety spacing, thus affecting the construction progress. In view of these reasons, a modular, telescopic trestle bridge for tunnel construction is proposed. Utility Model Content

[0003] The purpose of this invention is to overcome the limitation imposed by existing large-span trestle bridges in a tunnel construction section, which restrict the construction span and hinder the progress of construction due to the safety spacing requirements of different construction sites. Through reasonable design, this invention provides a modular, telescopic trestle bridge for tunnel construction. This telescopic trestle bridge expands the construction area and increases construction flexibility. Based on a 24-meter span trestle bridge, while ensuring safe construction, the telescopic bridge can extend the construction span to 36 meters, increasing the span of the construction section, expanding the coverage area of ​​a single construction operation, reducing the frequency of trestle bridge relocation, adapting to the dynamic construction needs of the tunnel, effectively improving construction efficiency, and accelerating the construction progress.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a modular span telescopic trestle for tunnel construction, comprising: a trestle, a telescopic bridge, a front approach bridge, a bridge deck approach bridge, a trestle surface, telescopic bridge tracks, a telescopic bridge traveling mechanism, a drive device, a support roller axle, and a rear approach bridge; a pair of support legs are provided at both ends of the trestle, a trestle surface is provided on the trestle, a rear approach bridge is provided at the rear end of the trestle surface, a telescopic bridge is provided at the front end of the trestle, and a pair of telescopic bridge tracks are provided between the two sides of the telescopic bridge and the trestle surface, the pair of telescopic bridge tracks being used for the telescopic movement of the telescopic bridge.

[0005] A pair of telescopic bridge traveling mechanisms are installed between the rear end of the telescopic bridge and a pair of telescopic bridge tracks. Each of the pair of telescopic bridge traveling mechanisms has a drive device at one end. A support roller axle is installed at the front end of the telescopic bridge tracks to support the telescopic bridge above.

[0006] The front end of the telescopic bridge is set as a front approach bridge, which is used for ground support; a bridge deck approach bridge is set between the rear end of the telescopic bridge and the trestle surface; one end of the bridge deck approach bridge is connected to the telescopic bridge by a shaft, and a hydraulic cylinder is set between the middle of the lower part of the bridge deck approach bridge and the rear end of the telescopic bridge. The hydraulic cylinder is used for the rotation and lifting of the bridge deck approach bridge, and the other end of the bridge deck approach bridge is used to support the trestle surface.

[0007] Beneficial effects: The telescopic trestle of this utility model expands the construction range and increases construction flexibility. Based on a trestle with a span of 24 meters, under the condition of ensuring safe construction, the telescopic bridge can extend the construction span to 36 meters, increasing the span of the construction section, expanding the coverage of a single construction, reducing the frequency of trestle relocation, adapting to the dynamic construction needs of the tunnel, effectively improving construction efficiency, and accelerating the construction progress. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings:

[0009] Figure 1 This is a schematic diagram of the overall assembly structure;

[0010] Figure 2 yes Figure 1 A partial structural diagram of the front end of the front approach bridge;

[0011] Figure 3 yes Figure 1 A schematic diagram of a partial structure at the rear end of a telescopic bridge;

[0012] Figure 4 yes Figure 1 A schematic diagram of the telescopic bridge in its extended state;

[0013] Figure 5 yes Figure 1 A schematic diagram of the front-end partial structure;

[0014] Figure 6 yes Figure 5 A top-view schematic diagram of a partial structure;

[0015] Figure 1 , 2 1. Among 3, 4, 5, and 6: 1. Trench bridge; 2. Telescopic bridge; 3. Front approach bridge; 4. Bridge deck approach bridge; 5. Trench bridge deck; 6. Telescopic bridge track; 7. Telescopic bridge traveling mechanism; 7-1. Drive device; 8. Support roller axle; 9. Rear approach bridge. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] The trestle 1 has a pair of supporting legs at each end. The trestle surface 5 is set on the top of the trestle 1. The rear end of the trestle surface 5 is set with a rear approach bridge 9. The telescopic bridge 2 is set on the front end of the trestle surface 5. A pair of telescopic bridge tracks 6 are set between the two sides of the telescopic bridge 2 and the trestle surface 5. The pair of telescopic bridge tracks 6 are used for the telescopic movement of the telescopic bridge 2.

[0018] A pair of telescopic bridge traveling mechanisms 7 are set between the rear end of the telescopic bridge 2 and a pair of telescopic bridge tracks 6. A drive device 7-1 is set at one end of each pair of telescopic bridge traveling mechanisms 7. A support roller shaft 8 is set at the front end of the telescopic bridge track 6. The support roller shaft 8 is used to support the telescopic bridge 2 above.

[0019] The front end of the telescopic bridge 2 is set as the front approach bridge 3, and the front end of the front approach bridge 3 is used for ground support; the rear end of the telescopic bridge 2 is set between the bridge deck approach bridge 4 and the trestle surface 5; one end of the bridge deck approach bridge 4 is connected to the telescopic bridge 2 by a shaft, and a hydraulic cylinder is set between the middle of the lower part of the bridge deck approach bridge 4 and the rear end of the telescopic bridge 2. The hydraulic cylinder is used for the rotation and lifting of the bridge deck approach bridge 4, and the other end of the bridge deck approach bridge 4 is used to support the trestle surface 5.

Claims

1. A tunnel construction modular span telescopic trestle, comprising a trestle (1), a telescopic bridge (2), a front approach bridge (3), a bridge deck approach (4), a trestle deck (5), a telescopic bridge track (6), a telescopic bridge walking mechanism (7), a driving device (7-1), a roller shaft (8), and a rear approach bridge (9); characterized in that: The trestle (1) has a pair of supporting legs at both ends. The trestle surface (5) is set on the trestle (1). The rear end of the trestle surface (5) is set with a rear approach bridge (9). The telescopic bridge (2) is set on the front end of the trestle surface (5). A pair of telescopic bridge tracks (6) are set between the two sides of the telescopic bridge (2) and the trestle surface (5). The pair of telescopic bridge tracks (6) are used for the telescopic movement of the telescopic bridge (2). ​ 2. A modular span telescopic trestle bridge for tunnel construction according to claim 1: characterized in that: A pair of telescopic bridge walking mechanisms (7) are set between the rear end of the telescopic bridge (2) and a pair of telescopic bridge tracks (6). A drive device (7-1) is set at one end of each pair of telescopic bridge walking mechanisms (7). A support roller shaft (8) is set at the front end of the telescopic bridge track (6). The support roller shaft (8) is used to support the telescopic bridge (2) above.

3. A modular span telescopic trestle bridge for tunnel construction according to claim 1: characterized in that: The front end of the telescopic bridge (2) is set as the front approach bridge (3), and the front end of the front approach bridge (3) is used for ground support; the rear end of the telescopic bridge (2) is set between the bridge deck approach bridge (4) and the trestle surface (5); one end of the bridge deck approach bridge (4) is set as the shaft connection between the telescopic bridge (2), and the middle part of the lower part of the bridge deck approach bridge (4) is set between the rear end of the telescopic bridge (2) and the rear end of the telescopic bridge (2). The hydraulic cylinder is used for the rotation and lifting of the bridge deck approach bridge (4), and the other end of the bridge deck approach bridge (4) is used to support the trestle surface (5).

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