Tunnel lining detection device

Abstract

A tunnel lining detection device relates to the technical field of tunnels and comprises a walking trolley, a vertical lifting mechanism is fixedly connected onto the walking trolley, a detection mechanism is mounted above the vertical lifting mechanism, a traction mechanism is mounted on the walking trolley and the vertical lifting mechanism, and the traction mechanism is connected with the detection mechanism. The height of the detection mechanism can be easily adjusted through the vertical lifting mechanism so as to meet the detection requirements of different tunnel heights, the detection mechanism adopts sliding fit and flexible spring design, each part of a tunnel lining can be flexibly contacted for detection, damage to the tunnel lining can be avoided, and the detection efficiency is improved. The sound in the detection process is clearly recorded through the recording device, and accurate data support is provided for follow-up analysis. And the traction mechanism realizes convenient operation of the detection mechanism through remote control of a pulley and a traction rope, and the safety and efficiency of the detection process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnels, in particular to a tunnel lining detection device. Background Art

[0002] In the field of railway construction and maintenance, the structural integrity of tunnel linings is of vital importance. As a key component to maintain the long-term stability and durability of tunnels, the performance of tunnel linings is directly related to the safe operation of trains. However, with the increase in the service life of tunnels and the influence of various environmental factors, tunnel linings, especially in their arches, are prone to damage such as cracks. The concealment of these cracks and the potential risk of expansion make timely detection particularly important. Traditional detection methods often rely on manual visual inspection, but it is difficult to detect cracks hidden inside the cement.

[0003] The railway tunnel lining detection device disclosed in Chinese patent CN116818896A attempts to solve this problem through a lifting mechanism, but they still have many shortcomings in practical applications. Specifically, when the detection mechanism of the device rises vertically, the operating components such as the lever and the turntable are too high from the ground, which not only brings inconvenience to the operator, but also poses obvious safety hazards. Operators often need to stand on the bottom plate, and even require additional climbing equipment to operate, which undoubtedly increases the complexity and risk of the operation. In addition, when the detection device performs tapping detection on the tunnel lining at a higher position, the attenuation of sound during propagation makes it difficult for the operator to accurately judge the internal condition of the lining. The clarity and recognition of the sound are key factors in judging whether the lining has cracks or other damage, and the sound distortion caused by the height will seriously affect the accuracy of the detection results. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then proposes a tunnel lining detection device.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A tunnel lining detection device comprises a traveling trolley, a vertical lifting mechanism is fixedly connected to the traveling trolley, a detection mechanism is installed above the vertical lifting mechanism, a traction mechanism is installed on the traveling trolley and the vertical lifting mechanism, and the traction mechanism is connected to the detection mechanism.

[0007] Furthermore, the walking trolley includes a bottom plate, the bottom plate is connected to a top plate via a plurality of support rods, a handrail is provided on one side of the top plate, a universal wheel is provided at the bottom of the bottom plate, and a counterweight is provided on the bottom plate.

[0008] Furthermore, the vertical lifting mechanism includes a lower sleeve, which is threadedly connected to the walking trolley, a middle connecting tube is slidably fitted in the lower sleeve, a lower tightening knob is provided on the lower sleeve, and the lower tightening knob can make the middle connecting tube move along the lower sleeve and position it at a point on the lower sleeve, an upper lifting rod is slidably fitted in the middle connecting tube, an upper tightening knob is provided on the middle connecting tube, and the upper tightening knob can make the upper lifting rod move along the middle connecting tube and position it at a point on the middle connecting tube, and a mounting plate is provided on the top of the upper lifting rod.

[0009] Furthermore, a rubber fixing block is provided on the top of the mounting plate.

[0010] Furthermore, the detection mechanism includes an outer tube, the outer tube is fixedly connected to the right side of the mounting plate, a guide rod is slidably fitted inside the outer tube, a detection ball is provided on the top of the guide rod, a traction plate is provided on the bottom of the guide rod, a flexible spring is provided between the traction plate and the outer tube, and a recording device is installed on the outer tube.

[0011] Furthermore, a sound collecting bucket is provided on the top of the outer tube, and the audio collecting head of the recording device is located in the sound collecting bucket.

[0012] Furthermore, the flexible spring drives the traction plate away from the outer tube.

[0013] Furthermore, the traction mechanism includes a first mounting seat, a first pulley, a second mounting seat, a second sliding block, a traction rope, a threaded rod, a guide tube, a third mounting seat, a third pulley, a fixed block and a pull ring, the first mounting seat and the second mounting seat are provided at the bottom of the mounting plate, the first mounting seat and the second mounting seat are respectively located on both sides of the upper lifting rod, the first mounting seat is rotatably connected to the first pulley, the second mounting seat is rotatably connected to the second pulley, the third mounting seat and the fixed block are fixedly connected to the top plate, the third mounting seat is rotatably connected to the third pulley, the fixed block is provided with a through hole, the lower casing is provided with a threaded rod, the guide tube is installed on the threaded rod, the traction plate is connected to the traction rope, the traction rope passes around the second pulley and the first pulley in turn, passes through the guide tube, passes around the third pulley again, passes through the through hole, and is connected to the pull ring.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can flexibly move in the tunnel through the design of the walking trolley, so as to quickly reach the detection point. Its vertical lifting mechanism can easily adjust the height of the detection mechanism to meet the detection requirements of different tunnel heights, ensuring the comprehensiveness and accuracy of the detection. The detection mechanism adopts a sliding fit and flexible spring design, which can not only flexibly contact various parts of the tunnel lining for detection, but also avoid damage to the tunnel lining. At the same time, the sound during the detection process is clearly recorded through the recording device, providing accurate data support for subsequent analysis. The traction mechanism realizes the convenient operation of the detection mechanism through remote control of the pulley and the traction rope, and improves the safety and efficiency of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0017] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0018] Figure 4 for Figure 1 A partial enlarged view of point C in the middle;

[0019] Figure 5 for Figure 1 A partial enlarged view of point D in the middle;

[0020] Among them: 1 walking trolley, 11 bottom plate, 12 support rod, 13 top plate, 14 handrail, 15 universal wheel, 16 counterweight block,

[0021] 2 vertical lifting mechanism, 21 lower casing, 22 lower tightening knob, 23 middle connecting pipe, 24 upper tightening knob, 25 upper lifting rod, 26 mounting plate, 27 rubber fixing block,

[0022] 3 traction mechanism, 31 first mounting seat, 32 first pulley, 33 second mounting seat, 34 second slider, 35 traction rope, 36 threaded rod, 37 guide tube, 38 third mounting seat, 39 third pulley, 410 fixed block, 411 pull ring,

[0023] 4 detection mechanism, 41 outer tube, 42 guide rod, 43 traction plate, 44 flexible spring, 45 detection ball, 46 sound collecting bucket, 47 recording device. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0025] like Figure 1-Figure 5 As shown, a tunnel lining detection device includes a traveling trolley 1, to which a vertical lifting mechanism 2 is fixedly connected, a detection mechanism 4 is installed above the vertical lifting mechanism, a traction mechanism 3 is installed on the traveling trolley and the vertical lifting mechanism, and the traction mechanism is connected to the detection mechanism.

[0026] In at least one embodiment, the walking trolley includes a bottom plate 11, the bottom plate is connected to a top plate 13 through a plurality of support rods 12, a handrail 14 is provided on one side of the top plate, a universal wheel 15 is provided at the bottom of the bottom plate, and a counterweight 16 is provided on the bottom plate. The design of the walking trolley enables the entire detection device to be easily moved in the tunnel, thereby improving the detection efficiency. Through the universal wheel 15, the trolley can flexibly change the direction of movement to adapt to the complex environment in the tunnel. The addition of the counterweight 16 enhances the stability of the walking trolley, prevents tilting or tipping during the detection process, and thus ensures the safety and accuracy of the detection process.

[0027] In at least one embodiment, the vertical lifting mechanism includes a lower casing 21, the lower casing is threadedly connected to the walking trolley, a middle connecting tube 23 is slidably matched in the lower casing, a lower tightening knob 22 is provided on the lower casing, the lower tightening knob can make the middle connecting tube move along the lower casing and be positioned at a point on the lower casing, an upper lifting rod 25 is slidably matched in the middle connecting tube, an upper tightening knob 24 is provided on the middle connecting tube, the upper tightening knob can make the upper lifting rod move along the middle connecting tube and be positioned at a point on the middle connecting tube, and a mounting plate 26 is provided on the top of the upper lifting rod. The vertical lifting mechanism realizes flexible adjustment of the height of the detection mechanism through the sliding cooperation of the lower casing 21, the middle connecting tube 23 and the upper lifting rod 25. This design enables the device to adapt to the requirements of tunnel lining detection at different heights. The rubber fixing block 27 on the top of the mounting plate 26 further enhances the stability of the detection mechanism to prevent shaking during the detection process.

[0028] Furthermore, a rubber fixing block 27 is provided on the top of the mounting plate.

[0029] In at least one embodiment, the detection mechanism includes an outer tube 41, the outer tube is fixedly connected to the right side of the mounting plate, a guide rod 42 is slidably fitted inside the outer tube, a detection ball 45 is provided on the top of the guide rod, a traction plate 43 is provided on the bottom of the guide rod, a flexible spring 44 is provided between the traction plate and the outer tube, and a recording device 47 is installed on the outer tube. The detection mechanism can flexibly contact and detect various parts of the tunnel lining through the sliding fit of the guide rod 42 and the detection ball 45. The provision of the flexible spring 44 maintains a certain buffer distance between the traction plate 43 and the outer tube 41, avoiding possible damage to the tunnel lining caused by rigid contact. At the same time, the cooperation of the recording device 47 and the sound collecting bucket 46 enables the sound generated during the detection process to be clearly recorded, providing an accurate data basis for subsequent sound analysis.

[0030] Furthermore, a sound collecting bucket 46 is provided at the top of the outer tube, and the audio collecting head of the recording device is located in the sound collecting bucket.

[0031] Furthermore, the flexible spring drives the traction plate away from the outer tube.

[0032] In at least one embodiment, the traction mechanism includes a first mounting seat 31, a first pulley 32, a second mounting seat 33, a second slider 34, a traction rope 35, a threaded rod 36, a guide tube 37, a third mounting seat 38, a third pulley 39, a fixed block 410 and a pull ring 411. The bottom of the mounting plate is provided with a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are respectively located on both sides of the upper lifting rod, the first mounting seat is rotatably connected to the first pulley, the second mounting seat is rotatably connected to the second pulley, the top plate is fixedly connected with a third mounting seat and a fixed block, the third mounting seat is rotatably connected to the third pulley, the fixed block is provided with a through hole, the lower casing is provided with a threaded rod, the threaded rod is installed with a guide tube, the traction plate is connected with a traction rope, the traction rope passes through the second pulley and the first pulley in turn, passes through the guide tube, passes through the third pulley again, passes through the through hole and is connected to the pull ring. The traction mechanism realizes remote control of the detection mechanism through the cooperation of the pulley and the traction rope. This design not only makes the testing process more convenient, but also avoids direct contact between personnel and the testing organization, thus improving the safety of the testing.

[0033] Working mode: Place the trolley in the tunnel to be inspected, and ensure that the universal wheels under the bottom plate are in good contact with the ground for easy movement. As needed, you can add or remove counterweights on the bottom plate to maintain the stability of the trolley.

[0034] According to the detection needs, adjust the lower casing, middle connecting pipe and upper lifting rod to achieve the appropriate detection height. Use the lower tightening knob and the upper tightening knob to fix the position of the middle connecting pipe and the upper lifting rod respectively. Set the rubber fixing block on the top of the mounting plate (the rubber fixing block can be against the top of the tunnel to prevent the device from moving) to ensure the stability of the detection mechanism.

[0035] Fix the outer tube of the detection mechanism to the mounting plate. Make sure that the guide rods, detection balls, traction plates and flexible springs are installed correctly and function properly. Install the recording device on the outer tube and make sure the sound collecting bucket is in the proper position to collect the sound.

[0036] Ensure that the first mounting base, first pulley, second mounting base, second pulley, third mounting base, third pulley and other components are firmly installed and function properly. Pass the traction rope around the pulley according to the specified path, through the guide tube and the through hole, and finally connect it to the pull ring.

[0037] Adjust the traction rope through the pull ring to make the detection mechanism (detection ball) hit the tunnel lining intermittently. Slowly move the walking car and use the recording device to record the sound. Observe the knocking of the detection ball against the tunnel lining, and judge the condition of the tunnel lining through the sound collected by the recording device and the direct observation of the detection personnel.

[0038] After the test is completed, the data from the recording device is exported and sound analysis is performed to evaluate the integrity of the tunnel lining and possible problems. Combined with the results of direct observation, the overall condition of the tunnel lining is evaluated. Based on the test results, the parts of the tunnel lining with problems are marked. A maintenance and repair plan is formulated to deal with the marked parts in a timely manner.

[0039] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A tunnel lining detection device, characterized in that: It comprises a walking trolley, a vertical lifting mechanism is fixedly connected to the walking trolley, a detection mechanism is installed above the vertical lifting mechanism, a traction mechanism is installed on the walking trolley and the vertical lifting mechanism, and the traction mechanism is connected to the detection mechanism.

2. The tunnel lining detection device according to claim 1, characterized in that: The walking trolley comprises a bottom plate, the bottom plate is connected to a top plate via a plurality of support rods, a handrail is arranged on one side of the top plate, a universal wheel is arranged at the bottom of the bottom plate, and a counterweight block is arranged on the bottom plate.

3. The tunnel lining detection device according to claim 2, characterized in that: The vertical lifting mechanism includes a lower casing, which is threadedly connected to the walking trolley, a middle connecting tube slidingly fitted in the lower casing, a lower tightening knob provided on the lower casing, the lower tightening knob can make the middle connecting tube move along the lower casing and be positioned at a point on the lower casing, an upper lifting rod slidingly fitted in the middle connecting tube, an upper tightening knob provided on the middle connecting tube, the upper tightening knob can make the upper lifting rod move along the middle connecting tube and be positioned at a point on the middle connecting tube, and a mounting plate is provided on the top of the upper lifting rod.

4. The tunnel lining detection device according to claim 3, characterized in that: A rubber fixing block is arranged on the top of the mounting plate.

5. The tunnel lining detection device according to claim 3, characterized in that: The detection mechanism includes an outer tube, the outer tube is fixedly connected to the right side of the mounting plate, a guide rod is slidably fitted inside the outer tube, a detection ball is provided on the top of the guide rod, a traction plate is provided on the bottom of the guide rod, a flexible spring is provided between the traction plate and the outer tube, and a recording device is installed on the outer tube.

6. The tunnel lining detection device according to claim 5, characterized in that: A sound collecting bucket is arranged on the top of the outer tube, and the audio collecting head of the recording device is located in the sound collecting bucket.

7. The tunnel lining detection device according to claim 5, characterized in that: The flexible spring urges the puller plate away from the outer tube.

8. The tunnel lining detection device according to claim 5, characterized in that: The traction mechanism includes a first mounting seat, a first pulley, a second mounting seat, a second sliding block, a traction rope, a threaded rod, a guide tube, a third mounting seat, a third pulley, a fixed block and a pull ring, a first mounting seat and a second mounting seat are provided at the bottom of the mounting plate, the first mounting seat and the second mounting seat are respectively located on both sides of the upper lifting rod, the first mounting seat is rotatably connected to the first pulley, the second mounting seat is rotatably connected to the second pulley, the third mounting seat and the fixed block are fixedly connected to the top plate, the third mounting seat is rotatably connected to the third pulley, the fixed block is provided with a through hole, the lower casing is provided with a threaded rod, the guide tube is installed on the threaded rod, the traction plate is connected to the traction rope, the traction rope passes around the second pulley and the first pulley in turn, passes through the guide tube, passes around the third pulley again, passes through the through hole, and is connected to the pull ring.

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