Tunnel steel ring piece settlement inspection device

Abstract

The utility model provides a tunnel steel ring sheet settlement inspection device, which comprises a frame, an electric control component is arranged on the frame, and arm extension components capable of swinging are arranged on two sides of the electric control component; a vehicle bottom plate is arranged below the vehicle frame, idler wheels are arranged below the vehicle bottom plate, and a buffering mechanism is arranged between the idler wheels and the vehicle frame. The inspection device can move along the track, rapidly scan the inner wall of the whole tunnel and obtain state information of each section of steel ring piece in real time, the reliability of a measurement result is ensured through a data acquisition mode based on the electromagnetic induction principle, meanwhile, the data processing flow is simplified, the intelligent level of tunnel maintenance work is effectively improved, and the maintenance efficiency is improved. Powerful support is provided for guaranteeing the safety of the tunnel steel ring sheet structure, and the problem that traditional steel ring sheet settlement data acquisition needs manual acquisition is solved.

Description

Technical Field

[0001] The utility model relates to the field of steel ring piece maintenance, in particular to a tunnel steel ring piece settlement inspection device. Background Art

[0002] Tunnel engineering is a crucial component of modern transportation, playing an irreplaceable role in urban underground space development and mountain crossings. With the acceleration of urbanization and the growing demand for transportation, higher requirements are being placed on the safety and durability of tunnels. Tunnel structures, exposed to complex geological environments for extended periods, are susceptible to factors such as ground pressure and groundwater erosion, leading to structural deformation and subsidence. These issues not only affect the normal operation of tunnels but, in severe cases, can even threaten their safety.

[0003] Therefore, it is necessary to install steel rings on the inner wall of the tunnel to reduce the risk of tunnel settlement. After the steel rings are installed, it is necessary to regularly monitor the settlement of the sections where the steel rings are installed. Currently, it is necessary to install acceleration sensors at each node of the steel rings. The acceleration sensors must also be powered on regularly, and then the sensor data is collected for analysis to determine the settlement. Acceleration sensors are relatively expensive, and when collecting data during daily inspections, there is no more convenient way to collect data except manual collection. Therefore, a device that is more convenient for data collection during daily inspections is needed. Utility Model Content

[0004] The main purpose of the utility model is to provide a tunnel steel ring segment settlement inspection device, which solves the problem that traditional steel ring segment settlement data collection requires manual collection.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a tunnel steel ring plate settlement inspection device, the inspection device includes a frame, an electric control component is provided on the frame, and swingable arm extension components are arranged on both sides of the electric control component;

[0006] A vehicle bottom plate is provided under the vehicle frame, a roller is provided under the vehicle bottom plate, and a buffer mechanism is provided between the roller and the vehicle frame;

[0007] The arm extension component comprises a rotating shaft, a hydraulic seat is provided on the rotating shaft, a retractable multi-stage hydraulic cylinder is provided on the hydraulic seat, and a second sensor is provided on the top of the multi-stage hydraulic cylinder.

[0008] In a preferred embodiment, the electric control component includes a power supply, one side of the power supply is connected to a first resistor and a second resistor, the first resistor and the second resistor are connected in parallel, and one end of the first resistor is electrically connected to the second inductor;

[0009] A third resistor is provided on the other side of the power supply, and one end of the third resistor is electrically connected to the second inductor;

[0010] A detection circuit is further provided between the second resistor and the third resistor. The detection circuit is provided with an emergency switch and an integrated voltmeter. The integrated voltmeter is used to detect voltage changes and transmit data information to the memory.

[0011] The electric control component is also provided with a tightening wheel, which is used to tighten the wire between the second inductor and the power supply.

[0012] In the preferred embodiment, a drive motor is further provided in the vehicle frame, and the drive motor is connected to the roller via a chain transmission;

[0013] Limiting support plates are also provided on both sides of the frame, which are used to limit the swing angle of the arm span assembly.

[0014] In the preferred embodiment, the buffer mechanism includes a roller frame, the lower portion of the roller frame is connected to the roller shaft, a plurality of guide shafts are provided above the roller frame, and a buffer spring is provided between the guide shaft and the frame;

[0015] A hydraulic buffer is also provided between the guide shafts.

[0016] In the preferred embodiment, push supports are provided on both sides of the frame, and push support plates are provided at the front ends of the push supports;

[0017] There are jacking brackets on both sides of the hydraulic seat, and a jacking hydraulic cylinder is provided between the jacking bracket and the jacking support plate. The jacking hydraulic cylinder is used to adjust the flip angle of the multi-stage hydraulic cylinder.

[0018] In the preferred embodiment, arm span supports are provided on both sides above the vehicle floor, the rotating shaft is arranged between the arm span supports, and an electromagnetic damper is further provided between the end of the rotating shaft and the arm span supports.

[0019] The utility model provides a tunnel steel ring segment settlement inspection device, which has the following beneficial effects:

[0020] 1. The technical solution of combining pre-buried monitoring devices with an automated inspection system can significantly improve the efficiency and accuracy of tunnel steel ring settlement monitoring. This not only reduces reliance on expensive acceleration sensors, but also eliminates the need for the resistance wire in this case to be energized permanently, only during inspections. This automation also reduces the cost and workload of manual inspections.

[0021] 2. The inspection device can move along the track and quickly scan the entire tunnel wall, obtaining real-time status information on each steel ring segment. The data acquisition method based on the principle of electromagnetic induction ensures the reliability of the measurement results and simplifies the data processing process. This technology effectively improves the intelligence level of tunnel maintenance work and provides strong support for ensuring the safety of the tunnel steel ring segment structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and examples:

[0023] Figure 1 This is a schematic diagram of the steel ring piece of the utility model;

[0024] Figure 2 It is an axonometric view of the inspection device of the present utility model;

[0025] Figure 3 This is a schematic diagram of the layout of the inspection device of the utility model;

[0026] Figure 4 This is a schematic diagram of the layout of the steel ring pieces of the utility model;

[0027] Figure 5 This is a schematic diagram of the Wheatstone bridge circuit of the utility model;

[0028] Figure 6 This is a schematic diagram of the shearing of the resistance wire of the utility model;

[0029] Figure 7 It is a corresponding schematic diagram of the first sensor and the second sensor of the utility model;

[0030] Figure 8 This is a bottom axonometric view of the inspection device of the present invention;

[0031] Figure 9 It is a cross-sectional view of the buffer mechanism of the utility model;

[0032] Figure 10 This is a structural diagram of the tensioning pulley of the utility model;

[0033] Figure 11 It is a schematic diagram of the utility model with the arm span assembly folded;

[0034] Figure 12 It is a partial view of the arm span assembly of the utility model.

[0035] In the figure: steel ring 1; monitoring device 2; resistance wire 201; first sensor 202; inspection device 3; vehicle frame 4; roller 401; vehicle bottom plate 402; arm support 403; pushing support 404; buffer mechanism 405; drive motor 406; roller frame 407; guide shaft 408; hydraulic buffer 409; electronic control component 5; power supply 501; first resistor 502; second resistor 503; third resistor 504; integrated voltmeter 505; emergency switch 506; take-up wheel 507; arm assembly 6; rotating shaft 601; pushing bracket 602; hydraulic seat 603; multi-stage hydraulic cylinder 604; second sensor 605; pushing hydraulic cylinder 606; pushing support plate 607; limit support plate 608. DETAILED DESCRIPTION

[0036] Example 1

[0037] like Figure 1-12 As shown, a tunnel steel ring segment settlement inspection device, the inspection device 3 includes a frame 4, the frame 4 is provided with an electric control component 5, and swingable arm extension components 6 are arranged on both sides of the electric control component 5;

[0038] A vehicle bottom plate 402 is provided below the vehicle frame 4, a roller 401 is provided below the vehicle bottom plate 402, and a buffer mechanism 405 is provided between the roller 401 and the vehicle frame 4;

[0039] The arm span assembly 6 includes a rotating shaft 601 , a hydraulic seat 603 is provided on the rotating shaft 601 , a retractable multi-stage hydraulic cylinder 604 is provided on the hydraulic seat 603 , and a second sensor 605 is provided at the top of the multi-stage hydraulic cylinder 604 .

[0040] In a preferred embodiment, the electric control component 5 includes a power supply 501 , one side of the power supply 501 is connected to a first resistor 502 and a second resistor 503 , the first resistor 502 and the second resistor 503 are connected in parallel, and one end of the first resistor 502 is electrically connected to the second inductor 605 ;

[0041] A third resistor 504 is provided on the other side of the power supply 501 , and one end of the third resistor 504 is electrically connected to the second inductor 605 ;

[0042] A detection circuit is further provided between the second resistor 503 and the third resistor 504. The detection circuit is provided with an emergency switch 506 and an integrated voltmeter 505. The integrated voltmeter 505 is used to detect voltage changes and transmit data information to the memory.

[0043] The electronic control component 5 is further provided with a tightening wheel 507 , which is used to tighten the wire between the second sensor 605 and the power supply.

[0044] In the preferred embodiment, the frame 4 is further provided with a drive motor 406, and the drive motor 406 is connected to the roller 401 via a chain transmission;

[0045] Limiting support plates 608 are further provided on both sides of the vehicle frame 4 , and the limiting support plates 608 are used to limit the swing angle of the arm span assembly 6 .

[0046] In the preferred embodiment, the buffer mechanism 405 includes a roller frame 407, the lower portion of the roller frame 407 is connected to a roller shaft, a plurality of guide shafts 408 are provided above the roller frame 407, and a buffer spring is provided between the guide shafts 408 and the vehicle frame 4;

[0047] A hydraulic buffer 409 is also provided between the guide shafts 408 .

[0048] In the preferred embodiment, push supports 404 are further provided on both sides of the vehicle frame 4, and a push support plate 607 is provided at the front end of the push support 404;

[0049] Pushing brackets 602 are provided on both sides of the hydraulic seat 603 , and a pushing hydraulic cylinder 606 is provided between the pushing bracket 602 and the pushing support plate 607 . The pushing hydraulic cylinder 606 is used to adjust the flip angle of the multi-stage hydraulic cylinder 604 .

[0050] In the preferred embodiment, arm support 403 is provided on both sides above the vehicle bottom plate 402 , the rotating shaft 601 is arranged between the arm support 403 , and an electromagnetic damper is further provided between the end of the rotating shaft 601 and the arm support 403 .

[0051] Example 2

[0052] Further illustrate with reference to Example 1, Figure 1-12 The structure shown is a method for inspecting the settlement of a tunnel steel ring segment, the method comprising:

[0053] S1. Pre-embed a monitoring device 2 on each steel ring 1 and lay the steel ring 1 on the inner wall of the tunnel;

[0054] S2, placing the inspection device 3 on the tunnel track;

[0055] S3. Open the arm extension components 6 on both sides of the inspection device 3, start the push hydraulic cylinder 606 to pull the rotating shaft 601, pull the multi-stage hydraulic cylinder 604 to a horizontal state, and make the second sensor 605 at the top of the multi-stage hydraulic cylinder 604 unfold horizontally;

[0056] S4, the second sensor 605 on the arm span assembly 6 is aligned with the first sensor 202;

[0057] S5, the electric control component 5 energizes the second sensor 605 on one side of the arm span component 6,

[0058] S6. The second inductor 605 energizes the first inductor 202. The second inductor 605 on the other side receives the current passing through the monitoring device 2. A transmitting coil is provided on one side of the second inductor 605, and a receiving coil is provided on the other side. The first inductor 202 is provided at both ends of the resistance wire 201. The first inductor 202 on one side is provided with a transmitting coil, and the other side is provided with a receiving coil. The transmitting coil on one side of the second inductor 605 corresponds to the receiving coil on the first inductor 202, and the receiving coil on one side of the second inductor 605 corresponds to the transmitting coil on the first inductor 202, forming a loop.

[0059] S7, the electronic control component 5 measures the voltage change, determines whether the steel ring 1 has settled according to the voltage change, and stores the monitoring data;

[0060] S8. Repeat steps S4-S7 to complete the inspection of each steel ring segment.

[0061] In the preferred embodiment, in step S1, a groove for burying the monitoring device 2 is preset on the steel ring 1, and the monitoring device 2 is buried in the groove. An insulating coating is provided around the groove to isolate the electrical conductivity between the resistance wire 201 and the steel ring;

[0062] The monitoring device 2 and the steel ring piece 1 are filled and bonded with epoxy resin glue.

[0063] In a preferred embodiment, in step S4, the second inductor 605 and the first inductor 202 are electromagnetic induction sensors. The second inductor 605 is connected to the power supply 501 to generate a magnetic field, and the first inductor 202 converts the magnetic field into electrical energy.

[0064] In the preferred embodiment, in step S7, when the steel ring piece 1 sinks, the resistance wire 201 buried in the groove will be stretched or sheared, and the electronic control component 5 measures the voltage change in the bridge through the Wheatstone bridge principle to determine whether the resistance wire 201 is stretched.

[0065] A Wheatstone bridge circuit consists of the following components:

[0066] Power supply 501: provides power to the entire circuit;

[0067] A first resistor 502 and a second resistor 503: the two resistors are connected in parallel, and one end of the first resistor is connected to the second inductor 605;

[0068] The third resistor 504: one end of this resistor is also connected to the second inductor 605;

[0069] Detection circuit: includes emergency switch 506 and integrated voltmeter 505, used to monitor and record voltage changes;

[0070] Resistance wire 201: as the resistance to be measured, pre-buried in the groove of the steel ring piece 1;

[0071] When the steel ring settles, the resistor wire 201 embedded within it may be stretched or sheared, causing its resistance value to change. At this point, the power supply 501 in the electronic control assembly 5 supplies power, forming a complete bridge circuit. If the resistance of the resistor wire 201 changes, the bridge will no longer be balanced, generating a voltage difference across one of the bridge's diagonals. This voltage difference can be measured using the integrated voltmeter 505.

[0072] Specifically, in the absence of settlement, assuming that the first resistor 502, the second resistor 503, and the third resistor 504 are all known standard resistors, and that the bridge they form with the resistance wire 201 is balanced, meaning that the voltages on both sides are equal. Once the resistance wire 201 deforms due to settlement, its resistance value changes, disrupting the original equilibrium state, a measurable voltage difference will be generated across the diagonal lines of the bridge. By analyzing this voltage change, the settlement of the steel ring can be inferred.

[0073] There are four resistors: R1, R2, R3 and Rx (resistance to be measured), as well as a power supply V and a detection instrument (usually a voltmeter or ammeter).

[0074] R1 / R2=Rx / R3

[0075] definition:

[0076] R1 = first resistor 502

[0077] R2 = Second resistor 503

[0078] R3 = the third resistor 504

[0079] Rx = resistance wire 201

[0080] When the steel ring does not sink, the resistance of the resistance wire (Rx) is known and the bridge is in a balanced state. At this time, the voltages at both ends are equal, that is:

[0081] VAB=VCD

[0082] A, B, C and D represent the four nodes of the bridge.

[0083] If the steel ring sinks, causing the resistance of the resistor wire (Rx) to change, assuming the changed resistance is Rx', the bridge will lose balance. At this time, a voltage difference ΔV will be generated on the diagonal AC. This voltage difference can be measured by the integrated voltmeter 505. According to Kirchhoff's voltage law, we can get:

[0084] Ideally, when the bridge is balanced, that is, when there is no voltage difference across the test instrument, the following conditions are met:

[0085] VAC=VAB-VBC

[0086] Since VAB is a constant voltage provided by the power supply, and VBC is affected by Rx, ΔV = VAC will not be zero, which will produce a measurable voltage difference at both ends of the diagonal of the bridge. By analyzing this voltage change, the settlement of the steel ring can be inferred;

[0087] In the preferred embodiment, the inspection device 3 includes a frame 4, on which an electric control component 5 is provided, and on both sides of the electric control component 5 are arranged swingable arm span components 6;

[0088] A vehicle bottom plate 402 is provided below the vehicle frame 4, a roller 401 is provided below the vehicle bottom plate 402, and a buffer mechanism 405 is provided between the roller 401 and the vehicle frame 4;

[0089] The arm span assembly 6 includes a rotating shaft 601 , a hydraulic seat 603 is provided on the rotating shaft 601 , a retractable multi-stage hydraulic cylinder 604 is provided on the hydraulic seat 603 , and a second sensor 605 is provided at the top of the multi-stage hydraulic cylinder 604 .

[0090] In the preferred embodiment, arm support 403 is provided on both sides above the vehicle bottom plate 402 , the rotating shaft 601 is arranged between the arm support 403 , and an electromagnetic damper is further provided between the end of the rotating shaft 601 and the arm support 403 .

[0091] In a preferred embodiment, the electric control component 5 includes a power supply 501 , one side of the power supply 501 is connected to a first resistor 502 and a second resistor 503 , the first resistor 502 and the second resistor 503 are connected in parallel, and one end of the first resistor 502 is electrically connected to the second inductor 605 ;

[0092] A third resistor 504 is provided on the other side of the power supply 501 , and one end of the third resistor 504 is electrically connected to the second inductor 605 ;

[0093] A detection circuit is further provided between the second resistor 503 and the third resistor 504. The detection circuit is provided with an emergency switch 506 and an integrated voltmeter 505. The integrated voltmeter 505 is used to detect voltage changes and transmit data information to the memory.

[0094] The electronic control component 5 is further provided with a tightening wheel 507 , which is used to tighten the wire between the second sensor 605 and the power supply.

[0095] In the preferred embodiment, the frame 4 is further provided with a drive motor 406, and the drive motor 406 is connected to the roller 401 via a chain transmission;

[0096] Limiting support plates 608 are further provided on both sides of the vehicle frame 4 , and the limiting support plates 608 are used to limit the swing angle of the arm span assembly 6 .

[0097] In the preferred embodiment, the buffer mechanism 405 includes a roller frame 407, the lower portion of the roller frame 407 is connected to a roller shaft, a plurality of guide shafts 408 are provided above the roller frame 407, and a buffer spring is provided between the guide shafts 408 and the vehicle frame 4;

[0098] A hydraulic buffer 409 is also provided between the guide shafts 408 .

[0099] In the preferred embodiment, push supports 404 are further provided on both sides of the vehicle frame 4, and a push support plate 607 is provided at the front end of the push support 404;

[0100] Pushing brackets 602 are provided on both sides of the hydraulic seat 603 , and a pushing hydraulic cylinder 606 is provided between the pushing bracket 602 and the pushing support plate 607 . The pushing hydraulic cylinder 606 is used to adjust the flip angle of the multi-stage hydraulic cylinder 604 .

[0101] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A tunnel steel ring segment settlement inspection device, characterized by: The inspection device (3) comprises a vehicle frame (4), an electric control component (5) is provided on the vehicle frame (4), and swingable arm span components (6) are arranged on both sides of the electric control component (5); A vehicle bottom plate (402) is provided below the vehicle frame (4), a roller (401) is provided below the vehicle bottom plate (402), and a buffer mechanism (405) is provided between the roller (401) and the vehicle frame (4); The arm span assembly (6) comprises a rotating shaft (601), a hydraulic seat (603) is provided on the rotating shaft (601), a retractable multi-stage hydraulic cylinder (604) is provided on the hydraulic seat (603), and a second sensor (605) is provided at the top end of the multi-stage hydraulic cylinder (604).

2. According to claim 1, a tunnel steel ring segment settlement inspection device is characterized by: The component (5) includes a power supply (501), one side of the power supply (501) is connected to a first resistor (502) and a second resistor (503), the first resistor (502) and the second resistor (503) are connected in parallel, and one end of the first resistor (502) is electrically connected to the second inductor (605); A third resistor (504) is provided on the other side of the power supply (501), and one end of the third resistor (504) is electrically connected to the second inductor (605); A detection circuit is further provided between the second resistor (503) and the third resistor (504), and an emergency switch (506) and an integrated voltmeter (505) are provided on the detection circuit. The integrated voltmeter (505) is used to detect voltage changes and transmit data information to a memory; A tightening wheel (507) is also provided in the electric control component (5), and the tightening wheel (507) is used to tighten the wire between the second sensor (605) and the power supply.

3. The tunnel steel ring segment settlement inspection device according to claim 1, characterized in that: A driving motor (406) is also provided in the vehicle frame (4), and the driving motor (406) is connected to the roller (401) via a chain transmission; Limiting support plates (608) are also provided on both sides of the vehicle frame (4), and the limiting support plates (608) are used to limit the swing angle of the arm span assembly (6).

4. The tunnel steel ring segment settlement inspection device according to claim 1, characterized in that: The buffer mechanism (405) includes a roller frame (407), the lower portion of the roller frame (407) is connected to a roller shaft, a plurality of guide shafts (408) are provided above the roller frame (407), and a buffer spring is provided between the guide shafts (408) and the vehicle frame (4); A hydraulic buffer (409) is also provided between the guide shafts (408).

5. The tunnel steel ring segment settlement inspection device according to claim 1, characterized in that: Pushing supports (404) are further provided on both sides of the vehicle frame (4), and a pushing support plate (607) is provided at the front end of the pushing supports (404); Pushing brackets (602) are provided on both sides of the hydraulic seat (603), and a pushing hydraulic cylinder (606) is provided between the pushing brackets (602) and the pushing support plate (607). The pushing hydraulic cylinder (606) is used to adjust the turning angle of the multi-stage hydraulic cylinder (604).

6. The tunnel steel ring segment settlement inspection device according to claim 1, characterized in that: Arm support brackets (403) are provided on both sides above the vehicle bottom plate (402), a rotating shaft (601) is arranged between the arm support brackets (403), and an electromagnetic damper is further provided between the end of the rotating shaft (601) and the arm support brackets (403).

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