An installation structure for a tunnel measurement and detection device

Abstract

The present invention provides an installation structure for a tunnel measurement and detection device, which includes a support arm. The support arm is installed on a detection vehicle. The top of the support arm is detachably connected to a support seat. A support frame is arranged inside the support seat. An activity groove is formed in the middle of the support frame, and a detection device is movably installed in the activity groove. By movably installing the detection device inside the support frame, on the one hand, it can replace manual lifting of the detection device through a mechanical support structure, reducing the labor intensity of operators and ensuring the stability of the contact state between the detection device and the tunnel surface at the same time; on the other hand, through the movable connection method of the bearing and the shaft, when the detection device conducts detection along the depth of the tunnel, if an obstacle is encountered, the part of the detection device exceeding the activity groove will deflect due to resistance. At this time, the detection device can rotate along the axis and rotate into the activity groove, thus playing a role in obstacle avoidance and effectively ensuring the safety of the detection device.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel detection, and particularly relates to an installation structure for a tunnel measurement and detection device. Background Art

[0002] With the rapid development of tunnel construction in China, a large number of tunnels have been built and put into operation. In order to strictly control the quality during the tunnel construction process, a series of detection devices have emerged. Among them, ground penetrating radar, as an important non-destructive detection means in tunnel construction, is now widely used in the process control of line construction and the rectification of diseases in operating lines, and can better meet the engineering needs. However, the detection results of ground penetrating radar are affected by various factors in actual applications, resulting in problems with the accuracy of the detection results.

[0003] The ground penetrating radar mainly consists of five parts: a host (main control unit), a transmitter, a transmitting antenna, a receiver, and a receiving antenna. The transmitting and receiving antennas appear in pairs and are used to transmit radar waves into the ground and receive the radar waves reflected from the ground. The host is a data acquisition system that sends transmission and reception control commands (including parameters such as start and stop times, transmission frequencies, and repetition times) to the transmitter. The transmitter emits radar waves into the ground according to the host command, and the receiver starts data acquisition according to the control command. After sampling and A / D conversion, the received reflected signal is converted into a digital signal and displayed and saved.

[0004] In the tunnel construction projects in some areas, when the ground penetrating radar detects the tunnel vault, it is also necessary for personnel to hold the ground penetrating radar against the vault surface on the vehicle-mounted platform of the detection vehicle. The long-term holding action places a great burden on the operators, and sometimes the ground penetrating radar cannot fit well with the contact surface, thus affecting the accuracy of the measurement data. Summary of the Invention

[0005] The purpose of the present invention is to provide an installation structure for a tunnel measurement and detection device, which solves the problem that when the ground penetrating radar detects the tunnel vault, it is necessary for personnel to hold the ground penetrating radar against the vault surface on the vehicle-mounted platform of the detection vehicle, and the long-term holding action places a great burden on the operators.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An installation structure for a tunnel measurement and detection device includes a support arm, the support arm is installed on a detection vehicle, a support seat is detachably connected to the top of the support arm, a support frame is arranged inside the support seat, an activity slot is opened in the middle of the support frame, and a detection device is movably installed in the activity slot.

[0008] Preferably, a counterweight assembly is provided at the bottom of the detection device, and the counterweight assembly includes at least two connecting rods, which are spaced apart at the bottom of the detection device, one end of the connecting rod is movably connected to the bottom of the detection device, and the other end is movably connected to the counterweight; an elastic member is arranged on the side wall of the movable groove corresponding to the swinging direction of the detection device, and the elastic member is used for resetting the detection device after the swing.

[0009] Preferably, a horizontal displacement groove is provided in the support seat, a linear module is provided in the displacement groove, a support frame is provided on the linear module, and the support frame moves horizontally along the displacement groove under the drive of the linear module.

[0010] Preferably, a cleaning member is provided on the top of the outer peripheral surface of the support frame, and the cleaning member includes a flexible brush, and the flexible brush includes a brush head and a brush plate, the brush head is arranged on the brush plate, and the brush plate is fixed to the outside of the support frame by screws, and the side of the brush head in contact with the tunnel vault is arranged as an open structure, and a sensor is arranged inside the opening structure.

[0011] Preferably, the opening structure may be a W-shaped or a herringbone-shaped structure.

[0012] Preferably, the cleaning member further comprises a rigid shovel, which is arranged on the side of the flexible brush away from the support frame, and the rigid shovel is an arc-shaped steel sheet, one end of which is fixed to the brush plate by screws or rivets.

[0013] Technical effects and advantages of the present invention: Compared with the prior art, the installation structure for a tunnel measurement and detection device proposed by the present invention has the following advantages:

[0014] 1. The present invention is suitable for tunnel detection. By movably installing the detection equipment inside the support frame, on the one hand, the mechanical support structure can replace the manual lifting of the detection equipment, which reduces the labor of the operators while also ensuring the stability of the contact state between the detection equipment and the tunnel surface; on the other hand, through the movable connection method of the bearing and the shaft, when the detection equipment is detecting along the depth of the tunnel, if an obstacle is encountered, the part of the detection equipment that exceeds the movable groove will be deflected by resistance. At this time, the detection equipment can rotate along the axis to the inside of the movable groove, thereby playing a role in avoiding obstacles and effectively ensuring the safety of the detection equipment.

[0015] 2. The present invention corrects the center of gravity of the detection device by setting a counterweight assembly, enabling the detection device to quickly return to the correct position under the gravitational action of the counterweight assembly after obstacle avoidance and resume the state of detecting the tunnel, reducing the recovery time after obstacle avoidance and indirectly improving the detection efficiency. Specifically, both ends of the connecting rod are connected to the bottom of the detection device and the counterweight by means of ball joints, allowing the counterweight to move freely. When the detection device comes into contact with an obstacle, it will deflect, and the counterweight at the bottom will also shift under the pulling of the detection device. When the detection device crosses the obstacle, the counterweight will quickly return under its own gravitational action until the connecting rod and the counterweight return to the vertically perpendicular state. Under the influence of the counterweight, the detection device will also return to the initial state faster and continue to fit the tunnel surface to perform the tunnel detection operation.

[0016] 3. Through the driving action of the linear module (the same as the linear motor, both are prior arts), when the detection device moves along the depth of the tunnel, the detection device will move horizontally left and right under the drive of the linear module, thus changing the straight detection trajectory of the detection device into a wavy detection trajectory, increasing the detection area and making the detection effect more accurate. At the same time, a laser detector (prior art) can also be installed on the side of the support frame during its movement. The laser emitted by the laser detector is used to detect whether there are obstacles on the tunnel surface. If there are obstacles, the control module of the linear module will control the detection device to move horizontally left and right to avoid the obstacles, thus playing a role in avoiding obstacles in advance and further ensuring the safety of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the present invention.

[0018] Figure 2 is Figure 1 a partially enlarged schematic diagram at C in

[0019] Figure 3 is an internal structural schematic diagram of the present invention when viewed from the front.

[0020] Figure 4 is Figure 3 a partially enlarged schematic diagram at A in

[0021] Figure 5 is Figure 3 a sectional view taken along B-B in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. The specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] The present invention provides an installation structure for a tunnel measurement and detection device as shown in Figures 1-5 which includes a support arm 1. The support arm 1 is installed on a detection vehicle. The top of the support arm 1 is detachably connected to a support base 2. One implementation is that the support arm 1 and the support base 2 are fixed by bolts and nuts. The bolt is fixed at the end of the support arm 1 and extends out from a through groove provided in the middle of the support base 2, and then a matching nut is used for locking to achieve the detachable fixation between the support arm 1 and the support base 2. A support frame 3 is provided inside the support base 2. An activity groove 31 is opened in the middle of the support frame 3, and a detection device 4 is movably installed in the activity groove 31. One implementation is that bearings are provided on both sides of the activity groove 31. Rotating shafts are fixedly installed on both sides of the detection device 4, that is, the ground penetrating radar device. The two rotating shafts are respectively assembled into the corresponding bearings, and the top of the detection device 4 should exceed the upper surface of the support frame 3. The longitudinal section of the activity groove 31 can be set into a U-shaped structure, so that the detection device 4 is movably installed in the activity groove 31 through the cooperation of the bearing and the shaft.

[0024] This embodiment is applicable to tunnel detection. By movably installing the detection device 4 inside the support frame 3, it is not necessary for the operator to hold the detection device all the time, reducing the problem that the detection device 4 cannot keep in contact with the tunnel arch top surface due to excessive labor. Among them, the support arm 1 can adopt an automatic lifting structure such as hydraulic, electric or pneumatic to achieve the state where the detection device 4 on the support frame 3 is in contact with the tunnel surface. Through the above settings, on the one hand, the mechanical support structure can replace manual lifting of the detection device 4, reducing the labor of the operator and at the same time ensuring the stability of the contact state between the detection device 4 and the tunnel surface. On the other hand, through the movable connection method of the bearing and the shaft, when the detection device 4 detects along the depth of the tunnel, if an obstacle is encountered, the part of the detection device 4 exceeding the activity groove 31 will be deflected due to resistance. At this time, the detection device 4 can rotate along the axis and rotate into the activity groove 31, thus playing a role in obstacle avoidance and effectively ensuring the safety of the detection device 4.

[0025] A counterweight assembly 5 is provided at the bottom of the detection device 4. The counterweight assembly 5 includes at least two connecting rods 51, which are spaced apart at the bottom of the detection device 4. One end of the connecting rod 51 is movably connected to the bottom of the detection device 4, and the other end is movably connected to a counterweight 52. An elastic member 6 is arranged on the side wall of the movable groove 31 corresponding to the swinging direction of the detection device 4. The elastic member 6 is one of flexible elements such as a return spring and an elastic air cushion. For example, return springs are arranged on the front and rear sides of the movable groove 31 and do not contact the detection device 4 in the initial state. When the end of the detection device 4 swings and sinks into the movable groove 31, the return springs are compressed. When the extrusion force on the detection device 4 is lost, the stored energy of the return springs is released, pushing the detection device 4 back to its original position. The elastic member 6 makes it more convenient for the detection device 4 to return after swinging.

[0026] By providing the counterweight assembly 5, the center of gravity of the detection device 4 is corrected, so that after avoiding an obstacle, the detection device 4 can quickly return to the correct position under the gravity of the counterweight assembly 5 and resume the state of detecting the tunnel, reducing the recovery time after avoiding the obstacle and indirectly improving the detection efficiency. Specifically, both ends of the connecting rod 51 are connected to the bottom of the detection device 4 and the counterweight 52 by ball joints, allowing the counterweight 52 to move freely. When the detection device 4 contacts an obstacle, it will deflect, and the counterweight 52 at the bottom will also shift under the pull of the detection device 4. When the detection device 4 crosses the obstacle, the counterweight 52 will quickly return under its own gravity until the connecting rod 51 and the counterweight 52 return to the vertically perpendicular state. Under the influence of the counterweight 52, the detection device 4 will also return to the initial state faster and continue to perform the action of detecting the tunnel by adhering to the tunnel surface. The shape of the counterweight 52 can be block-shaped, spherical or other shapes.

[0027] A horizontal displacement groove 7 is provided in the support base 2, and a linear module 8 is arranged in the displacement groove 7. A support frame 3 is arranged on the linear module 8, and the support frame 3 moves horizontally along the displacement groove 7 under the drive of the linear module 8.

[0028] Under the driving action of the linear module 8 (the same as the linear motor, both are prior arts), when the detection device 4 moves along the depth of the tunnel, the detection device 4 will move horizontally left and right under the drive of the linear module 8, so that the linear detection trajectory of the detection device 4 changes to a wavy detection trajectory, increasing the detection area and making the detection effect more accurate. At the same time, a laser detector (prior art) can also be added to the side where the support frame 3 travels to detect whether there are obstacles on the tunnel surface by using the laser emitted by the laser detector. If there are obstacles, the control module of the linear module 8 will control the detection device 4 to move horizontally left and right to avoid the obstacles, thus playing a role in avoiding obstacles in advance and further ensuring the safety of the detection device 4.

[0029] Cleaning members are provided at the top of the outer peripheral surface of the support frame 3. The cleaning members include a flexible brush 9 and a rigid spatula 95. The flexible brush 9 includes a brush head 91 and a brush plate 92. The brush head 91 is provided on the brush plate 92 and is fixedly connected between the brush head 91 and the brush plate. The brush plate 92 is fixed to the outer surface of the support frame 3 by screws. One side of the brush head 91 in contact with the tunnel vault is provided with an opening structure 93, and a sensor 94 is provided in the opening structure 93.

[0030] By fixing the flexible brush 9 around the support frame 3, during the movement of the detection device 4, a certain cleaning action can be performed on the surface of the tunnel to be measured in advance, enabling the subsequent detection device 4 to better fit the tunnel surface and reducing the interference of the tunnel surface on the detection device 4.

[0031] The opening structure 93 can be a W-shaped or "human" - shaped structure. By setting the brush head 91 as the opening structure 93, when the opening structure 93 is in the "human" - shaped structure, in the state where the detection device 4 is in contact with the tunnel surface, the brush head 91 is synchronously pressed against the tunnel surface, and both sides of the brush head 91 will open to both sides under the action of the extrusion force. On the one hand, the degree of fit between the brush head 91 and the tunnel surface is increased, the acting area of the brush head 91 on the tunnel surface is increased, and the cleaning effect is enhanced; on the other hand, the brush head 91 has a certain elastic deformation ability and can always maintain a fitting state even when the tunnel surface is slightly uneven; when the opening structure 93 is a W-shaped structure, it also has a certain elastic deformation ability, making the degree of fit between the brush head 91 and the tunnel surface higher;

[0032] The sensor 94 is provided in the gap of the "human" - shaped or W-shaped brush head 91. One embodiment is a pressure sensor 94. When there is an obstacle ahead or the tunnel surface bulge is too large to cross, the side of the brush head 91 facing away from the support frame 3 will be deformed under pressure, the gap of the brush head 91 will shrink, thus triggering the pressure sensor 94. After receiving the information, the control module of the linear module 8 drives the support frame 3 and the detection device 4 to move left and right in advance, achieving effective pre - obstacle avoidance during the detection process without installing other obstacle - detecting devices. Even if the obstacle - avoidance action is not completed in time, the detection device 4 can also swing along the axis to avoid obstacles, thereby obtaining double protection and further ensuring the safety and detection efficiency of the detection device 4.

[0033] The rigid shovel 95 is disposed on the side of the flexible brush 9 away from the support frame 3. The rigid shovel 95 is an arc-shaped steel sheet, and one end of the arc-shaped steel sheet is fixed to the brush plate 92 by screws or rivets. Specifically, during the detection process, the rigid shovel 95 will first come into contact with the tunnel surface. Once encountering raised particulate matter, the rigid shovel 95 shovels it, and the flexible brush 9 synchronously clears it, maintaining the flatness of the tunnel surface, keeping the detection device 4 in contact with the tunnel surface, and achieving the purpose of making the detection structure of the detection device 4 more accurate.

[0034] The working process is as follows:

[0035] Bearings are first arranged on both sides of the movable groove 31. The two sides of the detection device 4, that is, the ground penetrating radar device, are fixedly installed with rotating shafts, and the two rotating shafts are respectively assembled to the corresponding bearings, and the top of the detection device 4 should exceed the upper surface of the support frame 3. The longitudinal section of the movable groove 31 can be set into a U-shaped structure, so that the detection device 4 is movably installed in the movable groove 31 through the cooperation of the bearing and the shaft.

[0036] The embodiment of the present invention is applicable to tunnel detection. By movably installing the detection device 4 inside the support frame 3, it is not necessary for the operator to always hold the detection device by hand, reducing the problem that the detection device 4 cannot maintain contact with the tunnel arch top surface due to excessive labor. Among them, the support arm 1 can adopt an automatic lifting structure such as hydraulic, electric or pneumatic to achieve the state where the detection device 4 on the support frame 3 is in contact with the tunnel surface; through the above settings, on the one hand, the mechanical support structure can replace manual lifting of the detection device 4, reducing the labor of the operator and also ensuring the stability of the contact state between the detection device 4 and the tunnel surface; on the other hand, through the movable connection method of the bearing and the shaft, when the detection device 4 detects along the depth of the tunnel, if an obstacle is encountered, the part of the detection device 4 exceeding the movable groove 31 will be deflected by the resistance. At this time, the detection device 4 can rotate along the axis and rotate into the movable groove 31, thus playing the role of obstacle avoidance and effectively ensuring the safety of the detection device 4.

[0037] In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An installation structure for a tunnel measurement and detection device, including a support arm (1), characterized in that, The top of the support arm (1) is detachably connected to the support base (2), a support frame (3) is arranged inside the support base (2), a movable groove (31) is opened in the middle of the support frame (3), and a detection device (4) is movably installed in the movable groove (31); A counterweight assembly (5) is provided at the bottom of the detection device (4), and the counterweight assembly (5) includes at least two connecting rods (51), and the connecting rods (51) are spaced apart at the bottom of the detection device (4), one end of the connecting rod (51) is movably connected to the bottom of the detection device (4), and the other end is movably connected to the counterweight member (52); an elastic member (6) is arranged on the side wall of the movable groove (31) corresponding to the swinging direction of the detection device (4), and the elastic member (6) is used for resetting the detection device (4) after the swinging.

2. The installation structure for a tunnel measurement and detection device according to claim 1, characterized in that, The support seat (2) is provided with a displacement groove (7) in a horizontal direction, a linear module (8) is provided in the displacement groove (7), a support frame (3) is provided on the linear module (8), and the support frame (3) moves horizontally along the displacement groove (7) under the drive of the linear module (8).

3. The installation structure for a tunnel measurement and detection device according to claim 1, characterized in that A cleaning member is arranged on the top of the outer peripheral surface of the support frame (3), and the cleaning member comprises a flexible brush (9), and the flexible brush (9) comprises a brush head (91) and a brush plate (92), the brush head (91) is arranged on the brush plate (92), and the brush plate (92) is fixed to the outside of the support frame (3) by screws, and the side of the brush head (91) in contact with the tunnel vault is arranged as an opening structure (93), and a sensor (94) is arranged inside the opening structure (93).

4. The mounting structure for a tunnel measurement and detection device according to claim 3, characterized in that, The opening structure (93) may be a W-shaped or a "human"-shaped structure.

5. The mounting structure for a tunnel measurement and detection device according to claim 4, characterized in that, The cleaning member also includes a rigid shovel (95), which is arranged on the side of the flexible brush (9) away from the support frame (3), and the rigid shovel (95) is an arc-shaped steel sheet, one end of which is fixed to the brush plate (92) by means of screws or rivets.

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