Metro tunnel convergence deformation measuring device

Abstract

The utility model provides a subway tunnel convergence deformation measuring device, which belongs to the technical field of tunnel data measurement and comprises a mounting rod, a bubble level gauge, a laser ranging component, a supporting component and a positioning component. The mounting rod is vertically arranged, the side face of the mounting rod is fixedly connected with a bubble level, the laser ranging assembly is arranged on the upper portion of the mounting rod, and the supporting assembly is arranged in the middle of the mounting rod and used for supporting the mounting rod. The positioning assembly is arranged on the lower portion of the mounting rod and comprises an abutting ring, an abutting ring slope, a sleeve, a clamping ball and a mounting groove, the mounting groove is formed in the lower portion of the mounting rod, the abutting ring, the abutting ring slope and the clamping ball are all arranged in the mounting groove, the clamping ball is arranged above the abutting ring slope and makes contact with the abutting ring slope, and the sleeve moves upwards to drive the abutting ring slope to move upwards. And the clamping ball extends out, so that the mounting rod is accurately mounted in a preset positioning base. According to the tunnel convergence deformation measuring device, the positioning assembly is arranged to be matched with the preset positioning base for positioning, the bubble level gauge is matched with the supporting assembly for auxiliary positioning, the positioning accuracy of the tunnel convergence deformation measuring device is greatly improved, the centering arrangement time of the device is greatly shortened, and the working efficiency and the measuring precision are improved.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel data measurement technology, specifically relating to a subway tunnel convergence deformation measurement device. Background Technology

[0002] Deformation measurement of subway tunnels is a key technical means to ensure the safe operation of underground transportation systems. With the development of urban rail transit networks, tunnel structures are subjected to the effects of train dynamic loads, ground pressure, and changes in the surrounding environment for a long time, which may cause structural damage such as convergence deformation and lining cracking. In severe cases, it may even lead to operational accidents such as track deformation and catenary failure. Timely acquisition of subway tunnel deformation data can provide a scientific basis and technical support for the safety management of subway tunnels throughout their entire life cycle.

[0003] Chinese patent CN209263990U mentions a dedicated forced alignment device for a tunnel laser profiler, belonging to the field of engineering testing technology, specifically applied to tunnel laser profile measurement. The dedicated forced alignment device for a tunnel laser profiler includes: a connector (1), an alignment rod (2), a spring (3), and a plug screw (4). During high-precision deformation monitoring of subway tunnel structures in operation, a laser profiler is required for measurement, especially for high-precision point measurement of deformation in subway tunnel sections under high-rise buildings. The instrument's alignment accuracy is extremely high, and due to the short working time and heavy workload, the traditional method of using a tripod to install the laser profiler is difficult to guarantee alignment accuracy, resulting in low measurement efficiency. Utility Model Content

[0004] The problem this invention aims to solve is that the traditional tripod installation method for subway tunnel convergence deformation measuring devices cannot guarantee data accuracy, leading to inaccurate measurements and low efficiency. This invention addresses this by drilling holes at the tunnel positioning measurement points and directly mounting the instrument on pre-embedded monitoring points. The positioning component works in conjunction with the base for positioning, and the support component assists in positioning, greatly improving the positioning accuracy of the subway tunnel convergence deformation measuring device, significantly shortening the instrument's centering and installation time, and increasing work efficiency and measurement accuracy.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: the subway tunnel convergence deformation measuring device includes an installation rod, a bubble level, a laser ranging component, a support component, and a positioning component; the installation rod is set vertically, and a bubble level is fixedly connected to the side of the installation rod, the laser ranging component is set on the upper part of the installation rod, and the support component is set in the middle of the installation rod to support the installation rod;

[0006] The positioning component is located at the lower part of the mounting rod. The positioning component includes a retaining ring, a retaining ring inclined surface, a sleeve, a retaining ball, and a mounting groove. The mounting groove is located at the lower part of the mounting rod. The retaining ring, the retaining ring inclined surface, and the retaining ball are all located inside the mounting groove. The retaining ball is located above the retaining ring inclined surface and is in contact with the retaining ring inclined surface. The sleeve moves upward, causing the retaining ring inclined surface to move upward, so that the retaining ball extends out, thereby accurately installing the mounting rod in the preset positioning base.

[0007] Furthermore, the positioning assembly also includes an inner rod and a mounting rod base. An annular groove is provided on the outside of the mounting groove. The height of the annular groove is between 2 / 3 and 1 times the diameter of the ball clamp to ensure that the ball clamp does not fall off during the alignment process. An inner rod is provided inside the mounting groove, which is located above the mounting rod base. The lower part of the inner rod is threadedly connected to the mounting rod base.

[0008] Furthermore, the positioning component also includes a sleeve, which is fitted onto the inner rod inside the mounting groove. A retaining ring is located at the lower end of the sleeve, and a retaining ring inclined surface is provided on the retaining ring. The retaining ring is fixedly connected to the lower end face of the sleeve, and multiple retaining balls are set inside the ring groove.

[0009] Furthermore, the positioning assembly also includes an axial groove and a slider. The groove is formed axially on the outer surface of the mounting rod, and the slider is fixedly connected to the upper end face of the sleeve. The slider engages with the groove radially along the mounting rod.

[0010] Furthermore, the positioning component also includes a second threaded sleeve, the outer surface of which is uniformly provided with anti-slip protrusions, the second threaded sleeve is connected to the outer surface of the mounting rod by a threaded connection, and the top of the second threaded sleeve abuts against the lower end face of the slider.

[0011] Furthermore, the positioning component also includes a spring, which is coaxially arranged with the inner rod and disposed inside the mounting groove. One end of the spring abuts against the inner wall of the mounting groove, and the other end abuts against the end of the sleeve.

[0012] Furthermore, the support assembly includes a first threaded sleeve and a mounting ring. The first threaded sleeve is threadedly connected to the middle of the mounting rod, and the mounting ring is sleeved on the mounting rod. The lower end face of the first threaded sleeve contacts the upper end face of the mounting ring, and the lower end of the mounting ring is hinged to the upper end of the upper support rod.

[0013] Furthermore, the support assembly also includes a lower support rod, a lower support rod and a roller. The lower end of the lower support rod is rotatably connected to the roller. The middle part of the lower support rod is hinged to the lower end of the upper support rod, and the upper end of the lower support rod is hinged to the lower middle part of the mounting rod.

[0014] Furthermore, the laser ranging component includes a laser rangefinder, a shaft, and a U-shaped support frame. The laser rangefinder is fitted with the shaft through a shaft hole, allowing it to rotate up and down to adjust the angle. The shaft hole is located in the middle of the U-shaped support frame and is connected to the U-shaped support frame. The U-shaped support frame is fixedly connected to the upper end face of the mounting rod.

[0015] Furthermore, the bubble level is located in the upper part of the mounting rod, and the bubble level is fixedly connected to the mounting rod. The distance between the bubble level and the first threaded sleeve is greater than the upward movement stroke of the support assembly.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows.

[0017] This invention features a support component and a positioning component at the middle and lower parts of the mounting rod, respectively. The user can precisely insert the mounting rod into the positioning base pre-set at the tunnel measurement point using the positioning component. Rotating the second threaded sleeve moves the slider, sleeve, and abutment ring upwards. The inclined surface of the abutment ring presses outwards against the retaining ball, causing it to extend and abut against the positioning ring groove of the positioning base. The positioning component ensures that the axis of the mounting rod aligns as closely as possible with the axis of the positioning base, thereby allowing the laser ranging component to be precisely positioned at the measurement point along with the mounting rod.

[0018] A bubble level, in conjunction with a support assembly, assists in horizontal positioning, ensuring that the device's positioning and horizontal accuracy meet the measurement accuracy requirements. Then, a laser rangefinder directly collects tunnel deformation data, and the precise positioning of the laser rangefinder improves the efficiency of the data collection process. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Figure 1 This is a schematic diagram of the overall structure of the subway tunnel convergence deformation measuring device of this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the subway tunnel convergence deformation measuring device of this utility model. Figure 2 ;

[0022] Figure 3 This utility model relates to a subway tunnel convergence deformation measuring device. Figure 2 Enlarged view of part A in the middle;

[0023] Figure 4 This is a schematic cross-sectional view of the positioning component of the subway tunnel convergence deformation measuring device in this utility model.

[0024] Figure 5 This is a simplified schematic diagram of the installation of the subway tunnel convergence deformation measuring device in this utility model;

[0025] Figure 6 This is a side cross-sectional view of the laser ranging component of the subway tunnel convergence deformation measuring device in this utility model.

[0026] In the diagram: 101, mounting rod; 102, inner rod; 103, mounting groove; 104, mounting rod base; 201, laser rangefinder; 202, U-shaped support frame; 203, shaft; 3, lower support rod; 4, upper support rod; 5, mounting ring; 6, first threaded sleeve; 901, sleeve; 902, abutment ring; 902-1, abutment ring inclined surface; 903, slider; 11, ball catcher; 12, sliding groove; 14, second threaded sleeve; 15, roller; 16, spring; 17, bubble level. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] refer to Figures 1-6A subway tunnel convergence deformation measuring device includes: a mounting rod 101, a bubble level, a laser ranging component, a support component, and a positioning component; the mounting rod 101 is vertically arranged, and a bubble level is fixedly connected to the side of the mounting rod 101; the laser ranging component is located on the upper part of the mounting rod 101; and the support component is located in the middle of the mounting rod 101 to support the mounting rod 101.

[0032] refer to Figure 6 The laser ranging component includes a laser rangefinder 201, a shaft 203, and a U-shaped support frame 202. The laser rangefinder 201 is fitted with the shaft 203 via a shaft hole, allowing it to rotate up and down to adjust the angle. The shaft hole is located in the middle of the U-shaped support frame 202, and the shaft hole is rotatably connected to the U-shaped support frame 202. The U-shaped support frame 202 is fixedly connected to the upper end face of the mounting rod 101. The laser detection component is a commercially available product. The laser detector rotates within a certain angle to perform measurements and collect three-dimensional information of coordinate points within the same cross-section.

[0033] refer to Figure 1 The bubble level is located on the upper part of the mounting rod 101 and is fixedly connected to the mounting rod 101. During installation, the bubble level, together with the support assembly, performs auxiliary horizontal calibration of the device.

[0034] refer to Figure 1 , Figure 2 The support assembly includes an upper support rod 4, a lower support rod 3, a roller 15, a first threaded sleeve 6, and a mounting ring 5. The first threaded sleeve 6 is threadedly connected to the middle of the mounting rod 101. The mounting ring 5 is sleeved on the mounting rod 101. The lower end face of the first threaded sleeve 6 contacts the upper end face of the mounting ring 5. The lower end of the mounting ring 5 is hinged to the upper end of the upper support rod 4. The lower end of the lower support rod 3 is rotatably connected to the roller 15. The middle of the lower support rod 3 is hinged to the lower end of the upper support rod 4. The upper end of the lower support rod 3 is hinged to the lower middle part of the mounting rod 101.

[0035] As can be seen from the above, after the lower part of the inner rod 102 is installed with the preset positioning base inside the tunnel, the first threaded sleeve 6 can be rotated. As the first threaded sleeve 6 slides downward relative to the mounting rod 101, the first threaded sleeve 6 will drive the mounting ring 5 to move downward. The mounting ring 5 will drive the upper support rod 4 to rotate, and then the upper support rod 4 will drive the lower support rod 3 to rotate. Finally, the roller 15 on the lower support rod 3 will be in contact with the ground. At this time, a triangular stable structure is formed between the lower support rod 3, the upper support rod 4 and the mounting rod 101, supporting the mounting rod 101 to be vertically inserted into the ground, thus improving the stability of the laser rangefinder 201.

[0036] refer to Figure 3 , Figure 4The positioning assembly includes a second threaded sleeve 14, a retaining ring 902, a retaining ring 902 inclined surface, a spring 16, a retaining ball 11, an inner rod 102, a mounting rod 101 base, and a mounting groove 103. The mounting groove 103 is located at the lower part of the mounting rod 101. An annular groove is formed on the outside of the mounting groove 103. The height of the annular groove is between 2 / 3 and 1 times the diameter of the retaining ball 11 to ensure that the retaining ball 11 does not fall off during the alignment process. An inner rod 102 is cut and formed inside the mounting groove 103. The inner rod 102 is located above the mounting rod 101 base. The lower part of the inner rod 102 is threadedly connected to the mounting rod 101 base. A sleeve 901 is fitted onto the inner rod 102 inside the mounting groove 103. A retaining ring 902 is fixedly connected to the lower end face of the sleeve 901. The mounting rod 101 is equipped with a retaining ring 902 inclined surface and multiple retaining balls 11 inside the ring groove. When the second threaded sleeve 14 is rotated, causing it to slide upward on the surface of the mounting rod 101, the second threaded sleeve 14 will drive the sleeve 901 to move upward through the slider 903. At this time, the sleeve 901 drives the retaining ring 902 to move upward. Under the action of the retaining ring 902 inclined surface, the retaining balls 11 extend out of the ring groove. The retaining balls 11 extending out of the ring groove will abut against the positioning ring groove of the positioning base preset on the tunnel ground. Through the mutual abutment between the positioning ring groove and the retaining balls 11, the axis of the mounting rod 101 is made to fit as close as possible to the axis of the insertion hole, so as to achieve precise positioning of the mounting rod 101, and thus achieve precise positioning of the laser rangefinder 201.

[0037] refer to Figure 4 , Figure 5 A groove 12 is axially formed on the outer surface of the mounting rod 101. A slider 903 is fixedly connected to the upper end face of the sleeve 901. The slider 903 is radially engaged with the groove 12 along the mounting rod 101. The outer surface of the second threaded sleeve 14 is uniformly provided with anti-slip protrusions. The second threaded sleeve 14 is connected to the outer surface of the mounting rod 101 by a threaded connection. The top end of the second threaded sleeve 14 abuts against the lower end face of the slider 903. A spring 16 is disposed inside the mounting groove 103. One end of the spring 16 abuts against the inner wall of the mounting groove 103, and the other end abuts against the end of the sleeve 901. The spring 16 can apply a downward force to the sleeve 901. When the second threaded sleeve 14 moves down, the spring 16 can push the sleeve 901 and the abutment ring 902 down, thereby causing the retaining ball 11 to retract into the annular groove.

[0038] This utility model measurement method uses laser cross-section scanning technology, based on the principle of phase difference of light, to rotate and scan at a frequency of tens of thousands to millions of times per second, covering the entire cross-section of the tunnel. By emitting a laser beam and receiving the reflection signal from the surface of the object, the three-dimensional coordinates (X, Y, Z) and reflection intensity information of the target object are quickly obtained, forming high-density point cloud data. This data is compared with existing position features to calculate deformation data. This is a publicly disclosed technology.

[0039] In use, first level the ground to ensure a horizontal surface. Then, use a drilling device to drill a vertically downward circular hole, removing any excess material to form a cylindrical positioning base. Next, use a boring tool or other machining equipment to machine a positioning ring groove on the inner wall of the positioning base. Install the mounting rod 101 into the positioning base on the ground inside the tunnel, with the lower surface of the mounting rod 101 fitting against the lower surface of the positioning base. Rotate the second threaded sleeve 14, causing the slider 903, sleeve 901, and abutment ring 902 to move. The abutment ring 902 pushes the retaining ball 11 outward, and the retaining ball 11 engages with the positioning groove of the positioning base for positioning. Then, rotate the second threaded sleeve 14... A threaded sleeve 6 drives the mounting ring 5, upper support rod 4, and lower support rod 3 to extend downwards. Roller 15 contacts the ground for auxiliary centering and positioning. The positioning component enables the axis of the mounting rod 101 to fit as closely as possible to the axis of the positioning base, thereby allowing the laser ranging component to be accurately positioned at the measurement point along with the mounting rod 101. Bubble level 17 works with the support component to assist in horizontal positioning, ensuring that the positioning accuracy and horizontal accuracy of the device meet the measurement accuracy requirements. Then, the tunnel deformation data is directly collected through the laser rangefinder. The precise positioning of the laser rangefinder 201 improves the efficiency of the data collection work.

[0040] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A subway tunnel convergence deformation measuring device, characterized in that, It includes a mounting rod, a bubble level, a laser rangefinder assembly, a support assembly, and a positioning assembly; the mounting rod is set vertically, and a bubble level is fixedly connected to the side of the mounting rod, the laser rangefinder assembly is located on the upper part of the mounting rod, and the support assembly is located in the middle of the mounting rod to support the mounting rod; The positioning component is located at the lower part of the mounting rod. The positioning component includes a retaining ring, a retaining ring inclined surface, a sleeve, a retaining ball, and a mounting groove. The mounting groove is located at the lower part of the mounting rod. The retaining ring, the retaining ring inclined surface, and the retaining ball are all located inside the mounting groove. The retaining ball is located above the retaining ring inclined surface and is in contact with the retaining ring inclined surface. The sleeve moves upward, causing the retaining ring inclined surface to move upward, so that the retaining ball extends out, thereby accurately installing the mounting rod in the preset positioning base.

2. The subway tunnel convergence deformation measuring device according to claim 1, characterized in that: The positioning assembly also includes an inner rod and a mounting rod base. An annular groove is provided on the outside of the mounting groove. The height of the annular groove is between 2 / 3 and 1 times the diameter of the ball to ensure that the ball does not fall off during the alignment process. An inner rod is cut and formed inside the mounting groove. The inner rod is located above the mounting rod base, and the lower part of the inner rod is threaded to the mounting rod base.

3. The subway tunnel convergence deformation measuring device according to claim 2, characterized in that: The positioning assembly also includes a sleeve, which is fitted onto the inner rod inside the mounting groove. A retaining ring is located at the lower end of the sleeve, and the retaining ring has a retaining ring bevel. The retaining ring is fixedly connected to the lower end face of the sleeve, and multiple retaining balls are set inside the ring groove.

4. The subway tunnel convergence deformation measuring device according to claim 2, characterized in that: The positioning assembly also includes an axial groove and a slider. The groove is formed axially on the outer surface of the mounting rod, and the slider is fixedly connected to the upper end face of the sleeve. The slider engages with the groove radially along the mounting rod.

5. The subway tunnel convergence deformation measuring device according to claim 2, characterized in that: The positioning component also includes a second threaded sleeve. The outer surface of the second threaded sleeve is uniformly provided with anti-slip protrusions. The second threaded sleeve is connected to the outer surface of the mounting rod by a threaded connection. The top of the second threaded sleeve abuts against the lower end face of the slider.

6. The subway tunnel convergence deformation measuring device according to claim 2, characterized in that: The positioning assembly also includes a spring, which is coaxially arranged with the inner rod and is located inside the mounting groove. One end of the spring abuts against the inner wall of the mounting groove, and the other end abuts against the end of the sleeve.

7. The subway tunnel convergence deformation measuring device according to claim 1, characterized in that: The support assembly includes a first threaded sleeve and a mounting ring. The first threaded sleeve is threadedly connected to the middle of the mounting rod, and the mounting ring is sleeved on the mounting rod. The lower end face of the first threaded sleeve contacts the upper end face of the mounting ring, and the lower end of the mounting ring is hinged to the upper end of the upper support rod.

8. The subway tunnel convergence deformation measuring device according to claim 7, characterized in that: The support assembly also includes a lower support rod, a lower support rod and a roller. The lower end of the lower support rod is rotatably connected to the roller. The middle part of the lower support rod is hinged to the lower end of the upper support rod, and the upper end of the lower support rod is hinged to the lower middle part of the mounting rod.

9. The subway tunnel convergence deformation measuring device according to claim 1, characterized in that: The laser ranging assembly includes a laser rangefinder, a shaft, and a U-shaped support frame. The laser rangefinder is fitted with the shaft through a shaft hole, allowing it to rotate up and down to adjust the angle. The shaft hole is located in the middle of the U-shaped support frame and is connected to the U-shaped support frame. The U-shaped support frame is fixedly connected to the upper end face of the mounting rod.

10. The subway tunnel convergence deformation measuring device according to claim 1, characterized in that: The bubble level is located in the upper part of the mounting rod and is fixedly connected to the mounting rod. The distance between the bubble level and the first threaded sleeve is greater than the upward movement stroke of the support assembly.

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