Forced centering structure for shield tunnel wire measurement

Abstract

The utility model relates to the technical field of surveying and mapping tools, in particular to a forced centering structure for shield tunnel wire measurement, which comprises a pipe piece, a cross brace and an inclined brace, an embedded chute is arranged on the inner side of the pipe piece, two T-shaped bolts are arranged in the cross brace and the inclined brace in a penetrating manner, the T-shaped bolts are in sliding connection with the inner side of the embedded chute, and the T-shaped bolts are connected with the inner side of the embedded chute in a sliding manner. The side wall of the T-shaped bolt is in threaded connection with a nut, a forced centering disc is installed on the upper surface of the transverse support, a rotating structure is arranged between the transverse support and the inclined support and comprises two fixing plates fixedly connected to the lower surface of the transverse support, and rotating pins are rotationally connected to the interiors of the two fixing plates; the side wall of the rotating pin is fixedly connected with the interior of the inclined strut, and a plurality of clamping grooves are evenly formed in the side wall of the rotating pin. According to the utility model, the rotating structure is arranged, so that the flexible rotating and fixing work between the cross brace and the inclined brace is facilitated, and the subsequent carrying and using work of the bracket are further facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of surveying and mapping tooling, in particular to a forced centering structure used for shield tunnel conductor measurement. Background Art

[0002] The forced centering structure of shield tunnel traverse measurement mainly includes the following steps: baseline measurement, traverse measurement, forced centering, using a total station or laser tracker to set multiple forced centering points in the tunnel and measure the coordinates of each point, setting multiple centering marks in the tunnel, and determining the tunnel centerline by measuring the relative positions of each mark. In short, the forced centering structure of shield tunnel traverse measurement is a key step to ensure the accuracy of the tunnel centerline, which requires a strict measurement and data processing process.

[0003] A Chinese patent with publication number CN218759921U discloses a forced centering structure for shield tunnel conductor measurement, which aims to solve the technical problems in existing tunnel surveying and mapping operations, such as the installation and layout of shield measurement marks damaging the strength of the segments and the measurement errors. The centering structure includes a forced centering plate, a bracket, and also includes a pre-buried chute provided on the corresponding shield segment; the bracket is a human-shaped frame composed of a horizontal brace and a diagonal brace, and corresponding bases are provided at the two leg ends of the human-shaped frame, and the bases are detachably fixed to the pre-buried chute by corresponding T-bolts; the forced centering plate is installed near the top of the horizontal brace. The present application has the advantages of being able to freely adjust the position of the bracket without damaging the strength of the segment, making the measurement more accurate, and being reusable in terms of installation and removal.

[0004] The existing related technologies often have the following defects: in the actual use of the above-mentioned forced centering structure, the connection method between the horizontal brace and the diagonal brace is often welding, which results in the staff carrying the bracket. The bracket often occupies a large carrying space, making it inconvenient to carry the bracket, thereby reducing the carrying efficiency of the forced centering structure.

[0005] Therefore, the utility model provides a forced centering structure for shield tunnel conductor measurement. Utility Model Content

[0006] The purpose of the utility model is to solve the disadvantage in the prior art that it is inconvenient to carry a "human" type structure bracket, and to propose a forced centering structure for shield tunnel conductor measurement.

[0007] The lockhole that is formed on the upper end of the shaft is formed on the upper end of the shaft, and the lockhole that is formed on the lower end of the shaft is formed on the upper end of the shaft.

[0008] The effect achieved by the above components is: the insert block is inserted into the inner side of the card slot, which can fix the diagonal brace after rotation, and an overlapping structure is formed between the diagonal brace and the horizontal brace, which reduces the space occupied by the bracket during carrying, thereby facilitating the staff's carrying of the bracket.

[0009] Preferably, a spring is sleeved on the surface of the sliding pin, and two ends of the spring are fixedly connected to the connecting block and the inserting block respectively.

[0010] The effect achieved by the above components is that the inserting block is inserted into the inner side of the card slot under the elastic force of the spring on the connecting block.

[0011] Preferably, the upper end of the sliding pin is rotatably connected to a rotating block.

[0012] The effect achieved by the above components is that the setting of the rotating block also facilitates the pulling work of the sliding pin.

[0013] Preferably, a limiting groove is provided on the side wall of the fixing plate.

[0014] The effect achieved by the above components is: by rotating the rotating block and sleeved it on the inner side of the limiting groove, temporary support and fixation of the lifted rear insert block can be achieved.

[0015] Preferably, a measuring structure is provided on the surface of the cross brace, and the measuring structure comprises a protractor fixedly connected to the surface of the cross brace, and a circumferential array on the surface of the protractor has a plurality of scale grooves.

[0016] The effects achieved by the above components are: the provision of the protractor and the scale groove facilitates the observation of the installation status of the cross brace and avoids the cross brace from being skewed during installation.

[0017] Preferably, a positioning pin is fixedly connected to the surface of the cross brace, and a cotton rope is fixedly connected to the lower side of the positioning pin.

[0018] The effect achieved by the above components is: the installation status of the cross brace can be observed by observing the status of the cotton rope and the scale groove on the protractor. When the cotton rope and the middle scale groove of the protractor are in an overlapping state, the cross brace can be fixed and installed.

[0019] Preferably, the lower end of the cotton rope is fixedly connected to a gravity ball.

[0020] The effect achieved by the above components is that the gravity ball will always keep the cotton rope in a suspended state due to the effect of its own gravity.

[0021] In summary:

[0022] 1. In the present invention, by providing a rotating structure, the insert block will be inserted into the inner side of the card slot under the action of the spring force on the connecting block, which can realize the fixing of the diagonal brace after rotation, and form an overlapping structure between the diagonal brace and the transverse brace, which reduces the space occupied by the bracket during carrying, thereby facilitating the staff's carrying work of the bracket. When using the bracket, this convenience can also be used to realize the expansion and fixing work between the transverse brace and the diagonal brace. By providing a rotating structure, the flexible rotation and fixing work between the transverse brace and the diagonal brace is facilitated, thereby facilitating the subsequent carrying and use of the bracket.

[0023] 2. In the utility model, a measuring structure is provided, and the installation status of the cross brace can be observed by observing the status of the cotton rope and the scale groove on the protractor. When the cotton rope and the middle scale groove of the protractor are in an overlapping state, the cross brace can be fixed and installed. By providing the measuring structure, the observation of the installation status of the cross brace is facilitated, the phenomenon of skewness during the installation of the cross brace is avoided, the accuracy of the installation of the cross brace is improved, and the subsequent normal use of the cross brace is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0026] Figure 3 For this utility model Figure 2 A magnified view of point A;

[0027] Figure 4 For this utility model Figure 2 Enlarged view of point B.

[0028] Legend: 1. Segment; 2. Horizontal brace; 3. Diagonal brace; 4. Forced centering plate; 5. Embedded slide; 6. T-bolt; 7. Nut; 8. Rotating structure; 81. Fixed plate; 82. Rotating pin; 83. Slot; 84. Insert block; 85. Connecting block; 86. Sliding pin; 87. Rotating block; 88. Spring; 89. Limiting slot; 9. Measuring structure; 91. Protractor; 92. Scale slot; 93. Cotton rope; 94. Gravity ball; 95. Locating pin. DETAILED DESCRIPTION

[0029] Reference Figure 1 As shown, the utility model provides a technical solution: a forced centering structure for shield tunnel conductor measurement, including a pipe segment 1, a cross brace 2 and a diagonal brace 3, a pre-buried chute 5 is opened on the inner side of the pipe segment 1, two T-bolts 6 are passed through the inside of the cross brace 2 and the diagonal brace 3, the T-bolts 6 are slidably connected to the inner side of the pre-buried chute 5, the side wall of the T-bolt 6 is threadedly connected with a nut 7, a forced centering plate 4 is installed on the upper surface of the cross brace 2, a rotating structure 8 is provided between the cross brace 2 and the diagonal brace 3, and a measuring structure 9 is provided on the surface of the cross brace 2.

[0030] The specific configuration and functions of the rotating structure 8 and the measuring structure 9 will be described in detail below.

[0031] Reference Figure 1-Figure 3 As shown, in this embodiment, the rotating structure 8 includes two fixed plates 81 fixedly connected to the lower surface of the cross brace 2. The two fixed plates 81 are internally connected to a rotating pin 82 for rotation. The side walls of the rotating pin 82 are fixedly connected to the inside of the diagonal brace 3. The side walls of the rotating pin 82 are evenly provided with a plurality of slots 83. The surface of the fixed plate 81 is fixedly connected to a connecting block 85. The connecting block 85 is internally connected to a sliding pin 86 for sliding movement. The lower end of the sliding pin 86 is fixedly connected to an insert block 84. The size of the insert block 84 matches the size of the slot 83. The insert block 84 is inserted into the inner side of the slot 83 to fix the diagonal brace 3 after rotation. The diagonal brace 3 and the cross brace 2 form an overlapping structure, which reduces the space occupied by the bracket during carrying, thereby facilitating the staff's carrying of the bracket.

[0032] A spring 88 is mounted on the surface of the sliding pin 86, with its ends fixedly connected to the connecting block 85 and the inserting block 84, respectively. The inserting block 84 is inserted into the inner side of the slot 83 by the elastic force of the spring 88 on the connecting block 85. A rotating block 87 is rotatably connected to the upper end of the sliding pin 86. The provision of the rotating block 87 also facilitates the movement of the sliding pin 86. A limiting slot 89 is defined in the sidewall of the fixed plate 81. By rotating the rotating block 87 and fitting it inside the limiting slot 89, the inserted block 84 can be temporarily supported and fixed after being lifted.

[0033] Reference Figure 1-Figure 2 and Figure 4As shown, specifically, the measuring structure 9 includes a protractor 91 fixedly connected to the surface of the cross brace 2. The surface of the protractor 91 has a plurality of scale grooves 92 arranged in a circumferential array. The provision of the protractor 91 and the scale grooves 92 facilitates observation of the installation status of the cross brace 2 and prevents the cross brace 2 from tilting during installation. A positioning pin 95 is fixedly connected to the surface of the cross brace 2, and a cotton rope 93 is fixedly connected to the lower side of the positioning pin 95. The installation status of the cross brace 2 can be observed by observing the state of the cotton rope 93 and the scale groove 92 on the protractor 91. When the cotton rope 93 and the scale groove 92 in the middle of the protractor 91 are in an overlapping state, the cross brace 2 can be fixedly installed. A gravity ball 94 is fixedly connected to the lower end of the cotton rope 93. The gravity ball 94 will drive the cotton rope 93 to always remain in a suspended state due to its own gravity.

[0034] Working principle: when it is necessary to carry the cross brace 2 and the diagonal brace 3 after use, first pull the sliding pin 86. When the sliding pin 86 drives the insert block 84 to be pulled out from the inner side of the slot 83, the rotating block 87 can be rotated and the rotating block 87 can be sleeved on the inner side of the limit slot 89 to achieve temporary support and fixation of the inserted block 84 after lifting. At this time, the staff can flexibly rotate the rotating pin 82 inside the fixing plate 81. At this time, the rotating pin 82 inside the fixing plate 81 can be flexibly rotated. When the diagonal brace 3 is rotated to a position close to the surface of the cross brace 2, the rotating block 87 located inside the limit slot 89 is rotated out. 7. At this time, the insert block 84 will be inserted into the inner side of the card slot 83 by the elastic force of the spring 88 on the connecting block 85, which can realize the fixing of the diagonal brace 3 after rotation. An overlapping structure is formed between the diagonal brace 3 and the transverse brace 2, which reduces the space occupied by the bracket during carrying, thereby facilitating the staff's carrying work of the bracket. When using the bracket, this convenience can also be used to realize the expansion and fixing work between the transverse brace 2 and the diagonal brace 3. By setting the rotating structure 8, the flexible rotation and fixing work between the transverse brace 2 and the diagonal brace 3 is facilitated, thereby facilitating the subsequent carrying and use of the bracket.

[0035] When the cross brace 2 needs to be placed horizontally, after the T-bolt 6 is installed on the inner side of the embedded slide groove 5, the gravity ball 94 will be driven by its own gravity to drive the cotton rope 93 to always remain in a suspended state. The installation status of the cross brace 2 can be observed by observing the status of the cotton rope 93 and the scale groove 92 on the protractor 91. When the cotton rope 93 and the middle scale groove 92 of the protractor 91 are in an overlapping state, the cross brace 2 can be fixed and installed. By setting the measuring structure 9, the observation of the installation status of the cross brace 2 is facilitated, the phenomenon of skewness of the cross brace 2 during the installation process is avoided, the accuracy of the installation of the cross brace 2 is improved, and the subsequent normal use of the cross brace 2 is facilitated.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. A forced centering structure for shield tunnel conductor measurement, comprising a segment (1), a transverse brace (2), and a diagonal brace (3), characterized in that: The inner side of the pipe segment (1) is provided with a pre-buried chute (5), and the interior of the transverse brace (2) and the diagonal brace (3) are penetrated with two T-bolts (6), and the T-bolts (6) are slidably connected to the inner side of the pre-buried chute (5), and the side wall of the T-bolt (6) is threadedly connected with a nut (7), and the upper surface of the transverse brace (2) is provided with a forced centering plate (4), and a rotating structure (8) is provided between the transverse brace (2) and the diagonal brace (3), and the rotating structure (8) includes two fixed plates fixedly connected to the lower surface of the transverse brace (2) (81), the two fixed plates (81) are internally connected to a rotating pin (82), the side wall of the rotating pin (82) is fixedly connected to the inside of the diagonal support (3), the side wall of the rotating pin (82) is evenly provided with a plurality of card slots (83), the surface of the fixed plate (81) is fixedly connected to a connecting block (85), the connecting block (85) is internally slidably connected to a sliding pin (86), the lower end of the sliding pin (86) is fixedly connected to an insert block (84), and the size of the insert block (84) is adapted to the size of the card slot (83).

2. The forced centering structure for shield tunnel conductor measurement according to claim 1, characterized in that: The surface of the sliding pin (86) is covered with a spring (88), and the two ends of the spring (88) are fixedly connected to the connecting block (85) and the inserting block (84) respectively.

3. The forced centering structure for shield tunnel conductor measurement according to claim 1, characterized in that: The upper end of the sliding pin (86) is rotatably connected to a rotating block (87).

4. The forced centering structure for shield tunnel conductor measurement according to claim 1, characterized in that: A limiting groove (89) is provided on the side wall of the fixing plate (81).

5. The forced centering structure for shield tunnel conductor measurement according to claim 1, characterized in that: The surface of the cross brace (2) is provided with a measuring structure (9), and the measuring structure (9) comprises a protractor (91) fixedly connected to the surface of the cross brace (2), and a plurality of scale grooves (92) are arranged in a circumferential array on the surface of the protractor (91).

6. The forced centering structure for shield tunnel conductor measurement according to claim 1, characterized in that: A positioning pin (95) is fixedly connected to the surface of the cross brace (2), and a cotton rope (93) is fixedly connected to the lower side of the positioning pin (95).

7. The forced centering structure for shield tunnel conductor measurement according to claim 6, characterized in that: The lower end of the cotton rope (93) is fixedly connected with a gravity ball (94).

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