Small-size shield tunnel measuring point lossless installation device

Abstract

The utility model relates to a lossless mounting device for measuring points of a small-size shield tunnel. The shield tunnel measuring point mounting device is obviously convex on a shield segment, and the height is high. In the device, an inner insertion sub-fastener is of a semi-ring sleeve structure and is sleeved on one side outside a pipe piece bolt and a pipe piece nut; the female fastener comprises an external thread column and a semi-ring plate which are integrally formed, and the semi-ring plate is located outside the internal insertion male fastener; the external secondary fastener is of a semi-ring sleeve structure, is sleeved on the other side outside the segment bolt and nut, and is in butt joint with the semi-ring plates of the internal insertion secondary fastener and the primary fastener; the backing ring is sleeved outside the semi-ring plates of the external secondary fastener and the primary fastener; and the locking nut is screwed and sleeved on the external thread column of the female fastener. According to the utility model, the assembly structure and the assembly mode are more reasonable, the overall height only comprises the height of the locking nut and the height of the backing ring, the overall height is greatly reduced, and after being installed on a shield segment, the shield segment does not protrude outwards obviously any more, so that the influence of the interior of a tunnel on the surrounding structure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunnel deformation monitoring, in particular to a non-destructive installation device for measuring points in a small-sized shield tunnel. Background Art

[0002] The shield method is a fully mechanized construction method in the dark excavation method. The shield machine is pushed into the stratum, and the surrounding rock is supported by the shield segments to prevent the surrounding rock from collapsing into the tunnel. At the same time, the soil is excavated in front of the excavation face with a cutting device, and transported out of the cave by the excavation machinery. Then, the shield segments are pressurized and assembled at the rear by jacks to form a tunnel structure longitudinally.

[0003] The assembly quality, deformation and damage of shield segments will directly affect the excavation efficiency and safety. Therefore, during the construction process, it is necessary to continuously monitor the health of the shield segments, arrange measuring points on the shield segments, and install measuring point devices at the measuring points. Through a level or a total station, the deformation monitoring data of the shield segments can be quickly and in real time obtained. However, the installation device of the existing shield tunnel measuring point is large in size and high in height, and the structure is not compact enough. It is fixed on the shield segment and has obvious convexity. It has a great impact on the surrounding structure inside the tunnel. In addition, the component structure and shape are complex, and the quality control during the manufacturing process is difficult, which affects the assembly effect between components.

[0004] Therefore, it is necessary to design a new shield tunnel measuring point installation device to overcome the above defects. Summary of the invention

[0005] The utility model aims to provide a small-sized shield tunnel measuring point non-destructive installation device to solve the problem that the current shield tunnel measuring point installation device has obvious protrusion and high height on the shield segment.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A non-destructive installation device for measuring points of a small-sized shield tunnel, the device comprising a locking nut, a female fastener, an internally inserted sub-fastener, a segment bolt nut, an external sub-fastener and a gasket;

[0008] The inner insert fastener is a semi-ring structure, which is sleeved on the outer side of the segment bolt nut;

[0009] The female fastener comprises an integrally formed external threaded column and a semi-ring plate, wherein the semi-ring plate is located outside the internal plug-in fastener;

[0010] The external sub-fastener is a semi-ring structure, which is placed outside the other side of the segment bolt nut and is butted with the internal sub-fastener and the semi-ring plate of the female fastener;

[0011] The cushion ring is sleeved outside the external sub-fastener and the semi-circular plate of the female fastener;

[0012] The lock nut is screwed on the external threaded column of the female fastener.

[0013] Further, the external threaded column of the female fastener is of a hollow structure, the top of the external threaded column has a sealing plate, the center of the sealing plate is provided with an opening, and an inlaid nut is inserted.

[0014] Further, the segment bolt nut is a hexagonal nut, and the inner wall shapes of the internal insertion sub-fastener and the external sub-fastener match the outer wall shape of the segment bolt nut.

[0015] Further, the thicknesses of the internal insertion sub-fastener and the external sub-fastener gradually increase from the top to the bottom.

[0016] Further, the semi-circular plate of the female fastener is inclined outward from the top to the bottom.

[0017] Further, the inner diameter of the cushion ring gradually increases from the top to the bottom.

[0018] Further, when the lock nut moves downward on the external threaded column of the female fastener, the bottom of the lock nut presses against the top of the cushion ring and pushes the cushion ring to move downward, tightly sleeving the external sub-fastener and the semi-circular plate of the female fastener.

[0019] Further, a limiting groove is provided on the outer wall of the internal insertion sub-fastener, and a limiting protrusion is provided on the inner wall of the semi-circular plate of the female fastener, and the limiting protrusion is inserted into the limiting groove.

[0020] Further, the cushion ring is composed of two semi-circular rings, the ends of the semi-circular rings have key grooves, and after the two semi-circular rings are butted, the key grooves of each other are communicated, and the inserted keys are connected to each other.

[0021] Further, the top of the lock nut has a hexagonal ring platform.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] The present utility model provides a non-destructive installation device for measuring points in a small-size shield tunnel, which has a more reasonable component structure and assembly method. The overall height only includes the height of the lock nut and the height of the cushion ring, and the rest of the components are located inside the device and do not increase the overall height. Since the heights of the lock nut and the cushion ring are limited respectively, the overall height is extremely reduced. After being installed on the shield segment, it does not protrude significantly outside, avoiding the influence on the surrounding structures inside the tunnel. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings of embodiments can also be obtained based on these drawings.

[0025] Figure 1 is the exploded view of the device of the present invention.

[0026] Figure 2 is the perspective view of the present invention.

[0027] Figure 3 is the side view of the present invention.

[0028] Figure 4 is the side view from another perspective of the present invention.

[0029] Figure 5 is the bottom structure diagram of the present invention.

[0030] Figure 6 is the top structure diagram of the present invention.

[0031] Figure 7 is the sectional view of the present invention.

[0032] The labels in the figure are:

[0033] 1 - locking nut, 2 - insert nut, 3 - female fastener, 4 - inner insert sub - fastener, 5 - segment bolt nut, 6 - external sub - fastener, 7 - gasket ring. Detailed implementation manners

[0034] To facilitate the understanding of the present invention, the following will describe the present invention more comprehensively with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connection", "setting", etc. should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integral connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In a specific implementation manner, one end of the locking nut 1 is defined as the "top", and one end of the segment bolt nut 5 is defined as the "bottom".

[0038] The utility model provides a non-destructive installation device for measuring points in a small-sized shield tunnel. The whole device is made of engineering plastic material, has a light and compact structure, is suitable for measuring point devices of all bolt types in existing shield projects, and does not damage the appearance and structure of the pipe segment. Only the pipe segment bolts and nuts 5 connecting the pipe segments can be used to non-destructively install the tunnel measuring points, without adding any impact on on-site construction and later operations.

[0039] Specifically, Figures 1-7 The device includes a locking nut 1, a female fastener 3, an internal sub-fastener 4, a segment bolt nut 5, an external sub-fastener 6 and a gasket 7.

[0040] The segment bolts and nuts 5 are fixed on the shield segments and are hexagonal nuts. The internal sub-fastener 4 is a semi-ring structure, which is sleeved on the outer side of the segment bolts and nuts 5. The female fastener 3 includes an integrally formed external threaded column and a semi-ring plate, which is located outside the internal sub-fastener 4. The external sub-fastener 6 is a semi-ring structure, which is sleeved on the other side of the segment bolts and nuts 5, and docks with the semi-ring plates of the internal sub-fastener 4 and the female fastener 3. The inner wall shape of the internal sub-fastener 4 and the external sub-fastener 6 matches the outer wall shape of the segment bolts and nuts 5.

[0041] The external thread column of the female fastener 3 is a hollow structure, and a sealing plate is provided on the top of the external thread column. The center of the sealing plate is opened, and the embedded nut 2 is screwed into the screw hole through the thread. The embedded nut 2 is used to cooperate with the screw to connect the measuring point device with the present device.

[0042] The gasket 7 is sleeved outside the semi-ring plate of the external sub-fastener 6 and the female fastener 3, and the locking nut 1 is screwed onto the external threaded column of the female fastener 3. The thickness of the internal sub-fastener 4 and the external sub-fastener 6 gradually increases from top to bottom, the semi-ring plate of the female fastener 3 tilts outward from top to bottom, and the inner diameter of the gasket 7 gradually increases from top to bottom. When the locking nut 1 moves to the bottom on the external threaded column of the female fastener 3, the bottom of the locking nut 1 presses against the top of the gasket 7 and pushes the gasket 7 to move to the bottom, tightening the semi-ring plate of the external sub-fastener 6 and the female fastener 3, thereby locking all the structures.

[0043] The outer wall of the insert sub-fastener 4 is also provided with a limiting groove, and the inner wall of the semi-circular plate of the female fastener 3 is provided with a limiting protrusion. The limiting protrusion is inserted into the limiting groove to limit each other.

[0044] The spacer ring 7 is composed of two semi-rings. The end of the semi-ring has a key groove. After the two semi-rings are butted, the key grooves of each other are communicated, and the insertion keys are connected to each other. This design is conducive to the overall disassembly of the device and can be reused again.

[0045] The top of the locking nut 1 also has a hexagonal ring platform to hold the spacer ring 7 firmly to prevent it from falling off.

[0046] From Figure 2 it can be seen that the structure of this device is extremely compact, the overall height is small, only including the height of the locking nut and the spacer ring added together. Moreover, the structures of all components are relatively simple, and no complex molds are required during manufacturing and forming.

[0047] The installation process of this device is as follows:

[0048] (1) First, place the insert sub-fastener 4 on one side outside the segment bolt nut 5;

[0049] (2) Put the semi-circular plate of the female fastener on the outside of the insert sub-fastener 4;

[0050] (3) Place the external sub-fastener 6 on the other side outside the segment bolt nut 5;

[0051] (4) Slip the spacer ring 7 over the semi-circular plate of the female fastener and the external sub-fastener 6;

[0052] (5) Slip the locking nut 1 onto the external thread post of the female fastener and tighten it, slipping it over the external sub-fastener 6 and the semi-circular plate of the female fastener 3 to hold the segment bolt nut 5 tightly;

[0053] (6) Install the embedded nut 2;

[0054] (7) Connect the measuring point device to this device with screws.

[0055] This device has a small structural height and is not significantly convex, so it does not affect other structures in the tunnel. During installation, it avoids the damage to the appearance and concrete structure of the tunnel segments caused by the existing installation methods, circumvents the potential safety hazards to the segment materials caused by the traditional installation methods, is convenient for installation, has a low learning cost, and can effectively shorten the monitoring construction period.

[0056] The above uses specific examples to elaborate on the present utility model, which is only used to help understand the present utility model and is not used to limit the present utility model. For those skilled in the technical field to which the present utility model belongs, according to the idea of the present utility model, several simple deductions, deformations or replacements can also be made.

Claims

1. A non-destructive installation device for measuring points in a small-sized shield tunnel, characterized in that: The device comprises a locking nut (1), a female fastener (3), an internal sub-fastener (4), a segment bolt nut (5), an external sub-fastener (6) and a gasket (7); The inner insert fastener (4) is a semi-ring structure, which is sleeved on the outer side of the segment bolt nut (5); The female fastener (3) comprises an integrally formed external threaded column and a semi-ring plate, wherein the semi-ring plate is located outside the internal plug-in fastener (4); The external sub-fastener (6) is a semi-ring structure, which is externally mounted on the other side of the segment bolt nut (5) and butt-jointed with the internal sub-fastener (4) and the semi-ring plate of the female fastener (3); The gasket (7) is sleeved outside the semi-ring plate of the external sub-fastener (6) and the female fastener (3); The locking nut (1) is screwed onto the external threaded column of the female fastener (3).

2. According to claim 1, a non-destructive installation device for measuring points in a small-sized shield tunnel, characterized in that: The external thread column of the female fastener (3) is a hollow structure, and the top of the external thread column is provided with a sealing plate, the center of the sealing plate is opened, and the embedded nut (2) is inserted.

3. A non-destructive installation device for measuring points in a small-sized shield tunnel according to claim 2, characterized in that: The segment bolt nut (5) is a hexagonal nut, and the inner wall shapes of the internally inserted sub-fastener (4) and the external sub-fastener (6) match the outer wall shape of the segment bolt nut (5).

4. A non-destructive installation device for measuring points in a small-sized shield tunnel according to claim 3, characterized in that: The thickness of the internally inserted sub-fastener (4) and the externally placed sub-fastener (6) gradually increases from the top to the bottom.

5. The non-destructive installation device for measuring points of a small-sized shield tunnel according to claim 4 is characterized in that: The semi-annular plate of the female fastener (3) is inclined outwards from top to bottom.

6. A non-destructive installation device for measuring points in a small-sized shield tunnel according to claim 5, characterized in that: The inner diameter of the gasket (7) gradually increases from the top to the bottom.

7. A non-destructive installation device for measuring points in a small-sized shield tunnel according to claim 6, characterized in that: When the locking nut (1) moves toward the bottom on the external threaded column of the female fastener (3), the bottom of the locking nut (1) presses against the top of the gasket (7) and pushes the gasket (7) to move toward the bottom, thereby tightening the external sub-fastener (6) and the semi-ring plate of the female fastener (3).

8. The non-destructive installation device for measuring points of a small-sized shield tunnel according to claim 7, characterized in that: The outer wall of the inserted sub-fastener (4) is provided with a limiting groove, and the inner wall of the semi-ring plate of the female fastener (3) is provided with a limiting protrusion, and the limiting protrusion is inserted into the limiting groove.

9. A non-destructive installation device for measuring points in a small-sized shield tunnel according to claim 8, characterized in that: The gasket (7) is composed of two half rings, the ends of the half rings are provided with keyways, and after the two half rings are butt-jointed, the keyways of each other are communicated and are connected to each other by inserting keys.

10. A non-destructive installation device for measuring points in a small-sized shield tunnel according to claim 9, characterized in that: The top of the locking nut (1) is provided with a hexagonal ring.

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