CN218759921U - Forced centering structure for shield tunnel lead measurement - Google Patents

Abstract

The utility model discloses a shield constructs tunnel wire and measures and forces centering structure aims at solving current tunnel and carries out the survey and drawing operation in, and the shield constructs the installation of survey mark and lays the technical problem who destroys section of jurisdiction intensity and measure the easy production error. The centering structure comprises a forced centering disc, a bracket and a pre-buried sliding groove arranged on the corresponding shield segment; the support is a human-shaped support consisting of a cross brace and an inclined brace, two leg ends of the human-shaped support are provided with corresponding bases, and the bases are detachably mounted and fixed on the embedded sliding groove part through corresponding T-shaped bolts; the forced centering disc is mounted on the near top end of the cross brace. This application has under the condition of not destroying section of jurisdiction intensity, can freely adjust the support position, makes the measurement more accurate, in the aspect of installation, demolish, can reuse advantage such as.

Description

Forced centering structure for shield tunnel lead measurement

Technical Field

The utility model relates to a survey and drawing frock technical field, concretely relates to be used for shield tunnel wire measuring to force centering structure.

Background

In the process of tunnel shield construction, the key for controlling measurement is to ensure tunnel penetration, and the manufacture and layout of the wire mark for controlling measurement are more important.

The existing shield measurement mark is installed and laid, certain defects exist, and because the common shield control measurement mark is buried underground, the shield control measurement mark can be directly punched on a pipe piece to be laid or an expansion bolt is used for fixing a measurement support, the shield control measurement mark and the pipe piece can be damaged or polluted, a punching and laying point position on the pipe piece has a centering error, so that the measurement result is inaccurate, and the tunnel through precision is directly influenced. An adjustable forced centering support (CN 207407032U) that the inventor knows discloses including last fulcrum, lower fulcrum, base, go up the fulcrum and fix on section of jurisdiction intrados with lower fulcrum, it has the horizontal pole to go up the fulcrum articulated, lower fulcrum has two, it has left and right oblique branch to articulate on two lower fulcrums, left and right oblique branch keeps away from lower fulcrum end and articulates respectively at the horizontal pole lateral part, the horizontal pole upper end is equipped with the base, the base top is equipped with the base.

However, in the process of implementing the technical solution in the embodiment of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems:

the existing shield measurement mark is installed and laid, certain defects exist, because the common shield control measurement mark is buried underground and can be directly punched on the pipe piece to be laid or an expansion bolt fixing measurement support is punched, the shield control measurement mark and the pipe piece can damage or pollute the strength of the pipe piece, the tunnel quality is influenced, the pipe piece is punched or the expansion bolt is laid, the point position has a centering error, the measurement result is inaccurate, and the tunnel through precision is directly influenced.

The information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

Disclosure of Invention

The inventor discovers through research that: the existing shield measurement mark is installed and laid, a duct piece is punched or an expansion bolt is used for fixing a measurement support through manual work, the strength of the duct piece can be damaged, errors are easily generated, measurement inaccuracy is caused, the tunneling speed is influenced, and the later maintenance cost is increased.

In view of at least one of above technical problem, this disclosure provides a shield tunnel wire measures forces centering structure, adopts pre-buried spout location between the section of jurisdiction, has avoided the destruction to section of jurisdiction intensity of punching on the scene, has improved centering structure's positioning accuracy and removal degree of freedom to and installation effectiveness.

According to one aspect of the disclosure, a forced centering structure for shield tunnel lead measurement is provided, which comprises a forced centering disc, a bracket and pre-embedded sliding grooves arranged on corresponding shield segments; the support is a human-shaped support consisting of a cross brace and an inclined brace, two leg ends of the human-shaped support are provided with corresponding bases, and the bases are detachably mounted and fixed on the embedded sliding groove part through corresponding T-shaped bolts; the forced centering disc is installed on the near top end of the cross brace.

In some embodiments of the present disclosure, the anthropomorphic frame is made of galvanized square tubing.

In some embodiments of the present disclosure, the base is attached to an intrados surface of the shield segment.

In some embodiments of the present disclosure, the pre-buried sliding grooves are arranged along a circumferential direction of the intrados of the shield segment.

One or more technical solutions provided in the embodiments of the present application have at least any one of the following technical effects or advantages:

1. utilize the fixed measurement support of the pre-buried spout of section of jurisdiction, avoid the destruction to section of jurisdiction intensity, guaranteed tunnel quality.

2. The mounting position of the measuring support is freely adjusted by utilizing the pre-buried chute of the duct piece, so that the error is reduced, accurate positioning is realized, and the measuring accuracy is ensured.

3. The measuring support is connected with the duct piece pre-embedded sliding groove through the T-shaped bolt, so that the mounting and dismounting are convenient and can be repeatedly utilized, and the cost is saved.

Drawings

Fig. 1 is a schematic structural diagram of a shield tunnel lead measurement forced centering structure in an embodiment of the present application.

In the above figures, 1 is a forced centering disc, 2 is a human-shaped frame, 3 is a base, 4 is a T-shaped bolt, 5 is a nut, 6 is a segment, 7 is an embedded chute, 21 is a cross brace, and 22 is an inclined brace.

Detailed Description

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application. References in this application to "first," "second," etc. are used to distinguish between the objects described and not to have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified.

For better understanding of the technical solutions of the present application, the technical solutions will be described in detail below with reference to the drawings and specific embodiments.

Example one

The embodiment discloses a forced centering structure for shield tunnel lead measurement, and referring to fig. 1, during measurement, a first support is firstly installed and debugged, the support is pre-installed on a duct piece 6 through a T-shaped bolt 4 and a nut 5, then debugging and positioning are carried out, a spirit level and a suspension wire weight are used for adjustment, a forced centering disc is kept horizontal and vertical, finally the T-shaped bolt 4 and the nut 5 are fastened, the support is fastened on the duct piece 6, and the installation of other supports is carried out in sequence by taking the first support as a reference. The support comprises a cross brace 21 and an inclined brace 22, the cross brace 21 and the inclined brace 22 are made of galvanized square pipes and are welded and fixed to form a human-shaped frame 2, the tail ends of the human-shaped frame 2 are fixedly connected with a base 3 respectively, screw holes are formed in two ends of the base 3 respectively and can be matched with T-shaped bolts 4 to penetrate through the screw holes, and the T-shaped bolts 4 are slidably installed in pre-buried sliding grooves 7 and matched with nuts 5 for use and used for fixing and adjusting the human-shaped frame 2; the other end of the cross brace 21 is provided with a forced centering disc 1, and the forced centering disc 1 is provided with a bolt for installing and fixing surveying and mapping equipment for measurement.

Specifically in this embodiment, stull 21, base 3 can be laminated with section of jurisdiction 6, and stull 21 and bracing 22 can use the size to be 80mm 40mm, and thickness is 2 mm's zinc-plated side pipe, easily draws materials, and hollow structure has filtered partial vibrations simultaneously, the equipment weight of reduction. The base 3 is regular in shape, usually rectangular in shape, the width of the base is the same as that of a galvanized square tube, the base is made of medium carbon steel and is beneficial to welding, holes are formed in the base 3, and the diameter of each groove enables the T-shaped bolt 4 to pass through.

Further, the base 3 is welded to the end positions of the cross brace 21 and the inclined brace 22, the base 3 is provided with holes through which the T-shaped bolts 4 can pass, and the holes are distributed along the trend of the segment pre-embedded sliding grooves 7, so that the pre-embedded sliding grooves 7 between the segments 6 are ensured to be matched.

More specifically, 6 linking departments of two sections of jurisdiction can produce pre-buried spout 7, put into T type bolt 4 in pre-buried spout 7, and make T type bolt 4 card go into pre-buried spout 7 through rotation adjustment, base 3 is equipped with the trompil, and trompil department corresponds with pre-buried spout 7 position, ensure that T type bolt 4 can pass smoothly, 3 top welding stull 21 of base and bracing 22, 3 positions make the welding have the square pipe adjustment of forcing centering disc 1 to be in the horizontality along 6 surface adjustment bases of section of jurisdiction, fastening nut 5, centering disc 1 and mapping equipment are forced in the installation, carry out the operation.

Although preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made to the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present application and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (4)

1. A forced centering structure for shield tunnel wire measurement comprises a forced centering disc and a support, and is characterized by also comprising pre-embedded sliding grooves arranged on corresponding shield segments; the support is a human-shaped frame consisting of cross braces and inclined braces, two leg ends of the human-shaped frame are provided with corresponding bases, and the bases are detachably installed and fixed at the embedded sliding groove part through corresponding T-shaped bolts; the forced centering disc is installed on the near top end of the cross brace.

2. The forced centering structure for shield tunnel wire measurement according to claim 1, wherein the anthropomorphic frame is made of galvanized square tubes.

3. The forced centering structure for shield tunnel wire measurement as claimed in claim 1, wherein said pedestal is attached to the intrados surface of said shield segment.

4. The forced centering structure for shield tunnel wire measurement as claimed in claim 1, wherein the pre-buried sliding grooves are arranged along the circumferential direction of the intrados of the shield segment.

Images