Multifunctional tunnel lining knocking detection trolley and use method

Abstract

The present application relates to the technical field of tunnel construction, in particular to a multifunctional tunnel lining knocking detection trolley and a use method thereof. The trolley comprises a rack, a plurality of detection tables are arranged on both sides of the rack, and the detection tables are distributed in a step-by-step manner; an electric control cabinet is arranged on the top of the rack, and the electric control cabinet is electrically connected with a power assembly; the power assembly comprises a solid tire, a direction control motor, a speed frequency converter and a driving motor, the solid tire is arranged at the bottom of the rack, and the driving motor is connected with the solid tire through the direction control motor; a flange plate assembly is arranged on the detection table, the flange plate assembly can be adjusted horizontally to adapt to the size of the tunnel lining, and a three-phase frequency conversion driving motor and a solid rubber wheel are adopted to realize safe movement. The trolley supports accurate steering of a non-linear tunnel. The present application solves the problems of low efficiency and poor safety of the traditional detection method, has the functions of detection and construction platform, and significantly improves the detection efficiency and construction safety of the tunnel lining.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, specifically to a multifunctional tunnel lining impact testing trolley and its usage method. Background Technology

[0002] In the field of tunnel lining construction quality inspection, existing inspection technologies have the following significant shortcomings: First, in the secondary lining structure integrity inspection stage, ground-penetrating radar is required for multi-frequency scanning to detect quality defects such as insufficient lining thickness, voids behind the lining, and lack of compaction. The currently commonly used method of using aerial work platforms to carry inspection equipment poses safety hazards such as poor equipment stability during the inspection process and a high risk of personnel falling from heights. Second, for manual inspection of lining surface quality, railway engineering departments typically use mobile steel pipe scaffolding for hammering inspection. This method has three major technical pain points: 1) The scaffolding needs to be equipped with horizontal tie rods to ensure stability, which seriously encroaches on the passage space inside the tunnel and affects the normal passage of construction vehicles; 2) The fastener-type connection structure is prone to stress relaxation during dynamic inspection operations, leading to a decrease in the overall stiffness of the scaffolding and a risk of structural collapse; 3) The coupling between the natural frequency of the scaffolding and the vibration of the inspection operation can easily cause resonance effects, affecting the inspection accuracy. Furthermore, when power supply departments conduct acceptance of pre-buried channels, traditional inspection platforms are difficult to adapt to the varied cross-sectional forms of tunnels, resulting in low efficiency in inspecting the quality of overhead contact lines. Existing testing systems suffer from poor equipment compatibility, high safety risks, and low testing efficiency, severely restricting the reliability of tunnel engineering quality and the controllability of construction progress. Therefore, a more structurally stable lining testing and maintenance trolley is urgently needed in tunnel construction to ensure testing and construction efficiency. Summary of the Invention

[0003] The problem to be solved by the present invention is to provide a lining inspection and maintenance trolley with a more stable structure to ensure inspection and construction efficiency.

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is as follows: a multifunctional tunnel lining impact testing trolley, comprising a frame, with several testing platforms on both sides of the frame, arranged in a stepped manner; solid tires are provided at the four corners of the bottom of the frame, and an electrical control cabinet is provided at the top of the frame, with the electrical control cabinet electrically connected to two sets of power components located at the bottom of the frame; the power components include a direction control motor, a speed inverter, and a drive motor, with the drive motor connected to the solid tires through the direction control motor; a flange plate assembly is provided on the testing platform, which can be laterally adjusted to adapt to the dimensions of the tunnel lining.

[0005] Preferably, the outer end of the testing table is provided with guide wheels.

[0006] Preferably, the flange plate assembly includes a flange plate, a pulley block, a flange plate locking hole, and a flange plate locking bolt. The flange plate is slidably connected to the testing table via the pulley block, and the flange plate locking bolt is disposed on the flange plate and can be connected to the testing table through the flange plate locking hole.

[0007] Preferably, a height adjustment joint is provided between the test stand and the solid tire, which is used to adjust the height of the test stand.

[0008] Preferably, the platform is constructed of an I-beam frame, including I18 steel columns, I18 steel beams, diagonal braces, and I16 steel vertical braces. Each node is connected by high-strength bolts, and the platform is also equipped with a digital display for fine-tuning the direction angle.

[0009] Preferably, a ladder is provided between adjacent testing stations.

[0010] Preferably, the outer edge of the platform is provided with trolley edge protection.

[0011] A method for using a multifunctional tunnel lining impact testing trolley includes the following steps:

[0012] Step 1: Initialize the trolley parameters, adjust the flange width and height adjustment section to match the tunnel cross-section dimensions;

[0013] Step 2: Path planning and trolley positioning. Start the drive motor and control the walking speed through the speed inverter to ensure that the solid tires on both sides rotate at the same speed.

[0014] Step 3: Steering adjustment. Set the steering angle using the digital display for fine-tuning the steering angle, and drive the steering control motor to adjust the wheel set deflection.

[0015] Step 4: Adjust the forward and backward movement of the testing trolley. The forward and backward movement of the testing trolley can be adjusted at any time through the top electrical control cabinet.

[0016] Step 5: Non-destructive testing of the secondary lining, with multiple people working simultaneously to perform and verify the lining by tapping.

[0017] Step Six: Inspection and Repair Construction. Vibration sensors collect impact feedback data. After the inspection is completed, switch to construction mode, repair the lining through the inspection table, and generate an acceptance report.

[0018] The beneficial effects of this invention are as follows:

[0019] Enhanced safety: The use of I-beam frames and solid rubber wheels avoids the risk of collapse associated with traditional scaffolding; remote control function reduces working time at height; emergency stop button and synchronous control system ensure emergency braking.

[0020] Enhanced adaptability: The flange extension and modular height adjustment joints are compatible with various tunnel sections, meeting the requirements for raising the catenary poles.

[0021] Efficiency optimization: Variable frequency drive motors and synchronous control technology improve movement accuracy, directional control motors support stable travel in non-linear tunnels, and the detection cycle is shortened by more than 30%.

[0022] Multifunctional expansion: The trolley functions as both an inspection and construction platform, supporting radar scanning, manual tapping, and subsequent defect repair, reducing redundant equipment investment. Attached Figure Description

[0023] Figure 1 This is a front view of the testing trolley of the present invention;

[0024] Figure 2 This is the present invention. Figure 1 Enlarged schematic diagram of the flange assembly at point A;

[0025] Figure 3 yes Figure 1 Enlarged view at point B in the middle;

[0026] Figure 4 This is a side view of the testing trolley of the present invention;

[0027] Figure 5 This is a schematic diagram illustrating the application scenario of the testing trolley of the present invention;

[0028] Figure 6 This is a flowchart of the method for using the testing trolley of the present invention;

[0029] Figure 7 This is a schematic diagram of the steering principle of the detection trolley of this invention;

[0030] Explanation of reference numerals in the attached drawings: 1. Secondary lining; 2. Testing trolley; 3. Frame; 31. Trolley edge protection; 32. Testing table; 33. Electrical control cabinet; 34. Solid tire; 4. Flange plate assembly; 41. Flange plate; 42. Pulley block; 421. Upper pulley; 422. Lower pulley; 43. Flange plate locking hole; 44. Flange plate locking bolt; 5. Guide wheel; 6. Ladder; 7. Height adjustment section; 8. Power assembly; 81. Direction control motor; 82. Speed ​​inverter; 83. Drive motor; 9. Direction fine-tuning angle digital display. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0032] To address the construction challenges in the prior art, this invention provides a multifunctional tunnel lining impact testing trolley and its usage method. The testing trolley 2 includes a frame 3, which is constructed from an I-beam steel frame. The width and height of the frame 3 are manufactured according to the tunnel cross-section dimensions. The I-beam steel frame includes I18 steel columns, I18 steel beams, diagonal braces, and I16 steel vertical braces. All nodes are connected by high-strength bolts. The frame 3 is also equipped with a digital display 9 for fine-tuning the direction angle.

[0033] The test bench 3 has several testing platforms 32 on both sides, arranged in a stepped manner. Each testing platform 32 uses an I14 type steel frame, with bolts used for secure connections at the joints. Solid tires 34 are installed at each of the four corners of the bottom of the test bench 3. An electrical control cabinet 33 is installed at the top of the test bench 3, and the cabinet is electrically connected to the power components 8 on both sides of the test bench 3. The power components 8 include a direction control motor 81, a speed inverter 82, and a drive motor 83. The drive motor 83 is a three-phase motor. The solid tires 34 are located at the bottom of the test bench 3, on the left and right sides. The drive motors 83 on both sides are connected to the solid tires 34 on the left and right sides via the direction adjustment motors 81 on the left and right sides. The two solid tires 34 at one end of the platform 3 act as driving wheels under the drive motor 83, while the two solid tires 34 at the other end of the platform 3 act as driven wheels. Since the tunnel design is not perfectly straight, the angle of the inspection trolley 2 is adjusted by the direction fine-tuning angle digital display 9 and the direction adjustment motor 81. The direction fine-tuning angle digital display 9 can be used to fine-tune the walking direction to avoid the centerline of the solid tires 34 from being out of parallel. The inspection platform 32 is equipped with a flange plate assembly 4, which can be adjusted laterally to adapt to the tunnel lining size. Flange plate assembly 4 includes a flange plate 41, a pulley block 42, a flange plate locking hole 43, and a flange plate locking bolt 44. The flange plate 41 is slidably connected to the inspection table 32 via the pulley block 42. The flange plate locking bolt 44 is mounted on the flange plate 41 and can be connected to the inspection table 32 through the flange plate locking hole 43. The pulley block 42 consists of an upper pulley 421 and a lower pulley 422. The flange plate locking bolt 44 fixes the telescopic position, allowing the trolley width to be adjusted from 2 to 5 meters. Figure 5 The trolley of the present invention shown can adapt to tunnels with different cross-sections. The width can be dynamically adjusted by extending and retracting the flange plate assembly 4, making it suitable for various tunnel lining cross-sections.

[0034] The outer end of the testing platform 32 at its widest horizontal point on the platform 3 is equipped with guide wheels 5. The guide wheels 5 prevent the testing trolley 2 from colliding with the secondary lining 1 and provide guidance for the forward movement of the testing trolley 2. The testing trolley 2 is equipped with a remote control at the bottom, allowing operation even when the operator is not on the trolley during long-distance travel.

[0035] A height adjustment section 7 is provided between the platform 3 and the solid tire 34. The height adjustment section 7 is used to adjust the height of the platform 3. During tunnel construction, the height of the contact wire pole needs to be increased, and the height adjustment section 7 meets the requirements of the change in cross-sectional height.

[0036] Ladders 6 are provided between adjacent testing stations 32 on the same side of the test platform 3. Ladders 6 facilitate the movement of operators between different testing stations 32 to perform inspection, maintenance, and other work on the entire outer surface of the secondary lining 1. The outer edge of the test platform 3 is equipped with a trolley edge protection 31. The trolley edge protection 31 is made of Φ22 steel bars, with a vertical spacing of 1.5 meters and a height of 1.2 meters. The trolley edge protection 31 ensures the safety of construction personnel.

[0037] A method for using a multifunctional tunnel lining impact testing trolley includes the following steps:

[0038] Step 1: Initialize the trolley parameters, adjust the width of the flange plate 41 and the height adjustment section 7 to match the tunnel cross-section dimensions;

[0039] Step 2: Path planning and trolley positioning. Start the drive motor 83 and control the walking speed through the speed inverter 82 to ensure that the rotation speed of the solid tires 34 on both sides is consistent.

[0040] Step 3: Steering adjustment. Set the steering angle using the digital display 9 for fine-tuning the steering angle, and drive the steering control motor 81 to adjust the wheel set deflection.

[0041] Step 4: Adjust the forward and backward movement of the testing trolley. During the tunnel tapping test, the forward and backward movement of the testing trolley 2 can be adjusted at any time through the top electrical control cabinet 33 according to the needs of the tapping personnel of the engineering section.

[0042] Step 5: Non-destructive testing of the secondary lining. The multi-functional tunnel lining impact testing trolley can replace the aerial work platform for non-destructive testing of the secondary lining. Multiple people can work simultaneously to test problematic sections for verification.

[0043] Step 6: Inspection and Repair Construction. Vibration sensors collect impact feedback data. After the inspection is completed, switch to construction mode, repair the lining through inspection table 32, and generate an acceptance report.

[0044] Figure 7 This is a schematic diagram of the steering principle of the detection trolley of this invention. As shown in the simplified diagram, the center of the solid tire 34 on the left is O1, the center of the solid tire 34 on the right is O2, and the center distance between the two solid tires 34 is 2D. The midpoint of the line segment formed by O1 and O2 is O. When the tunnel is straight, the solid tires 34 on both sides can move forward or backward synchronously. The forward or backward movement is adjusted by the forward or reverse rotation of the drive motor 83, which will not be elaborated further here. If a tunnel is encountered ahead, the steering mechanism will change accordingly. Figure 7As shown, secondary lining 1 exhibits a turning angle α, where L1 and L2 are the tangents before and after the turning angle of secondary lining 1, respectively. 11 and L 22 Then they are parallel lines to L1 and L2, 0 11 and 0 22 These are the corresponding points after 01 and 02 complete the turn, L. 11 L passes through point O1 22 Passing point O 11 If the second lining has a turning angle of α, then L 11 and L 22 The included angle is also α. The solid tire 34 on the left moves forward while the solid tire 34 on the right moves backward to achieve steering. That is, the movement process is that O1 and O2 move clockwise around point O at the same time. After the steering is completed, 01 rotates to 0. 11 At point 02, rotate to 0. 22 For example, taking the solid tire 34 on the left, the center of the solid tire 34 on the left rotates from 01 to 0. 11 The arc length L traversed determines the turning angle α of the detection trolley 2.

[0045] L 11 and L 22 The intersection point is A, and ΔAO1O ≌ ΔAO 11 O, ∠O1AO=∠O 11 AO=β,∠O1OA=∠O 11 OA = θ,

[0046] From the geometric relationships in the diagram, we know that α = 180° - 2β, θ = 90° - β = α / 2, and the center of the solid tire 34 on the left rotates from 01 to 0. 11 The arc length L traversed can be expressed as:

[0047]

[0048] Therefore, we can obtain the turning angle α of the secondary lining 1 and the center distance 2D between the solid tires 34 on the left and right sides from the construction parameters. In this way, we can accurately calculate the distance L of the solid tires 34. The speed V of the solid tires 34 driven by the drive motor 83 is known. L / V is the turning time required for the detection trolley 2, thereby realizing the precise control of the turning of the detection trolley 2.

[0049] This invention solves the problem of inspecting different cross-sections of tunnel lining by setting up an inspection platform 32 on a frame 3, with a retractable flange plate assembly 4 on the inspection platform 32. The adjustable width and height design of the trolley, combined with the power component 8, significantly improves the inspection accuracy and walking stability; the inspection efficiency is increased by 40% compared to traditional methods. In addition, the trolley also functions as a construction platform, optimizing the integrated process of tunnel inspection and repair. The implementation of this invention will promote the development of tunnel inspection technology towards intelligence and efficiency, and has broad engineering application value.

Claims

1. A multifunctional tunnel lining impact testing trolley, characterized in that: The test bench (3) is provided with several test stations (32) on both sides of the test bench (3), and the test stations (32) are arranged in a stepped manner. Solid tires (34) are provided at the four corners of the bottom of the test bench (3), and an electrical control cabinet (33) is provided at the top of the test bench (3). The electrical control cabinet (33) is connected to two sets of power components (8) at the bottom of the test bench (3). The power components (8) include a direction control motor (81), a speed inverter (82) and a drive motor (83). The drive motor (83) is connected to the solid tires (34) through the direction control motor (81). A flange plate assembly (4) is provided on the test station (32). The flange plate assembly (4) can be adjusted laterally to adapt to the tunnel lining size. The outer end of the testing table (32) is provided with a guide wheel (5); The flange plate assembly (4) includes a flange plate (41), a pulley block (42), a flange plate locking hole (43), and a flange plate locking bolt (44). The flange plate (41) is slidably connected to the testing table (32) through the pulley block (42). The flange plate locking bolt (44) is set on the flange plate (41) and can be connected to the testing table (32) through the flange plate locking hole (43). A height adjustment joint (7) is provided between the platform (3) and the solid tire (34), and the height adjustment joint (7) is used to adjust the height of the platform (3); The frame (3) is made of I-beam frame, including I18 steel columns, I18 steel beams, diagonal braces and I16 steel supports. Each node is connected by high-strength bolts. The frame (3) is also equipped with a digital display (9) for fine-tuning the direction angle.

2. The multifunctional tunnel lining impact testing trolley as described in claim 1, characterized in that: A ladder (6) is provided between adjacent testing stations (32).

3. The multifunctional tunnel lining impact testing trolley as described in claim 1, characterized in that: The outer edge of the platform (3) is provided with a trolley edge protection (31).

4. A method for using a multi-functional tunnel lining impact testing trolley, based on the multi-functional tunnel lining impact testing trolley according to claim 1, characterized in that: Includes the following steps: Step 1: Initialize the trolley parameters, adjust the width and height adjustment section (7) of the flange plate (41) to match the tunnel cross-section size; Step 2: Path planning and trolley positioning. Start the drive motor (83) and control the walking speed through the speed inverter (82) to ensure that the rotation speed of the solid tires (34) on both sides is consistent. Step 3: Steering adjustment. Set the steering angle using the direction fine-tuning angle digital display (9) and drive the direction control motor (81) to adjust the wheel set deflection. Step 4: Adjust the forward and backward movement of the testing trolley. Adjust the forward and backward movement of the testing trolley (2) at any time through the top electrical control cabinet (33); Step 5: Non-destructive testing of the secondary lining, with multiple people working simultaneously to perform and verify the lining by tapping. Step 6: Inspection and repair construction. Vibration sensor collects impact feedback data. After inspection, switch to construction mode, repair the lining through the inspection table (32) and generate an acceptance report.

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