Efficient extending posture adjusting movable trestle

Abstract

The invention discloses an efficient extending posture adjusting movable trestle. To overcome the defects that the existing tunnel construction span is small, moving is difficult and the efficiency is low, each row of main bridges of the efficient extending posture adjusting movable trestle comprises main bridge front sections and main bridge rear sections. Main bridge connecting mechanisms are arranged on the upper portions of the connecting positions of the main bridge front sections and the main bridge rear sections, posture adjusting arms are arranged on the lower portions of the connecting positions of the main bridge front sections and the main bridge rear sections, and the posture adjusting arms are connected with arm oil cylinders. The front portions of the main bridge rear sections are provided with long supporting feet and short supporting feet, and the long supporting feet and the short supporting feet are connected with long-foot oil cylinders and short-foot oil cylinders correspondingly. Movable supports are arranged between the two rows of main bridges. The efficient extending posture adjusting movable trestle is used for tunnel construction, large span line production and continuous construction can be achieved, automatic architecture moving and posture automatic adjusting and controlling are achieved, installation and moving are easy, moving is flexible, architecture is rapid, the efficiency is high, the structure is compact, the occupied area is small, the manufacturing and using cost is low, and the efficient extending posture adjusting movable trestle is particularly suitable for construction of a single track tunnel with a narrow space under a complex geology condition.

Description

technical field [0001] The invention relates to a trestle used for tunnel construction, in particular to a high-efficiency extended state-adjustable mobile trestle. Background technique [0002] Tunnel construction is limited to narrow space, difficult installation of construction equipment, complex operation links, many safety hazards, and difficulty in improving efficiency, especially in single-track tunnels. [0003] At present, the construction level of the tunnel is getting higher and higher. In order to ensure the integrity of the tunnel inverted arch construction and improve the bearing capacity, flow operation and continuous construction are required. The one-time construction length of the inverted arch must reach more than 24 meters. [0004] Existing tunnel construction not only requires large-span displacement and continuous construction of large-span flowing water, but also needs to take into account the excavation and slag construction at the bottom of the inve...

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Problems solved by technology

[0006] The disadvantages of existing trestle bridges are: small span (usually construction length 6-12 meters), short construction length, difficult displacement, unable to realize 24-meter long-span flow operation and continuous construction

[0007] Secondly, although the existing trestle bridge with truss on both sides and a middle channel structure can increase the span of the main bridge, so that the construction length can reach 16 meters, but because the truss structure is used, the width of the trestle bridge increases, making the already narrow tunnel The space is narrower and the construction difficulty is increased. It is only suitable for double-track tunnels and cannot adapt to the increasing number of single-track tunnels under complex geological conditions.

[0008] In addition, in order to take into account the excavation and slag construction at the bottom of the inverted arch, the existing trestle bridge needs to add trestle pedals to increase the total length of the trestle bridge by at least a dozen meters. When cleaning the bottom slag, it is necessary to retreat to the filled surface of the inverted arch. On the one hand, it is very troublesome to fall back, on the other hand, the follow-up construction is not allowed to be too far apart, which will cause mutual interference

[0009] There is no good solution for the above-mentioned shortcomings, which greatly affects the application of trestle bridges

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