A crack detection device for tunnel construction

Abstract

The application is suitable for the technical field of tunnel detection equipment, and provides a crack detection equipment for tunnel construction, which comprises a base, the base is connected with a mounting plate through a hydraulic lifting rod, further comprises: a driving mechanism, the driving mechanism comprises a driving motor, the driving motor is connected with a first threaded rod, one end of the first threaded rod is rotatably installed with a swing arm, the swing arm is installed with a telescopic assembly, the first threaded rod is installed with a first sliding block, the first sliding block is connected with the telescopic assembly through a first connecting rod; a limiting assembly, the limiting assembly comprises a mounting block and a limiting block, the mounting block is slidably installed with a limiting plug rod, the limiting plug rod is connected with the side wall of the mounting block through a return spring, the first sliding block is further installed with a limiting push rod; and a detection part for detecting cracks in the tunnel. The device can detect the entire crown of the tunnel, has a large detection area, does not need manual operation, and has high detection efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tunnel detection equipment, and particularly relates to a crack detection equipment for tunnel construction. BACKGROUND

[0002] Tunnel engineering refers to a series of construction works built underground, underwater and in mountainous areas. According to different locations, tunnels can be divided into three types: mountain tunnel, underwater tunnel and urban tunnel. Tunnel engineering greatly facilitates the construction of traffic lines and promotes the development of the transportation industry. In the long-term operation of tunnels, the secondary lining of the tunnel may have cracks due to the influence of vehicle vibration, temperature stress and temperature deformation caused by cement hydration, geological changes and the like, thereby bringing certain safety hazards to the operation of the tunnel. Therefore, the tunnel needs to be detected regularly, cracks are found in time and repaired, and safety hazards are reduced.

[0003] In the related art, when a construction supervisor detects cracks in a tunnel, a handheld probe or camera is generally used for detection. For cracks in a lower position in the tunnel, the worker can detect the cracks by standing at the bottom of the tunnel. However, for cracks in the top of the tunnel, a scaffold or a lifting vehicle needs to be built in the tunnel to lift the construction supervisor to the air, and the construction supervisor can detect the crown crack of the tunnel by holding a detector. This operation method is inconvenient and has safety hazards. SUMMARY

[0004] The purpose of the embodiment of the application is to provide a crack detection equipment for tunnel construction, which aims to solve the problems raised in the background art.

[0005] The embodiment of the application is implemented as follows: a crack detection equipment for tunnel construction, comprising a base, a moving mechanism is arranged at the bottom of the base, a hydraulic lifting rod is installed on the base, and a mounting plate is connected to the top of the hydraulic lifting rod, further comprising:

[0006] A driving mechanism, the driving mechanism comprises a driving box installed on the mounting plate, a driving motor is installed in the driving box, a first threaded rod is connected to the output end of the driving motor, a swing arm is rotatably installed at the end of the first threaded rod away from the driving motor, a telescopic assembly is installed in the swing arm, a first sliding block is installed on the first threaded rod, a first connecting rod is rotatably connected to the side wall of the first sliding block, and one end of the first connecting rod away from the first sliding block is connected to the telescopic assembly, and the first connecting rod is used to convert the horizontal movement of the first sliding block into the linear telescopic movement of the telescopic assembly along the length direction of the swing arm.

[0007] The limiting assembly comprises a mounting block mounted on the mounting plate, a limiting block slidingly mounted in the swing arm, a limiting plug rod slidingly mounted in the mounting block, one end of the limiting plug rod inserted into the swing arm and fixedly connected with the limiting block, and the other end of the limiting plug rod away from the limiting block connected with the side wall of the mounting block through the return spring, a limiting slot matched with the limiting block is formed in the mounting block, and a limiting push rod for pushing the limiting block to move is further mounted on the first sliding block.

[0008] The detection part is mounted on the telescopic assembly and used for detecting the cracks in the tunnel.

[0009] Further, the telescopic assembly comprises a fixed sleeve mounted in the swing arm, a first telescopic sleeve slidingly mounted in the fixed sleeve, and a first connecting rod rotatably mounted on the first telescopic sleeve away from the first sliding block, a second telescopic sleeve slidingly mounted in the first telescopic sleeve, and the detection part mounted on the second telescopic sleeve away from the swing arm, two transmission gears symmetrically mounted on the first telescopic sleeve, a second rack provided on the side wall of the second telescopic sleeve away from the detection part and engaged with the transmission gears, and a first rack provided in the inside of the side wall of the fixed sleeve and engaged with the transmission gears.

[0010] Further, the detection part comprises a detector and a detection plate, the detection plate is mounted on the second telescopic sleeve, three detectors are mounted side by side on the detection plate, and two detectors on both sides are slidingly mounted on the detection plate, and an adjusting assembly is mounted on the first telescopic sleeve for driving the two detectors on both sides to move towards or away from each other.

[0011] Further, the adjusting assembly comprises two second threaded rods connected with a transmission assembly for driving the rotation of the second threaded rods, a second sliding block mounted on each of the second threaded rods, a second connecting rod rotatably connected with the second sliding block, a telescopic connecting rod connected with the second connecting rod away from the second sliding block, the telescopic connecting rod slidingly mounted in the detection plate, the two telescopic connecting rods symmetrically arranged on both sides of the detection plate, and each of the two telescopic connecting rods connected with the detection plate.

[0012] Further, the transmission assembly comprises a worm and a worm gear engaged with each other, the worm coaxially mounted with the transmission gear for synchronous rotation with the transmission gear, and the worm gear mounted on each of the second threaded rods.

[0013] Further, the moving mechanism adopts a tracked moving mechanism.

[0014] Further, the end of the limiting push rod close to the limiting block is provided with a ball, and the limiting push rod is in abutment with the limiting block through the ball.

[0015] The tunnel construction crack detection equipment provided by the embodiment of the present application is used, the mounting plate is lifted by the hydraulic lifting rod, so that the height of the mounting plate is adjusted, when the mounting plate is lifted to a specified height (generally, the specified height is the same as the lowest end of the tunnel arc top), the driving mechanism starts to work, and at this time, the position of the swing arm is fixed under the cooperation of the limiting plug rod and the limiting block. The first threaded rod is rotated by the driving motor, the first threaded rod drives the first sliding block to slide along the axial direction of the first threaded rod, the first sliding block drives the telescopic assembly to be elongated through the first connecting rod, the telescopic assembly drives the detection part to contact the arc top of the tunnel, and the first sliding block drives the limiting push rod to move synchronously in the sliding process, the limiting push rod is inserted into the swing arm, so that the limiting block is pushed into the limiting groove, at this time, the swing arm can rotate synchronously with the first threaded rod after losing the limiting of the limiting block, and at this time, the first connecting rod also rotates at the fixed position after losing the limiting of the swing arm, and the swing arm drives the detection part to reciprocate along the arc top of the tunnel through the telescopic assembly. The device can detect the whole arc top of the tunnel, the detection area is large, manual operation is not needed, and the detection efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure diagram of the tunnel construction crack detection equipment provided by the embodiment of the present application is shown in the figure;

[0017] Figure 2 A local structure diagram of the tunnel construction crack detection equipment provided by the embodiment of the present application is shown in the figure;

[0018] Figure 3 A structure diagram of the telescopic assembly in the tunnel construction crack detection equipment provided by the embodiment of the present application is shown in the figure; Figure 2 An enlarged view of A in the figure;

[0019] Figure 4 A structure diagram of the telescopic assembly in the tunnel construction crack detection equipment provided by the embodiment of the present application is shown in the figure;

[0020] Figure 5 An enlarged view of B in the figure; Figure 4 An enlarged view of B in the figure;

[0021] Figure 6 An enlarged view of C in the figure. Figure 2 An enlarged view of C in the figure.

[0022] In the attached diagram: Base 1; Moving mechanism 11; Hydraulic lifting rod 12; Mounting plate 13; Drive mechanism 2; Drive box 21; Drive motor 22; First threaded rod 23; First slider 24; First connecting rod 25; Swing arm 26; Limiting assembly 3; Mounting block 31; Limiting insert rod 32; Limiting block 33; Return spring 34; Limiting groove 35; Limiting push rod 36; Telescopic assembly 4; Fixed sleeve 41; First telescopic sleeve 42; Second telescopic sleeve 43; Transmission gear 44; First rack 45; Second rack 46; Detection unit 5; Detector 51; Detection plate 52; Adjusting assembly 6; Second threaded rod 61; Second slider 62; Second connecting rod 63; Telescopic connecting rod 64; Worm gear 65; Worm wheel 66. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0025] like Figures 1-3 As shown, a crack detection device for tunnel construction provided in one embodiment of the present invention includes a base 1, a moving mechanism 11 disposed at the bottom of the base 1, a hydraulic lifting rod 12 mounted on the base 1, and a mounting plate 13 connected to the top of the hydraulic lifting rod 12. The device also includes:

[0026] The drive mechanism 2 includes a drive box 21 mounted on a mounting plate 13. A drive motor 22 is installed in the drive box 21. The output end of the drive motor 22 is connected to a first threaded rod 23. A swing arm 26 is rotatably mounted on the end of the first threaded rod 23 away from the drive motor 22. A telescopic component 4 is installed in the swing arm 26. A first slider 24 is mounted on the first threaded rod 23. A first connecting rod 25 is rotatably connected to the side wall of the first slider 24. The end of the first connecting rod 25 away from the first slider 24 is connected to the telescopic component 4. The first connecting rod 25 is used to convert the horizontal movement of the first slider 24 into the linear telescopic movement of the telescopic component 4 along the length direction of the swing arm 26.

[0027] A limiting assembly 3, which comprises a mounting block 31 mounted on the mounting plate 13, a limiting block 33 slidingly mounted in the swing arm 26, a limiting plug 32 slidingly mounted in the mounting block 31, one end of the limiting plug 32 inserted into the swing arm 26 and fixedly connected with the limiting block 33, and the other end of the limiting plug 32 away from the limiting block 33 connected with the side wall of the mounting block 31 through a return spring 34, a limiting slot 35 matched with the limiting block 33 is formed in the mounting block 31, and a limiting push rod 36 for pushing the limiting block 33 is mounted on the first sliding block 24; and

[0028] A detection part 5 mounted on the telescopic assembly 4 for detecting the cracks in the tunnel.

[0029] In the embodiment of the present application, when in use, the hydraulic lifting rod 12 drives the mounting plate 13 to lift, so as to adjust the height of the mounting plate 13, when the mounting plate 13 is lifted to a specified height (generally, the lowest end of the tunnel arc top is flush), the driving mechanism 2 starts to work, and at this time, the position of the swing arm 26 is fixed under the cooperation of the limiting plug 32 and the limiting block 33. The driving motor 22 drives the first threaded rod 23 to rotate, the first threaded rod 23 drives the first sliding block 24 to slide along the axial direction, the first sliding block 24 drives the telescopic assembly 4 to elongate through the first connecting rod 25, the telescopic assembly 4 drives the detection part 5 to contact with the arc top of the tunnel, and the first sliding block 24 also drives the limiting push rod 36 to move synchronously in the process of sliding, the limiting push rod 36 is inserted into the swing arm 26, so as to push the limiting block 33 into the limiting slot 35, at this time, the swing arm 26 can rotate synchronously with the first threaded rod 23 after losing the limiting of the limiting block 33, and at this time, the first connecting rod 25 also rotates at a fixed position after losing the limiting of the swing arm 26, the swing arm 26 drives the detection part 5 to reciprocate along the arc top of the tunnel through the telescopic assembly 4, so as to detect the whole arc top of the tunnel.

[0030] As shown in FIGS. Figure 2 , 4 and 5, as a preferred embodiment of the present application, the telescopic assembly 4 comprises a fixed sleeve 41 mounted in the swing arm 26, a first telescopic sleeve 42 slidingly mounted in the fixed sleeve 41, and one end of the first connecting rod 25 away from the first sliding block 24 rotatably mounted on the first telescopic sleeve 42, a second telescopic sleeve 43 slidingly mounted in the first telescopic sleeve 42, and the detection part 5 mounted on one end of the second telescopic sleeve 43 away from the swing arm 26, two transmission gears 44 symmetrically mounted on the first telescopic sleeve 42, a second rack 46 provided on the side wall of the second telescopic sleeve 43 away from the detection part 5 and engaged with the transmission gears 44, and a first rack 45 provided in the side wall of the fixed sleeve 41 and engaged with the transmission gears 44.

[0031] In the embodiment of the present application, when in use, the first connecting rod 25 pushes the first telescopic sleeve 42 to slide in the fixed sleeve 41, during the sliding of the first telescopic sleeve 42, the transmission gear 44 will engage with the first rack 45, so that the transmission gear 44 rotates, at the same time, the transmission gear 44 will engage with the second rack 46, so as to drive the second telescopic sleeve 43 to slide, so that the telescopic assembly 4 is elongated as a whole, and the telescopic assembly 4 drives the detection part 5 to contact with the arch top of the tunnel.

[0032] As shown in Figure 1 and 2 , as a preferred embodiment of the present application, the detection part 5 comprises a detector 51 and a detection plate 52, the detection plate 52 is installed on the second telescopic sleeve 43, three detectors 51 are installed side by side on the detection plate 52, and two detectors 51 on both sides are slidingly installed on the detection plate 52, and the first telescopic sleeve 42 is installed with an adjusting assembly 6 for driving two detectors 51 on both sides to move towards or reverse at the same time.

[0033] In the embodiment of the present application, the adjusting assembly 6 comprises two second threaded rods 61, the second threaded rods 61 are connected with a transmission assembly for driving the rotation thereof, a second sliding block 62 is installed on each of the second threaded rods 61, a second connecting rod 63 is rotatably connected with the second sliding block 62, a telescopic connecting rod 64 is connected to the end of the second connecting rod 63 away from the second sliding block 62, the telescopic connecting rod 64 is slidingly installed in the detection plate 52, two telescopic connecting rods 64 are symmetrically arranged on both sides of the detection plate 52, and each of the two telescopic connecting rods 64 is connected with a detection plate 52.

[0034] In use, under the action of the transmission assembly, the second threaded rod 61 rotates, the second threaded rod 61 drives the second sliding block 62 to slide along the axial direction thereof, the second sliding block 62 drives the telescopic connecting rod 64 to slide along the detection plate 52 through the second connecting rod 63, and the detection plate 52 drives the corresponding detector 51 to move synchronously, so as to adjust the distance between the two adjacent detectors 51, expand the detection area of the device, and improve the detection efficiency of the device.

[0035] As shown in Figure 6 , as a preferred embodiment of the present application, the transmission assembly comprises a worm 65 and a worm wheel 66 which are engaged with each other, the worm 65 is coaxially installed with the transmission gear 44 for synchronous rotation with the transmission gear 44, and the worm wheel 66 is installed on each of the two second threaded rods 61.

[0036] In the embodiment of the present application, when in use, the transmission gear 44 drives the worm 65 to rotate, and the worm 65 drives the second threaded rod 61 to rotate under the cooperation of the worm 65 and the worm wheel 66, so that the distance between the adjacent detectors 51 can be adjusted without setting an additional transmission.

[0037] As shown in Figure 1 As a preferred embodiment of the present application, the moving mechanism 11 is a caterpillar moving mechanism. The caterpillar moving mechanism has strong adaptability and high passing capacity, and can adapt to various ground environments in the tunnel, so that the device can move normally and realize comprehensive detection of the tunnel arch.

[0038] As a preferred embodiment of the present application (not shown in the drawings), the limiting push rod 36 is provided with a ball near the end of the limiting block 33, and the limiting push rod 36 abuts against the limiting block 33 through the ball. By setting the ball, the friction between the limiting block 33 and the limiting push rod 36 can be effectively reduced, so that the rotation is smooth, and the service life of the device is prolonged.

[0039] Working principle: in use, the hydraulic lifting rod 12 drives the mounting plate 13 to lift, so as to adjust the height of the mounting plate 13, when the mounting plate 13 rises to the specified height (generally, it is flush with the lowest end of the tunnel arc top), the driving mechanism 2 starts to work, and at this time, under the cooperation of the limiting plug rod 32 and the limiting block 33, the position of the swing arm 26 is fixed. The driving motor 22 drives the first threaded rod 23 to rotate, the first threaded rod 23 drives the first sliding block 24 to slide along the axial direction, the first sliding block 24 pushes the first telescopic sleeve 42 to slide in the fixed sleeve 41, in the process of sliding of the first telescopic sleeve 42, the transmission gear 44 will be engaged with the first rack 45, so that the transmission gear 44 rotates, at the same time, the transmission gear 44 will be engaged with the second rack 46, so as to drive the second telescopic sleeve 43 to slide, so that the telescopic assembly 4 is elongated as a whole, the second telescopic sleeve 43 drives the detection part 5 to contact with the arc top of the tunnel, the transmission gear 44 drives the worm 65 to rotate, under the cooperation of the worm 65 and the worm wheel 66, the worm 65 can drive the second threaded rod 61 to rotate, the second threaded rod 61 drives the second sliding block 62 to slide along the axial direction, the second sliding block 62 drives the telescopic connecting rod 64 to slide along the detection plate 52 through the second connecting rod 63, the detection plate 52 drives the corresponding detector 51 to move synchronously, so as to adjust the distance between the two adjacent detectors 51, and the detection area of the device can be expanded. The first sliding block 24 also drives the limiting push rod 36 to move synchronously in the process of sliding, the limiting push rod 36 is inserted into the swing arm 26, so as to push the limiting block 33 into the limiting groove 35, at this time, after losing the limiting of the limiting block 33, the swing arm 26 can rotate synchronously with the first threaded rod 23, and at this time, the first connecting rod 25 also rotates at the fixed position due to losing the limiting of the swing arm 26, the swing arm 26 drives the detection part 5 to reciprocate along the arc top of the tunnel through the telescopic assembly 4, so as to detect the whole arc top of the tunnel.

[0040] The above merely describes the preferred embodiment of the present application and should not be used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A crack detection device for tunnel construction, comprising a base, the bottom of the base is provided with a moving mechanism, the base is installed with a hydraulic lifting rod, and the top of the hydraulic lifting rod is connected with a mounting plate, characterized in that, Also include: The driving mechanism includes a driving box mounted on the mounting plate, a driving motor is installed in the driving box, the output end of the driving motor is connected with a first threaded rod, the end of the first threaded rod away from the driving motor is rotatably installed with a swing arm, the swing arm is installed with a telescopic assembly, a first sliding block is installed on the first threaded rod, a first connecting rod is rotatably connected on the side wall of the first sliding block, and one end of the first connecting rod away from the first sliding block is connected with the telescopic assembly, the first connecting rod is used for converting the horizontal movement of the first sliding block into the linear telescopic movement of the telescopic assembly along the length direction of the swing arm; The limiting assembly includes a mounting block mounted on the mounting plate and a limiting block slidingly mounted in the swing arm, a limiting plug rod is slidingly installed in the mounting block, one end of the limiting plug rod is inserted into the swing arm and is fixedly connected with the limiting block, and the other end of the limiting plug rod away from the limiting block is connected with the side wall of the mounting block through the return spring, a limiting slot matched with the limiting block is formed in the mounting block, and a limiting push rod for pushing the limiting block to move is also installed on the first sliding block; and The detection part is installed on the telescopic assembly and is used for detecting the cracks in the tunnel; The telescopic assembly includes a fixed sleeve installed in the swing arm, a first telescopic sleeve is slidingly installed in the fixed sleeve, and one end of the first connecting rod away from the first sliding block is rotatably installed on the first telescopic sleeve, a second telescopic sleeve is slidingly installed in the first telescopic sleeve, and the detection part is installed on one end of the second telescopic sleeve away from the swing arm, two transmission gears are symmetrically installed on the first telescopic sleeve, a second rack meshing with the transmission gears is arranged on the side wall of the second telescopic sleeve away from the detection part, and a first rack meshing with the transmission gears is arranged in the side wall of the fixed sleeve; The detection part includes a detector and a detection plate, the detection plate is installed on the second telescopic sleeve, three detectors are installed side by side on the detection plate, and two detectors on both sides are slidingly installed on the detection plate, and an adjusting assembly for driving two detectors on both sides to move towards or away from each other is installed on the first telescopic sleeve; The adjusting assembly includes two second threaded rods, the second threaded rods are connected with a transmission assembly for driving the rotation thereof, second sliding blocks are installed on the second threaded rods, second connecting rods are rotatably connected with the second sliding blocks, telescopic connecting rods are connected with one end of the second connecting rods away from the second sliding blocks, and the telescopic connecting rods are slidingly installed in the detection plate, two telescopic connecting rods are symmetrically arranged on both sides of the detection plate, and the two telescopic connecting rods are respectively connected with one detection plate.

2. The crack detection apparatus for tunnel construction according to claim 1, characterized by, The transmission assembly includes a worm and a worm gear meshing with each other, the worm is coaxially installed with the transmission gear and is used for rotating synchronously with the transmission gear, and worm gears are installed on the two second threaded rods.

3. The crack detection apparatus for tunnel construction according to claim 1, characterized by, The moving mechanism adopts a tracked moving mechanism.

4. The crack detection apparatus for tunnel construction according to claim 1, characterized by The end of the limiting push rod close to the limiting block is installed with a ball, and the limiting push rod abuts against the limiting block through the ball.

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