Large-span tunnel mid-partition wall disease detection auxiliary device

Abstract

The utility model relates to the technical field of tunnel engineering detection, in particular to a large-span tunnel middle partition wall disease detection auxiliary device which comprises a hanging rail, a moving mechanism and a radar mechanism. The moving mechanism comprises a traction piece and a cable, the traction piece is movably connected with the hanging rail, one end of the cable is connected with the traction piece, and the traction piece is driven to wind and unwind the cable; the radar mechanism comprises a ground penetrating radar, a radar carrying box and a fastener, the radar carrying box is connected with the other end of the cable, the ground penetrating radar is arranged in the radar carrying box through the fastener, and the fastener is adjusted to move towards the to-be-detected mid-partition wall so that the ground penetrating radar can be attached to the to-be-detected mid-partition wall. According to the device, the ground penetrating radar can detect the middle partition wall to be detected in the horizontal direction and the vertical direction, the detection accuracy is improved, the structure is simple, operation is easy, and the safety of operators and the efficiency of disease detection work are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering detection, in particular to an auxiliary device for detecting partition wall defects in a large-span tunnel. Background Art

[0002] When the tunnel span is large or the surrounding rock quality is poor, partial excavation methods such as the double-side wall pilot method and the middle partition wall method are often used for tunnel section construction. This type of construction method divides the tunnel section into multiple pilot holes for separate excavation, and constructs temporary middle partition walls between the pilot holes to improve the stability of the tunnel structure. However, under the influence of multiple factors such as blasting disturbance, uneven settlement, and external load interference, the middle partition wall of a large-span tunnel is prone to cracks, concrete shedding, voids and other defects, which in turn affect the overall structural safety of the tunnel. For the detection of middle partition wall defects in large-span tunnels, high-frequency ground penetrating radar is one of the effective detection equipment. Ground penetrating radar transmits high-frequency electromagnetic waves to penetrate the middle partition wall. When encountering different media, the electromagnetic waves will be reflected, transmitted or refracted, thereby detecting various defects inside the middle partition wall.

[0003] At present, when high-frequency ground penetrating radar is used to detect defects in large-span tunnel partition walls, technicians are often used in aerial hanging baskets or elevated work vehicles to carry out defect detection. However, this detection method has many inconveniences and has the disadvantages of high risk and low detection efficiency. At the same time, manual high-altitude operations are limited by the narrow working space in the tunnel, and it is difficult to ensure that the ground penetrating radar and the tunnel partition wall are in close contact for a long time and that the ground penetrating radar moves continuously at a uniform speed, which in turn affects the detection results of tunnel partition wall defects. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a large-span tunnel partition wall disease detection auxiliary device which improves the operator's safety and the accuracy of the detection results.

[0005] The utility model provides an auxiliary device for detecting defects in partition walls in large-span tunnels, comprising:

[0006] A hanging rail, the hanging rail is arranged in close contact with the middle partition wall to be tested;

[0007] A moving mechanism, the moving mechanism comprising a traction member and a cable, the traction member being movably connected to the hanging rail, one end of the cable being connected to the traction member, and the traction member being driven to retract and release the cable;

[0008] A radar mechanism, wherein the radar mechanism comprises a ground penetrating radar, a radar carrying box and a fastener, wherein the radar carrying box is connected to the other end of the cable, and the ground penetrating radar is arranged in the radar carrying box through the fastener, and the fastener is adjusted to move toward the middle partition wall to be tested so that the ground penetrating radar fits the middle partition wall to be tested.

[0009] Optionally, a shock-absorbing spring wheel is provided at the bottom of the radar carrying box on a side close to the middle partition wall to be tested.

[0010] Optionally, the radar carrying box is made of high-strength organic glass, and the fasteners are made of carbon fiber composite materials.

[0011] Optionally, it also includes an elastic member, which is sleeved on the outer circumference of the cable, and one end of the elastic member is connected to the traction member, and the other end is connected to the radar carrying box.

[0012] Optionally, the traction member includes a speed regulating motor and a speed encoder, the speed regulating motor is used to control the retraction and extension of the cable, and the speed encoder receives the retraction and extension speed of the cable.

[0013] Optionally, the hanging rail is a closed hollow structure, and rollers and tracks suitable for the movement of the rollers are arranged inside the hanging rail, and the rollers are connected to the traction member.

[0014] Optionally, fixing plates are provided at both ends of the hanging rail, the fixing plates are connected to the hanging rail via fixing members, and the fixing members extend through the hanging rail into the middle partition wall to be tested.

[0015] Optionally, an anchoring agent is coated on a surface of a portion of the fixing member located on the partition wall to be tested.

[0016] Optionally, a reflective sheet is provided on the fixing plate.

[0017] Compared with the prior art, the technical solution provided by the embodiment of the utility model has the following beneficial effects:

[0018] The embodiment of the utility model provides an auxiliary device for detecting defects in partition walls of large-span tunnels. By arranging a traction member and a cable, the traction member can move along the extension direction of the hanging rail to drive the radar carrying box to move along the extension direction of the hanging rail, thereby realizing the detection of the middle partition wall to be measured by the ground penetrating radar in the horizontal direction. The traction member is driven to retract and release the cable, thereby driving the radar carrying box to move in the extension direction perpendicular to the hanging rail, that is, realizing the detection of the middle partition wall to be measured by the ground penetrating radar in the vertical direction. The traction member can control the cable to be retracted and released at a uniform speed, so that the radar carrying box can move at a uniform speed, thereby ensuring that the detection radar continuously moves at a uniform speed to detect the middle partition wall to be measured. At the same time, by arranging a fastener connected to the ground penetrating radar, the ground penetrating radar is prevented from slipping from the radar carrying box. By adjusting the fastener, the ground penetrating radar can be ensured to fit the middle partition wall to be measured, thereby improving the detection accuracy. By arranging the radar carrying box, the ground penetrating radar is protected and the service life of the ground penetrating radar is extended. The device has a simple structure and is easy to operate, thereby improving the safety of the operator and the efficiency of the defect detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a schematic diagram of the structure of the auxiliary device for detecting defects in partition walls in a large-span tunnel according to an embodiment of the utility model;

[0022] Figure 2 It is a cross-sectional view of the auxiliary device for detecting defects in partition walls in large-span tunnels according to an embodiment of the utility model.

[0023] Among them, 1. hanging rail; 2. fixing plate; 3. fixing part; 4. roller; 5. traction part; 6. elastic part; 7. cable; 8. radar carrying box; 9. fastener; 10. shock-absorbing spring wheel; 11. ground penetrating radar; 12. reflective sheet. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1 and Figure 2 As shown, this embodiment provides a large-span tunnel partition wall disease detection auxiliary device, including a hanging rail 1, a moving mechanism and a radar mechanism.

[0027] Among them, the hanging rail 1 is arranged in close contact with the middle partition wall to be tested; the moving mechanism includes a traction member 5 and a cable 7, the traction member 5 is movably connected to the hanging rail 1, one end of the cable 7 is connected to the traction member 5, and the traction member 5 is driven to retract and release the cable 7; the radar mechanism includes a ground penetrating radar 11, a radar carrying box 8 and a fastener 9, the radar carrying box 8 is connected to the other end of the cable 7, the ground penetrating radar 11 is arranged in the radar carrying box 8 through the fastener 9, and the fastener 9 is adjusted to move toward the middle partition wall to be tested so that the ground penetrating radar 11 is in close contact with the middle partition wall to be tested. Specifically, the device as a whole is fixed to the wall surface of the middle partition wall to be tested by the hanging rail 1, and the traction member 5 can move along the extension direction of the hanging rail 1 to drive the radar carrying box 8 to move along the extension direction of the hanging rail 1, thereby realizing the horizontal detection of the middle partition wall to be tested by the ground penetrating radar 11, and driving the traction member 5 to retract and release the cable 7, thereby driving the radar carrying box 8 to move in the extension direction perpendicular to the hanging rail 1, that is, realizing the vertical detection of the middle partition wall to be tested by the ground penetrating radar 11. By setting the traction member 5 and the cable 7, the ground penetrating radar 11 can detect the middle partition wall to be tested in the horizontal and vertical directions. The traction member 5 The cable 7 can be controlled to be retracted and released at a uniform speed, so that the radar carrying box 8 can move at a uniform speed, thereby ensuring that the detection radar 11 continuously moves at a uniform speed to detect the middle partition wall to be tested. At the same time, by setting a fastener 9 connected to the ground penetrating radar 11, the ground penetrating radar 11 is prevented from slipping from the radar carrying box 8. By adjusting the fastener 9, the ground penetrating radar 11 can be ensured to fit the middle partition wall to be tested, thereby improving the accuracy of detection. By setting the radar carrying box 8, the ground penetrating radar 11 is protected and the service life of the ground penetrating radar 11 is extended. This device has a simple structure and is easy to operate, thereby improving the safety of operators and the efficiency of disease detection.

[0028] Furthermore, a damping spring wheel 10 is provided at the bottom of the radar carrying box 8 on the side close to the middle partition wall to be tested. Specifically, the spring damping wheel 10 is used to contact the middle partition wall to be tested, so as to prevent the radar carrying box 8 from getting stuck or shaking after hitting an obstacle on the middle partition wall to be tested during the detection process, thereby affecting the accuracy of the detection result of the ground penetrating radar 11.

[0029] In addition, the radar carrying box 8 is made of high-strength organic glass, and the fastener 9 is made of carbon fiber composite material. Specifically, the high-strength organic glass can avoid interfering with electromagnetic wave signals, thereby improving the accuracy of the detection results of the ground penetrating radar 11, and the fastener 9 is a carbon fiber composite bolt, which is not only light in weight but also high in strength, making it easier for the cable 7 to drive the radar carrying box 8 to move.

[0030] In some embodiments, an elastic member 6 is further included, which is sleeved on the outer periphery of the cable 7, and one end of the elastic member 6 is connected to the traction member 5, and the other end is connected to the radar carrying box 8. Specifically, the elastic member 6 is a telescopic hose, which can be made of rubber material. Of course, the elastic member 6 can also be made of other elastic materials. The elastic member 6 is arranged on the outer periphery of the cable 7 to prevent the cable 7 from being worn and extend the service life of the cable 7. At the same time, one end of the elastic member 6 is connected to the traction member 5, and the other end is connected to the radar carrying box 8 to prevent the radar carrying box 8 from falling from a high altitude after the cable 7 breaks.

[0031] In other embodiments, the traction member 5 includes a speed regulating motor and a speed encoder, the speed regulating motor is used to control the retraction and extension of the cable 7, and the speed encoder receives the retraction and extension speed of the cable 7. Specifically, the traction member 5 is an electric winch, which controls the cable 7 to be retracted and extended at a uniform speed by adjusting the speed of the speed regulating motor, so that the radar carrying box 8 can move at a uniform speed, thereby ensuring that the detection radar 11 continuously moves at a uniform speed to detect the middle partition wall to be tested, and then the data of the retraction and extension speed of the cable 7 is recorded by the speed encoder for use in interpreting the detection data of the ground penetrating radar 11.

[0032] To ensure that the traction member 5 can move along the extension direction of the hanging rail 1, the hanging rail 1 is a closed hollow structure. The interior of the hanging rail 1 is provided with rollers 4 and a track suitable for the movement of the rollers 4. The rollers 4 are connected to the traction member 5. The traction member 5 moves along the extension direction of the hanging rail 1 through the rollers 4 in the track, thereby driving the radar carrying box 8 to move along the extension direction of the hanging rail 1, thereby realizing the ground penetrating radar 11 to detect the horizontal direction of the middle partition wall to be tested.

[0033] Continue to refer to Figure 1 and Figure 2 As shown, both ends of the hanging rail 1 are provided with fixing plates 2, and the fixing plates 2 are connected to the hanging rail 1 through fixing members 3, and the fixing members 3 pass through the hanging rail 1 and extend into the middle partition wall to be tested. Specifically, the fixing members 3 are high-strength bolts, which pass through the fixing plates 2 and the hanging rail 1 and enter the middle partition wall to be tested, thereby fixing the entire device to the middle partition wall to be tested and ensuring the stability of the device detection.

[0034] Furthermore, the surface of the fixing member 3 located at the middle partition wall to be tested is coated with an anchoring agent, that is, when the fixing member 3 passes through the hanging rail 1, the anchoring agent is applied to the protruding part and wedged into the middle partition wall to be tested, thereby strengthening the anchoring of the entire device to the middle partition wall to be tested.

[0035] Of course, in order to ensure that the total station can measure the displacement of the partition wall, a reflective sheet 12 is provided on the fixing plate 2 .

[0036] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] The above description is only a specific embodiment of the utility model, so that those skilled in the art can understand or implement the utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features of the utility model described herein.

Claims

1. A device for detecting defects in partition walls in large-span tunnels, characterized in that: include: A hanging rail (1), wherein the hanging rail (1) is arranged to fit the middle partition wall to be tested; A moving mechanism, the moving mechanism comprising a traction member (5) and a cable (7), the traction member (5) being movably connected to the hanging rail (1), one end of the cable (7) being connected to the traction member (5), and driving the traction member (5) to retract and release the cable (7); A radar mechanism, the radar mechanism comprising a ground penetrating radar (11), a radar carrying box (8) and a fastener (9), the radar carrying box (8) being connected to the other end of the cable (7), the ground penetrating radar (11) being arranged in the radar carrying box (8) via the fastener (9), and the fastener (9) being adjusted to move toward a middle partition wall to be tested so that the ground penetrating radar (11) is in contact with the middle partition wall to be tested.

2. The auxiliary device for detecting defects in partition walls in large-span tunnels according to claim 1 is characterized in that: A shock-absorbing spring wheel (10) is arranged at the bottom of the radar carrying box (8) on a side close to the middle partition wall to be tested.

3. The auxiliary device for detecting defects in partition walls in large-span tunnels according to claim 1 is characterized in that: The radar carrying box (8) is made of high-strength organic glass, and the fastener (9) is made of carbon fiber composite material.

4. The auxiliary device for detecting defects in partition walls in large-span tunnels according to claim 1 is characterized in that: It also includes an elastic member (6), which is sleeved on the outer circumference of the cable (7), and one end of which is connected to the traction member (5) and the other end of which is connected to the radar carrying box (8).

5. The auxiliary device for detecting defects in partition walls in large-span tunnels according to claim 1 is characterized in that: The traction member (5) comprises a speed regulating motor and a speed encoder, wherein the speed regulating motor is used to control the retraction and extension of the cable (7), and the speed encoder receives the retraction and extension speed of the cable (7).

6. The auxiliary device for detecting defects in partition walls in large-span tunnels according to claim 1 is characterized in that: The hanging rail (1) is a closed hollow structure. A roller (4) and a track suitable for the movement of the roller (4) are arranged inside the hanging rail (1). The roller (4) is connected to the traction member (5).

7. The auxiliary device for detecting defects in partition walls in large-span tunnels according to claim 1 is characterized in that: Both ends of the hanging rail (1) are provided with fixing plates (2), the fixing plates (2) are connected to the hanging rail (1) via fixing members (3), and the fixing members (3) pass through the hanging rail (1) and extend into the middle partition wall to be tested.

8. The auxiliary device for detecting defects in partition walls in large-span tunnels according to claim 7 is characterized in that: The surface of the fixing member (3) located on the partition wall to be tested is coated with an anchoring agent.

9. The auxiliary device for detecting defects in partition walls in large-span tunnels according to claim 7 is characterized in that: A reflective sheet (12) is provided on the fixing plate (2).

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