Shield tunnel segment elastic sealing gasket section monitoring equipment

Abstract

The invention relates to the technical field of optical metering detection, in particular to shield tunnel segment elastic sealing gasket section monitoring equipment which comprises a detection vehicle, a cavity is formed in the detection vehicle, an air pump is fixedly connected to the bottom of the cavity, two air outlets are formed in each of the two sides of the air pump, and air conveying pipes are fixedly connected into the air outlets. The end, away from the air outlet, of the air conveying pipe is fixedly connected with an air cylinder, and an adjusting piston is slidably connected into the air cylinder. According to the invention, when the detection rod moves upwards, the detection rod is completely attached to the duct piece, and the measurement unit is fixed on the detection rod, so that the measurement unit is closer to the duct piece and the sealing gasket, errors caused by too long distance during detection can be avoided, the gap size of the sealing gasket can be more accurately detected, and whether processing is carried out or not is considered by comparing normal errors; because the detection rods and the measuring units are arranged in an array, the number of the measuring units is reduced, the production cost is reduced, and the maintenance is simpler.

Description

Technical Field

[0001] The present invention relates to the technical field of optical metrology and detection, and particularly to a cross-section monitoring device for an elastic gasket of a shield tunnel segment. Background Technique

[0002] The shield tunnel segment is the main assembled component in shield construction and is the innermost barrier of the tunnel, bearing the functions of resisting soil pressure, groundwater pressure, and some special loads. The shield segment is the permanent lining structure of the shield tunnel. The quality of the shield segment is directly related to the overall quality and safety of the tunnel, affecting the waterproof performance and durability of the tunnel; the segment is usually arc-shaped, and the gasket is also arc-shaped. When detecting, it is necessary to compare and measure the curvature of the gasket, and at the same time, it can be detected whether there is a gap between the gaskets. If the gap between the gaskets is too large, it may cause the inability to bear the pressure or lead to water leakage. Considering that in the prior art, when detecting the top segment and gasket, the measuring units are usually arranged in the same plane and directly detect the segment and gasket. At this time, due to the relatively long distance between the detection unit and the segment and gasket, and when the detection vehicle reaches the position of the gasket, it will stop. At this time, the detection unit will shake, which may cause some errors in the measurement results due to the shake, and thus may lead to frequent adjustment of the position of the measurement unit or the detection vehicle during detection; when using more measurement units for synchronous detection to reduce measurement errors, it will lead to an increase in production costs. Since the increase in the number of measurement units will make the maintenance more cumbersome, and at the same time, it will consume more energy during detection. Summary of the Invention

[0003] The purpose of the present invention is to provide a cross-section monitoring device for an elastic gasket of a shield tunnel segment to solve the problems raised in the above background technique.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention is a cross-section monitoring device for an elastic gasket of a shield tunnel segment, including a detection vehicle. A cavity is opened inside the detection vehicle. An air pump is fixedly connected to the bottom of the cavity. Two air outlets are provided on both sides of the air pump. An air delivery pipe is fixedly connected inside the air outlet. The end of the air delivery pipe far from the air outlet is fixedly connected to a cylinder. An adjusting piston is slidably connected inside the cylinder. An adjusting unit is fixedly connected to the top of the adjusting piston. A detection unit is fixedly connected to the top of the adjusting unit. The detection unit includes a detection base. A detection groove is formed in the middle of the interior of the detection base. A plurality of first springs are fixedly connected to the bottom of the detection groove. A conductive block is fixedly connected to the bottom of the detection groove. A plurality of detection rods are slidably connected between both sides of the conductive block and the detection groove. The detection rods and the first springs are fixedly connected. A measuring unit is fixedly connected between every two detection rods.

[0005] Further, both sides of the top of the detection rod are fixedly connected with roller frames. An adjusting roller is rotatably connected between the roller frames.

[0006] Further, a plurality of conductive contacts are fixedly connected to the surface of the conductive block, and the conductive contacts are arrayed in multiple groups. The conductive contacts and the detection rods are slidably connected.

[0007] Further, the measuring unit includes a water tank. A fixing groove is formed in the surface of the detection rod near the top. The water tank is fixedly connected to the fixing groove. Two-thirds of water is filled in the water tank. A measuring groove is formed in the top surface of the water tank. An optical measuring device is hermetically and slidably connected in the measuring groove. A floating block is fixedly connected to the bottom of the optical measuring device.

[0008] Further, heat dissipation fins are symmetrically and fixedly connected to the surface of the water tank. Multiple groups of resistance blocks are fixedly connected to the inner wall of the water tank.

[0009] Further, pre-cleaning grooves are symmetrically formed in the interior of the detection base. A pre-cleaning unit is slidably connected to the inner wall of the pre-cleaning groove. The pre-cleaning unit includes an adjusting block which is slidably connected to the pre-cleaning groove. A second spring is fixedly connected between the bottom of the adjusting block and the pre-cleaning groove. A cleaning box is formed in the adjusting block. Cleaning liquid is filled in the cleaning box. Brush frames are fixedly connected to both sides of the top of the adjusting block. A roller brush is fixedly connected between the brush frames. A limiting hole is formed in the surface of the detection base near the moving direction. A limiting rod is slidably connected in the limiting hole. A drying fan is fixedly connected to the top of the limiting rod. The drying fan is fixedly connected to the adjusting block.

[0010] Further, the adjusting unit includes four hinge seats. The bottom of the hinge seat is fixedly connected to the adjusting piston. A hinge block is hinged in the middle of the hinge seat. The top of the hinge block is fixedly connected to the detection base.

[0011] Further, an anti-tipping footrest is fixedly connected to the surface of the detection vehicle on the side opposite to the moving direction. An anti-tipping button is arranged at the bottom of the anti-tipping footrest. The anti-tipping button is electrically connected to the detection vehicle.

[0012] The present invention has the following beneficial effects: 1. When the detection rod of the present invention moves upward, it will fully fit the segment. Since the measuring unit is fixed on the detection rod, the measuring unit will be closer to the segment and the gasket. Thus, the error caused by too far a distance during detection can be avoided, the gap size of the gasket can be detected more accurately, and whether to process it can be considered by comparing with the normal error. Since the detection rod and the measuring unit are arranged in an array, the number of measuring units is reduced, the production cost is reduced, and the maintenance is made simpler.

[0013] 2. When there is a height difference between the detection rods of the present invention, during detection, the floating block will lift the optical measuring device and keep the optical measuring device always horizontal, so as to avoid the optical measuring device from shifting due to the height difference of the detection rods and prevent errors in the measurement results. By setting the resistance block, the flow of water can be blocked when the water shakes. By reducing the fluidity of the water, the shaking of the water can be reduced, so that the water becomes stable faster, thereby reducing the influence of shaking on the measurement efficiency.

[0014] 3. After being cleaned by the pre-cleaning unit of the present invention, the influence of impurities on the surface of the segment and the gasket on the measurement accuracy can be avoided. Cleaning with the cleaning liquid can also prevent dust from flying and prevent the situation where dust falls on the light detector and causes inability to detect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the overall structure of the present invention (except for the detection unit); Figure 3 is a schematic diagram of the structure at the adjustment unit of the present invention; Figure 4 is a schematic diagram of the structure at the detection unit of the present invention; Figure 5 is a cross-sectional view of the detection unit of the present invention; Figure 6 is a schematic diagram of the structure at the measuring unit of the present invention; Figure 7 is an exploded view of the structure at the measuring unit of the present invention.

[0017] In the drawings, the list of components represented by each reference numeral is as follows: In the figure: 1. Detection vehicle; 11. Air pump; 12. Air delivery pipe; 13. Cylinder; 14. Adjusting piston; 15. Anti-tipping footrest; 2. Detection unit; 21. Detection base; 211. Detection groove; 212. Pre-cleaning groove; 22. Detection rod; 23. First spring; 24. Adjusting roller; 25. Conductive block; 251. Conductive contact point; 26. Measuring unit; 261. Water tank; 262. Optical measuring device; 263. Floating block; 264. Resistance block; 3. Pre-cleaning unit; 31. Adjusting block; 32. Second spring; 33. Roller brush; 34. Drying fan; 35. Limiting rod; 4. Adjusting unit; 41. Hinge seat; 42. Hinge block. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-7 As shown in the figure, the present invention is a cross-section monitoring device for an elastic sealing gasket of a shield tunnel segment, including a detection vehicle 1. A cavity is provided inside the detection vehicle 1. An air pump 11 is fixedly connected to the bottom of the cavity. Two air outlets are provided on both sides of the air pump 11. An air delivery pipe 12 is fixedly connected inside the air outlet. One end of the air delivery pipe 12 away from the air outlet is fixedly connected to a cylinder 13. An adjusting piston 14 is slidably connected inside the cylinder 13. The top of the adjusting piston 14 is fixedly connected to an adjusting unit 4. The top of the adjusting unit 4 is fixedly connected to a detection unit 2; The detection unit 2 includes a detection base 21. A detection groove 211 is provided in the middle of the inside of the detection base 21. A plurality of first springs 23 are fixedly connected to the bottom of the detection groove 211. A conductive block 25 is fixedly connected to the bottom of the detection groove 211. A plurality of detection rods 22 are slidably connected between both sides of the conductive block 25 and the detection groove 211; the detection rods 22 and the first springs 23 are fixedly connected. A measuring unit 26 is fixedly connected between every two detection rods 22.

[0020] In this embodiment, considering that tunnel segments are usually arc-shaped and the gaskets are also arc-shaped, it is necessary to compare and measure the curvature of the gaskets during detection, and at the same time, it is possible to detect whether there are gaps between the gaskets; in the prior art, when detecting the segments and gaskets on the top surface, the measuring unit 26 is usually arranged in the same plane and the segments and gaskets are directly detected. At this time, since the distance between the detecting unit 2 and the segments and gaskets is relatively far, and the detecting vehicle 1 will stop when it reaches the position of the gasket, the detecting unit 2 will shake at this time, which may cause some errors in the measurement results due to the shaking, and thus may lead to frequent adjustment of the position of the measuring unit 26 or the detecting vehicle 1 during detection; when using more measuring units 26 for synchronous detection to reduce measurement errors, it will lead to an increase in production costs, and the increase in the number of measuring units 26 will make the maintenance more cumbersome, and at the same time, the energy consumption during detection will be greater; During detection, by moving the detecting vehicle 1 to the designated position and preparing to start detection, the air pump 11 will be started at this time. The air pump 11 will deliver air into the cylinder 13 through the air delivery pipe 12, and the regulating piston 14 will be pushed to move by the air. At this time, the regulating piston 14 will push the regulating unit 4 upward and push the detecting base 21 upward. At the same time, the detecting rod 22 will be synchronously pushed upward. When the detecting rod 22 fits the segment, it will be squeezed into the detecting groove 211 and compress the first spring 23. When all the detecting rods 22 are squeezed, they will completely fit the segment. At this time, the measuring unit 26 can be powered on through the conductive block 25 to detect the gasket and the segment; since the measuring unit 26 is fixed on the detecting rod 22, the measuring unit 26 will be closer to the segment and the gasket, thus avoiding the errors caused by too far a distance during detection, and the position of the measuring unit 26 can be controlled according to the curvature of the segment. At the same time, the gap size of the gasket can be detected more accurately, and it can be considered whether to process it by comparing the normal error; since the detecting rods 22 and the measuring units 26 are arranged in an array, the number of measuring units 26 is reduced, the production cost is reduced, and at the same time, the detecting rods 22 and the measuring units 26 can be removed during maintenance, making the maintenance simpler; When measuring the contour and curvature of the gasket, the measuring unit 26 will use the CCD area array detection method in the prior art. First, light is irradiated on the pipe fittings and the gasket, and the light is reflected on the CCD photosensitive element. The photosensitive diodes in the photosensitive element can convert the light into an electrical signal and convert the electrical signal into an image. Subsequently, by analyzing the dot matrix data in the image, etc., the contour and curvature of the gasket can be understood; since the detecting vehicle 1 needs to move to the next gasket, the measuring unit 26 can be not turned off during the movement, and the contour and curvature of the segment can be measured during the movement, thereby judging whether the contour and curvature of the segment are qualified.

[0021] Specifically, roller frames are fixedly connected to both sides of the top of the detection rod 22, and an adjusting roller 24 is rotatably connected between the roller frames.

[0022] In this embodiment, considering that mobile detection will be performed when detecting the segment and the gasket, when the detection rod 22 moves, it will rub against the segment, which may not only cause wear of the segment, but also may cause errors in detection after long-term friction. When the detection rod 22 is rubbed too much and its length decreases, it may cause friction between the measuring unit 26 and the segment, resulting in damage to the measuring unit 26. Through the arrangement of the roller frames and the adjusting roller 24, the adjusting roller 24 can rotate during movement, avoiding direct friction between the detection rod 22 and the segment, reducing wear and friction between the segment and the detection rod 22, and reducing power consumption when the detection vehicle 1 moves; during detection, the adjusting roller 24 can fit more closely to the curvature of the segment, thereby making the adjustment of the adjusting rod more accurate.

[0023] Specifically, a plurality of conductive contacts 251 are fixedly connected to the surface of the conductive block 25, and multiple groups of conductive contacts 251 are arranged in an array. The conductive contacts 251 are all slidably connected to the detection rod 22.

[0024] In this embodiment, considering that in the prior art, when measuring curvature, the comparative measurement method is usually used. Before detection, data of the segment and the gasket installed normally are collected first, and subsequent detection is carried out by measuring the distance change between the measuring unit 26 and the segment and the gasket; if the measuring unit 26 fails and cannot work properly during detection, it will cause the curvature of the segment and the gasket to not be detected normally. Since the detection rod 22 and the measuring unit 26 are arranged in an array, detection can be carried out on a line during use. When the detection vehicle 1 moves, different segments and gaskets will be detected. When the heights of two segments are different, the detection rod 22 will move into the detection groove 211, and at this time, the contact with the conductive contacts 251 will be increased. The height difference between the segments can be understood through the number of conductive contacts 251 that are energized, and the accuracy of curvature detection can be increased; since the adjusting roller 24 can fit more closely to the curvature of the segment, the contact between the adjusting rod and the conductive contacts 251 can also be made more accurate, thereby obtaining more accurate curvature data.

[0025] Specifically, the measuring unit 26 includes a water tank 261, and a fixing groove is formed on the surface of the detection rod 22 near the top; the water tank 261 is fixedly connected to the fixing groove, two-thirds of water is filled in the water tank 261, and a measuring groove is formed on the top surface of the water tank 261; an optical measuring device 262 is hermetically slidably connected in the measuring groove, and a floating block 263 is fixedly connected to the bottom of the optical measuring device 262.

[0026] In this embodiment, considering that the measuring unit 26 is fixed on the detection rod 22, when there is a height difference between the segments due to impurities or installation, the detection rod 22 will also have a height difference, which will cause the measuring unit 26 to tilt. At this time, normal detection cannot be carried out, and the detection result will have a large error. When the detection rod 22 fits the curvature of the segment, the optical measuring device 262 will measure the curvature of the sealing strip at this time, and can also measure the curvature of the segment when the inspection vehicle 1 moves, and compare it with the detection result of the detection rod 22 and the conductive block 25. If there is a large error in the comparison result, the optical measuring device 262 needs to be repaired. When there is a height difference between the detection rods 22, the water in the water tank 261 will flow. Since the water will always remain horizontal under the influence of gravity, the floating block 263 will lift the optical measuring device 262 during detection, and make the optical measuring device 262 always remain horizontal, so as to avoid the optical measuring device 262 also shifting due to the height difference of the detection rod 22 and prevent errors in the measurement results. When the optical measuring device 262 is in measurement, a large amount of heat will be generated, and since the optical measuring device 262 will be used for a long time, the water in the water tank 261 can cool the optical measuring device 262 at this time, so as to avoid the temperature of the optical measuring device 262 being too high. This can not only increase the service life of the optical measuring device 262, but also make the measurable time of the optical measuring device 262 longer.

[0027] Specifically, heat dissipation fins are symmetrically and fixedly connected to the surface of the water tank 261, and multiple groups of resistance blocks 264 are fixedly connected to the inner wall of the water tank 261.

[0028] In this embodiment, considering that the inspection vehicle 1 will move and stop at the sealing gasket each time, at this time, the water in the water tank 261 may shake due to the inertia of the stop of the inspection vehicle 1. At this time, it is necessary to wait for the water to stop shaking before measurement, which will affect the measurement efficiency. By setting the resistance blocks 264, the flow of water can be blocked when the water shakes. By reducing the fluidity of the water, the shaking of the water can be reduced, so that the water becomes stable faster, thereby reducing the influence of shaking on the measurement efficiency; by setting the heat dissipation fins, the water in the water tank 261 can dissipate heat faster, so that the optical measuring device 262 always remains at a low temperature to prevent damage caused by high temperature of the optical measuring device 262.

[0029] Specifically, the detection base 21 is symmetrically provided with a pre-cleaning groove 212, and the inner wall of the pre-cleaning groove 212 is slidably connected with a pre-cleaning unit 3; the pre-cleaning unit 3 includes an adjusting block 31, the adjusting block 31 is slidably connected with the pre-cleaning groove 212, a second spring 32 is fixedly connected between the bottom of the adjusting block 31 and the pre-cleaning groove 212, a cleaning box is provided inside the adjusting block 31, and the cleaning box is filled with cleaning liquid; both sides of the top of the adjusting block 31 are fixedly connected with brush holders, and roller brushes 33 are fixedly connected between the brush holders; A limiting hole is provided on the surface of the detection base 21 close to the moving direction, a limiting rod 35 is slidably connected in the limiting hole, a drying fan 34 is fixedly connected to the top of the limiting rod 35, and the drying fan 34 is fixedly connected to the adjustment block 31.

[0030] In this embodiment, considering that dust and impurities may be encountered during the measurement process, the optical measuring device 262 may affect the accuracy of the measurement, thereby causing deviations in the detection results; By setting the adjustment block 31, it can be adjusted according to the curvature of the pipe segment. When the detection base 21 moves upward, the adjustment block 31 will compress the second spring 32 downward, thereby fitting the curvature of the pipe segment. By setting the brush holder and the roller brush 33, the roller brush 33 can clean the impurities on the surface of the pipe segment when passing through the pipe segment. When the roller brush 33 rotates, it will contact the cleaning liquid in the cleaning box, so that the roller brush 33 can clean the pipe segment with the cleaning liquid, so that the originally adhered impurities can be brushed off after contacting with the liquid cleaning liquid; then the cleaning liquid remaining on the pipe segment can be dried by the drying fan 34; After cleaning by the pre-cleaning unit 3, it is possible to prevent impurities on the surface of the impurity tube segment and the sealing gasket from affecting the measurement accuracy. Cleaning with the cleaning fluid can also prevent dust from flying and prevent dust from falling on the light detector, resulting in a situation where detection cannot occur.

[0031] Specifically, the adjustment unit 4 includes four articulated seats 41 , the bottom of the articulated seats 41 is fixedly connected to the adjustment piston 14 , the middle of the articulated seats 41 is hinged with an articulated block 42 , and the top of the articulated block 42 is fixedly connected to the detection base 21 .

[0032] In this embodiment, it is considered that the detection vehicle 1 may tilt due to uneven ground when it moves, which will cause the detection unit 2 to tilt as well. When the detection unit 2 tilts, the detection rod 22 will tilt as well. At this time, when the detection rod 22 contacts the top pipe segment, the detection rods 22 on both sides of the detection base 21 may not contact the pipe segment synchronously. At this time, the measurement data of the detection rod 22 on one side will be larger, which will cause errors in the measurement results, thereby affecting the accuracy of the measurement. When the ground is uneven, when the detection rod 22 contacts the top surface, the detection rod 22 will move downward and contact the conductive block 25. Whether the device is tilted is judged by the contact situation between the detection rod 22 near the four outermost corners of the detection base 21 and the conductive block 25. When it is detected that only some of the detection rods 22 contact the top surface, it can be known at this time that the device is tilted. Then, the air pump 11 blows different amounts of air into the cylinder 13 to adjust the height of the adjusting piston 14. And the detection base 21 can be tilted through the hinge between the hinge seat 41 and the hinge block 42. When the contact points between the detection rods 22 near the four outermost corners of the detection base 21 and the conductive contacts 251 on the conductive block 25 are the same, the plane formed between the detection rods 22 near the four outermost corners of the detection base 21 will be parallel to the detection base 21 at this time, and the tilt angle caused by the uneven ground will be offset at this time; When the plane formed between the detection rods 22 near the four outermost corners of the detection base 21 is parallel to the detection base 21, at this time, the air pump 11 blows the same amount of air into the cylinder 13, so that the detection rods 22 rise synchronously. At this time, the contact between the detection rods 22 and the top surface can be made completely the same. Thus, when the ground is uneven, the measurement data of the device can be made more accurate through adaptive adjustment; when a detection rod 22 cannot contact the top surface for a long time, it can be judged that there is a depression at the detection rod 22. When a detection rod 22 contacts the top surface earlier than other detection rods 22, it can be judged that there is a protrusion here. Thus, not only can the measurement data be made more accurate, but the defects of the segment can also be detected during the measurement; and when measuring the top surface that is not the positive top surface, the angle of the detection base 21 can be changed, and the tops with different angles can be measured, so that the measurable range can be larger.

[0033] Specifically, an anti - tipping footrest 15 is fixedly connected to the surface of the detection vehicle 1 on the side opposite to the moving direction. An anti - tipping button is arranged at the bottom of the anti - tipping footrest 15, and the anti - tipping button is electrically connected to the detection vehicle 1.

[0034] In this embodiment, considering that when the detection vehicle 1 is moving, when the gap between two segments is relatively large, it may cause the detection unit 2 to be blocked or stuck. At this time, if the detection vehicle 1 continues to move, it will cause the whole device to tip over; The setting of the anti - tipping footrest 15 can prevent the device from tipping over due to being blocked or stuck. And when it tilts to a certain angle, the anti - tipping button at the bottom of the anti - tipping footrest 15 will contact the ground and press the anti - tipping button. At this time, an emergency stop will be carried out on the detection vehicle 1, and the movement of the detection vehicle 1 will be stopped to prevent tipping over caused by too large a tilt angle.

[0035] When in use, First, during detection, the inspection vehicle 1 is moved to a specified position and detection is about to start. At this time, the air pump 11 is started. The air pump 11 delivers air into the cylinder 13 through the air delivery pipe 12, and the air pushes the adjustment piston 14 to move. At this time, the adjustment piston 14 pushes the adjustment unit 4 upward and pushes the detection base 21 upward; By blowing different amounts of air from the air pump 11 into the cylinders 13 on both sides, the heights of the adjustment pistons 14 on both sides can be made different. At this time, the detection base 21 can be tilted through the hinge between the hinge seat 41 and the hinge block 42. As a result, the angle of the detection base 21 can be changed, and the tops with different angles can be measured, making the measurable range larger; When the ground is uneven, when the detection rod 22 contacts the top surface, the detection rod 22 will move downward and contact the conductive block 25. Whether the device is tilted is judged by the contact situation between the detection rods 22 near the four corners of the outermost side of the detection base 21 and the conductive block 25. When it is detected that only some of the detection rods 22 contact the top surface, it can be known at this time that the device is tilted. Then, different amounts of air are blown from the air pump 11 into the cylinders 13 to adjust the height of the adjustment piston 14, and the detection base 21 can be tilted through the hinge between the hinge seat 41 and the hinge block 42. When the contact points between the detection rods 22 near the four corners of the outermost side of the detection base 21 and the conductive contacts 251 on the conductive block 25 are the same, the plane formed between the detection rods 22 near the four corners of the outermost side of the detection base 21 will be parallel to the detection base 21. At this time, the tilt angle caused by the uneven ground will be offset; When the plane formed between the detection rods 22 near the four corners of the outermost side of the detection base 21 is parallel to the detection base 21, the same amount of air is blown from the air pump 11 into the cylinders 13 at this time, so that the detection rods 22 rise synchronously. At this time, the contact between the detection rods 22 and the top surface can be made completely the same. Thus, when the ground is uneven, the measurement data of the device can be made more accurate through adaptive adjustment; when one of the detection rods 22 fails to contact the top surface for a long time, it can be judged that there is a depression at the detection rod 22. When one of the detection rods 22 contacts the top surface earlier than the other detection rods 22, it can be judged that there is a protrusion here. Thus, not only can the measurement data be made more accurate, but the defects of the segment can also be detected during the measurement; and when measuring the top surface that is not a positive top surface, the angle of the detection base 21 can be changed, and the tops with different angles can be measured, making the measurable range larger; By setting the adjustment block 31, adjustment can be made according to the curvature of the segment. When the detection base 21 moves upward, it will compress the second spring 32 downward by the adjustment block 31, and thus fit the curvature of the segment. Through the settings of the brush holder and the roller brush 33, when passing through the segment, the roller brush 33 will clean the impurities on the surface of the segment. When the roller brush 33 rotates, it will contact the cleaning liquid in the cleaning box, enabling the roller brush 33 to clean the segment with the cleaning liquid, so that the originally adhered impurities can be brushed off after contacting the liquid cleaning liquid; subsequently, the drying fan 34 can dry the remaining cleaning liquid on the segment. After cleaning by the pre-cleaning unit 3, it is possible to avoid the influence of impurities on the surface of the segment and the gasket on the measurement accuracy. Cleaning with the cleaning liquid can also prevent dust from flying and prevent dust from falling on the light detector, resulting in a situation where detection is impossible.

[0036] Secondly, when the detection base 21 moves upward, the detection rod 22 will move upward synchronously. When the detection rod 22 fits the segment, it will be squeezed into the detection groove 211 and compress the first spring 23. When all the detection rods 22 are squeezed, they will completely fit the segment. At this time, the measurement unit 26 can be powered on through the conductive block 25 to detect the gasket and the segment; since the measurement unit 26 is fixed on the detection rod 22, the measurement unit 26 will be closer to the segment and the gasket, thus avoiding errors caused by too far a distance during detection, and the position of the measurement unit 26 can be controlled according to the curvature of the segment. At the same time, the gap size of the gasket can be detected more accurately, and it can be considered whether to process by comparing the normal error; since the detection rods 22 and the measurement units 26 are arranged in an array, the number of measurement units 26 is reduced, the production cost is reduced, and at the same time, the detection rods 22 and the measurement units 26 can be removed during maintenance, making the maintenance simpler. When measuring the contour and curvature of the gasket, the measurement unit 26 will use the CCD area array detection method in the existing technology. First, light is irradiated on the pipe fitting and the gasket, and the light is reflected on the CCD photosensitive element, enabling the photosensitive diodes in the photosensitive element to convert the light into an electrical signal and convert the electrical signal into an image. Subsequently, by analyzing the dot matrix data in the image, etc., the contour and curvature of the gasket can be understood; since the detection vehicle 1 needs to move to the next gasket, the measurement unit 26 can be kept on during the movement, and the contour and curvature of the segment can be measured during the movement, thereby judging whether the contour and curvature of the segment are qualified. Through the settings of the roller holder and the adjusting roller 24, the adjusting roller 24 can rotate during movement, avoiding direct friction between the detection rod 22 and the segment, reducing the wear and friction force of the segment and the detection rod 22, and reducing the power consumption during the movement of the detection vehicle 1; during detection, the adjusting roller 24 can be made to fit the curvature of the segment more closely, thereby making the adjustment of the adjusting rod more accurate. Since the detection rods 22 and the measurement units 26 are arranged in an array, during use, detection can be performed on a line. When the detection vehicle 1 moves, different segments and gaskets can be detected. When the heights of two segments are different, the detection rods 22 will move into the detection slots 211. At this time, the contact with the conductive contacts 251 will increase. The height difference between the segments can be understood by the number of energized conductive contacts 251, and the accuracy of curvature detection can be increased. Since the adjusting rollers 24 can fit the curvature of the segments better, the contact between the adjusting rods and the conductive contacts 251 can also be made more precise, thereby obtaining more accurate curvature data.

[0037] Finally, when the detection rods 22 fit the curvature of the segments, the optical measuring device 262 will measure the curvature of the sealing strip at this time, and the curvature of the segments can also be measured when the detection vehicle 1 moves, and the results are compared with the detection results of the detection rods 22 and the conductive blocks 25. If there is a large error in the comparison results, the optical measuring device 262 needs to be repaired; When there is a height difference between the detection rods 22, the water in the water tank 261 will flow. Since the water will always remain horizontal under the influence of gravity, the floating block 263 will lift the optical measuring device 262 during detection, and the optical measuring device 262 will always remain horizontal, thus preventing the optical measuring device 262 from shifting due to the height difference of the detection rods 22 and preventing errors in the measurement results; When the optical measuring device 262 is in use, a large amount of heat will be generated, and since the optical measuring device 262 will be used for a long time, the water in the water tank 261 can cool the optical measuring device 262 at this time, thus preventing the temperature of the optical measuring device 262 from being too high. This can not only increase the service life of the optical measuring device 262, but also make the measurable time of the optical measuring device 262 longer; By setting the resistance block 264, the flow of water can be blocked when the water shakes. By reducing the fluidity of the water, the shaking of the water can be reduced, so that the water becomes stable faster, thereby reducing the influence of shaking on the measurement efficiency. By setting the heat sink, the water in the water tank 261 can dissipate heat faster, so that the optical measuring device 262 always remains at a low temperature to prevent damage caused by high temperature of the optical measuring device 262.

[0038] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A shield tunnel segment elastic sealing gasket cross-section monitoring device, comprising a detection vehicle (1), characterized in that: The detection vehicle (1) has a cavity inside, the bottom of the cavity is fixedly connected to an air pump (11), two air outlets are arranged on both sides of the air pump (11), the air outlet is fixedly connected to an air pipe (12), one end of the air pipe (12) away from the air outlet is fixedly connected to a cylinder (13), an adjusting piston (14) is slidably connected inside the cylinder (13), the top of the adjusting piston (14) is fixedly connected to an adjusting unit (4), and the top of the adjusting unit (4) is fixedly connected to a detection unit (2); The detection unit (2) comprises a detection base (21), a detection slot (211) is provided in the middle of the detection base (21), a plurality of first springs (23) are fixedly connected to the bottom of the detection slot (211), a conductive block (25) is fixedly connected to the bottom of the detection slot (211), and a plurality of detection rods (22) are slidably connected between the two sides of the conductive block (25) and the detection slot (211); the detection rods (22) are fixedly connected to the first springs (23), and a measuring unit (26) is fixedly connected between every two detection rods (22).

2. The shield tunnel segment elastic sealing gasket cross-section monitoring device according to claim 1 is characterized by: Both sides of the top of the detection rod (22) are fixedly connected to roller frames, and an adjusting roller (24) is rotatably connected between the roller frames.

3. The shield tunnel segment elastic sealing gasket section monitoring device according to claim 1 is characterized by: A plurality of conductive contacts (251) are fixedly connected to the surface of the conductive block (25), and the conductive contacts (251) are arrayed in a plurality of groups, and the conductive contacts (251) are slidably connected to the detection rod (22).

4. The shield tunnel segment elastic sealing gasket section monitoring device according to claim 1 is characterized by: The measuring unit (26) comprises a water tank (261); a fixing groove is provided on the surface of the detection rod (22) near the top; the water tank (261) is fixedly connected to the fixing groove; two-thirds of the water is filled in the water tank (261); a measuring groove is provided on the top surface of the water tank (261); an optical measuring device (262) is sealingly and slidably connected in the measuring groove; a floating block (263) is fixedly connected to the bottom of the optical measuring device (262).

5. The shield tunnel segment elastic sealing gasket section monitoring device according to claim 4 is characterized by: The surface of the water tank (261) is symmetrically and fixedly connected with heat sinks, and the inner wall of the water tank (261) is fixedly connected with multiple groups of resistance blocks (264).

6. The shield tunnel segment elastic sealing gasket section monitoring device according to claim 1 is characterized by: A pre-cleaning groove (212) is symmetrically provided inside the detection base (21), and a pre-cleaning unit (3) is slidably connected to the inner wall of the pre-cleaning groove (212); the pre-cleaning unit (3) comprises an adjusting block (31), the adjusting block (31) is slidably connected to the pre-cleaning groove (212), a second spring (32) is fixedly connected between the bottom of the adjusting block (31) and the pre-cleaning groove (212), a cleaning box is provided inside the adjusting block (31), and cleaning liquid is poured into the cleaning box; brush holders are fixedly connected to both sides of the top of the adjusting block (31), and roller brushes (33) are fixedly connected between the brush holders; A limiting hole is provided on the surface of the detection base (21) on the side close to the moving direction, a limiting rod (35) is slidably connected in the limiting hole, a drying fan (34) is fixedly connected to the top of the limiting rod (35), and the drying fan (34) is fixedly connected to the adjustment block (31).

7. The shield tunnel segment elastic sealing gasket section monitoring device according to claim 1 is characterized by: The adjustment unit (4) comprises four articulated seats (41), the bottom of each articulated seat (41) is fixedly connected to the adjustment piston (14), the middle of each articulated seat (41) is articulated with an articulated block (42), and the top of each articulated block (42) is fixedly connected to the detection base (21).

8. The shield tunnel segment elastic sealing gasket section monitoring device according to claim 1 is characterized by: An anti-falling stand (15) is fixedly connected to the surface of the side of the inspection vehicle (1) opposite to the moving direction, and an anti-falling button is arranged at the bottom of the anti-falling stand (15), and the anti-falling button is electrically connected to the inspection vehicle (1).

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