Forced centering tool for small-hole-diameter TBM guiding system instrument

Abstract

The utility model discloses a small-hole-diameter TBM guiding system instrument forced centering tool which comprises U-shaped steel, a steel plate and a positioning bolt, one side of the U-shaped steel is vertically and fixedly connected with the front face of the steel plate, the back face of the steel plate is fixedly connected with a wall, the positioning bolt penetrates through a U-shaped groove of the U-shaped steel and is vertically and fixedly connected with the U-shaped steel, and the positioning bolt is fixedly connected with the U-shaped steel. And the opening of the U-shaped groove of the U-shaped steel is downward. The forced centering tool for the small-hole-diameter TBM guiding system instrument is simple in structure and convenient to use, good stability can be provided for the guiding system instrument, and the operation space of the guiding system instrument is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of municipal engineering construction, and in particular relates to a forced centering tool for a small-diameter TBM guide system instrument. Background Art

[0002] In the construction of water conservancy and hydropower, highways, railways, municipal engineering, etc., the guidance system is mainly used in earth pressure / slurry balance shield machines, open TBMs, double shield TBMs, mining TBMs, R30m ultra-small turning radius micro hard rock tunnel boring machines and other models. During the construction process, the system automatically measures the posture of the tunnel boring machine and calculates the position of the tunnel boring machine in real time. The system integrates computer, automatic measurement, photoelectric sensor, laser, data communication and other automation technologies. It can obtain the deviation and posture of the tunnel boring machine relative to the tunnel design center line in real time, provide important instruction information for the tunnel boring machine to strictly follow the design route, and ensure the quality of tunnel construction and accurate penetration of the tunnel. Compared with highway, municipal and water conservancy tunnel projects, the underground project of pumped storage power station needs to dig a curved tunnel during construction. Conventional TBM has large volume and large turning radius, which is not suitable for pumped storage power station. Only when the turning radius is small to a certain extent can it meet the construction needs. Due to the small diameter and turning radius of this tunnel, the measurement space of the guide system is limited. There are strict requirements on the stability, position, size and flatness of the forced centering device of the guide system total station installed on the side wall of the tunnel. At the same time, this small-diameter TBM equipment has a short maintenance time and a long continuous excavation operation time. In order to ensure the construction progress, it is necessary to quickly carry out the guide system station change operation. During the station change process, whether the forced centering device of the guide system instrument can safely pass through and be quickly installed in a small working space is the main influencing factor restricting the station change operation time. Therefore, it is necessary to design and develop a small-diameter guide system instrument forced centering device that can ensure the excavation efficiency of the tunnel boring machine and provide good stability, fast and convenient installation and reusability for the guide system instrument in a small-diameter tunnel with a small turning radius and limited working space. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a small-diameter TBM guide system instrument forced centering tool which has a simple structure and is easy to use and can provide good stability for the guide system instrument and ensure the working space of the guide system instrument.

[0004] The technical solution of the utility model is: a forced centering tool for a small-diameter TBM guide system instrument, comprising: a U-shaped steel, a steel plate, and a positioning bolt, wherein one side of the U-shaped steel is vertically fixedly connected to the front side of the steel plate, the back side of the steel plate is fixedly connected to the wall, the positioning bolt passes through the U-shaped groove of the U-shaped steel and is vertically fixedly connected to the U-shaped steel, and the notch of the U-shaped groove of the U-shaped steel faces downward.

[0005] Furthermore, the steel plate is fixedly connected to the wall via a plurality of bolts and nuts.

[0006] The beneficial effects of the utility model are as follows: the forced centering tool for a small-diameter TBM guide system instrument of the utility model is easy to manufacture and use, can provide good stability for the guide system instrument, ensures the working space of the guide system instrument, is easy and quick to install, and prevents the guide system from being rubbed and unstable by TBM equipment during operation, causing directional errors, thereby improving the excavation construction efficiency of the tunnel boring machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0008] Figure 1 The utility model is a three-dimensional structural schematic diagram of a small-diameter TBM guide system instrument forced centering tool.

[0009] Figure 2 The utility model is a schematic diagram of the main structure of a small-diameter TBM guide system instrument forced centering tool.

[0010] Figure 3 The utility model is a schematic diagram of the top view of a forced centering tool of a small-diameter TBM guide system instrument.

[0011] Figure 4 The utility model is a side view structural schematic diagram of a small-diameter TBM guide system instrument forced centering tool.

[0012] In the figure: 1-U-shaped steel, 2-steel plate, 3-positioning bolt. DETAILED DESCRIPTION

[0013] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0014] like Figure 1-4As shown, a small-diameter TBM guide system instrument forced centering tool includes: U-shaped steel 1, steel plate 2, and positioning bolts 3. One side of the U-shaped steel 1 is vertically fixedly connected to the front side of the steel plate 2, and the back side of the steel plate 2 is fixedly connected to the wall. The positioning bolts 3 pass through the U-shaped groove of the U-shaped steel 1 and are vertically fixedly connected to the U-shaped steel 1, and the notch of the U-shaped groove of the U-shaped steel 1 faces downward.

[0015] Preferably, the steel plate 2 is fixedly connected to the wall by a plurality of bolts and nuts.

[0016] When in use, the forced centering tool is first installed on the tunnel wall, and then the TBM guidance system instrument is tightened on the positioning bolt 3.

[0017] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments and various changes can be made thereto within the knowledge scope of those skilled in the art.

Claims

1. A small-diameter TBM guidance system instrument forced centering tool, characterized in that: include: U-shaped steel (1), steel plate (2), and positioning bolts (3), wherein one side of the U-shaped steel (1) is vertically fixedly connected to the front side of the steel plate (2), and the back side of the steel plate (2) is fixedly connected to the wall, and the positioning bolts (3) pass through the U-shaped groove of the U-shaped steel (1) and are vertically fixedly connected to the U-shaped steel (1), and the notch of the U-shaped groove of the U-shaped steel (1) faces downward.

2. The small-diameter TBM guidance system instrument forced centering tool according to claim 1 is characterized in that: The steel plate (2) is fixedly connected to the wall via a plurality of bolts and nuts.

Images