Precast tubular pile perpendicularity detection system and detection method based on static press

Abstract

The invention relates to the technical field of perpendicularity detection, in particular to a system and method for detecting the perpendicularity of a prefabricated tubular pile based on a static press, and the system comprises a perpendicularity detection module which detects the perpendicularity information of the prefabricated tubular pile through transmitting laser rays, and comprises a distance measurement assembly and a control module, the parameter detection component is used for detecting the offset of the laser; the position restraining module is used for restraining the horizontal position of the distance measuring assembly; a communication module; the control module is used for judging whether the deviation degree of the laser meets the requirement or not according to the temperature difference quantity between the static press base and the pile clamping opening, and when the deviation degree does not meet the requirement, the adjusting mode of the distance measuring assembly is determined according to the temperature distribution type of the static press base in the horizontal direction or the levelness adjusting duration is adjusted. Or the moving speed of the position restraining module in the vertical direction is adjusted. The accuracy of perpendicularity detection of the prefabricated pipe pile is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of verticality detection, and in particular to a prefabricated pipe pile verticality detection system and detection method based on a static press. Background Art

[0002] The existing technology mainly includes laser interferometer and laser plumb line. In terms of verticality measurement, laser interferometer is realized by two sets of straightness measurement of orthogonal axes, in which the straightness reflector is used as a common reference datum, which remains in place and is not adjusted during the measurement process; using laser dual longitudinal mode thermal frequency stabilization technology, laser interferometer can achieve high-precision, strong anti-interference ability, and good long-term stability of laser frequency output, the accuracy can reach the nanometer level, and can accurately measure the slight change of verticality. In addition, laser interferometer also has the advantages of non-contact, fast measurement speed, and high resolution; laser plumb line determines the target position and direction by emitting and receiving laser beams, so as to measure verticality. It uses the monochromatic, coherent and focused laser beam generated by the laser, which is reflected or transmitted to the target surface through the reflective element, and then the receiver receives the reflected or transmitted laser beam for measurement and analysis; laser plumb line has the advantages of non-contact measurement, long-distance measurement and versatility, and can perform accurate measurement in various complex environments and remote measurement tasks.

[0003] Chinese Patent Publication No.: CN113846710A discloses a method for detecting the verticality of a static pressure pile. The static pressure pile adopts a prefabricated pipe pile, a fixing frame is arranged above the pile hole of the prefabricated pipe pile, the fixing frame is provided with a channel for the prefabricated pipe pile to pass through, an inclinometer is arranged on the fixing frame, two pairs of upper and lower slide rails are arranged on the fixing frame, each pair of slide rails are symmetrically arranged on both sides of the through hole and are located on the same horizontal plane, a laser rangefinder is arranged on the slide rail, and the laser rangefinder can slide along the slide rail and measure the distance to the contour point of the prefabricated pipe pile; the static pressure pile verticality detection method comprises: setting a rectangular coordinate system; measuring the inclination of the fixing frame along the x-axis by the inclinometer θx0, inclination angle θy0 along the y-axis direction; the laser rangefinders on the two pairs of slide rails slide along the slide rails, and the sliding range covers the contour of one side of the prefabricated pipe pile, and the distance from the laser rangefinder to the laser irradiation point on the surface of the prefabricated pipe pile at the section is measured respectively; the contour line of the prefabricated pipe pile of each pair of laser rangefinder measurement section is drawn, and the contour line is an ellipse, and the coordinates of the center points O1 and O2 of the two ellipses are calculated respectively, and then the inclination angle θx1 along the x-axis and the inclination angle θy1 along the y-axis of the line connecting O1 and O2 are calculated; the inclination angle θx along the x-axis and the inclination angle θy along the y-axis of the prefabricated pipe pile taking into account the inclination of the fixed frame are calculated; among which, θx=θx0+θx1, θy=θy0+θy1. It can be seen that the static pressure pile verticality detection method has problems such as the instability of the laser rangefinder's position making it impossible to keep the laser rangefinder always horizontal, resulting in a decrease in detection accuracy; the fog generated by the humidity in the detection environment causes the emitted laser to deviate, resulting in a decrease in verticality accuracy; and the humid piling environment causes signal transmission to be interfered by rust and moisture, resulting in a decrease in detection stability. Summary of the invention

[0004] To this end, the present invention provides a prefabricated pipe pile verticality detection system and detection method based on a static press, so as to overcome the problems in the prior art that the laser rangefinder cannot be kept horizontal due to the unstable position of the laser rangefinder, resulting in a decrease in detection accuracy, the emitted laser is offset due to the fog generated by the humidity in the detection environment, resulting in a decrease in verticality accuracy, and the signal transmission is interfered by rust and moisture due to the humid piling environment, resulting in a decrease in detection stability.

[0005] To achieve the above object, the present invention provides a prefabricated pipe pile verticality detection system based on a static press, comprising:

[0006] A verticality detection module detects the verticality information of the prefabricated pipe pile by emitting laser lines, including a distance measuring component for emitting lasers in the x-direction and y-direction of the prefabricated pipe pile to obtain verticality information and a parameter detection component for detecting the temperature and humidity of the static press base and the offset of the laser;

[0007] A position constraint module, connected to the verticality detection module, for constraining the horizontal position of the distance measuring component;

[0008] A communication module, connected to the verticality detection module, for transmitting the verticality information to a display terminal;

[0009] A control module, which is respectively connected to the verticality detection module, the communication module and the position constraint module, is used to determine whether the deviation degree of the laser meets the requirements according to the temperature difference between the static press base and the clamping opening, and when it does not meet the requirements, determine the adjustment mode of the distance measuring component according to the temperature distribution type in the horizontal direction of the static press base,

[0010] Or, adjusting the horizontal adjustment time according to the vertical signal delay time,

[0011] Or, adjusting the moving speed of the position constraint module in the vertical direction according to the linear fit between the verticality signal interruption frequency and the humidity of the static press base,

[0012] The adjustment method of the distance measuring component includes adjusting the laser detection position, or adjusting the laser emission intensity according to the offset of the laser.

[0013] Furthermore, the distance measuring component comprises:

[0014] A first laser rangefinder is arranged on a side of the static press base close to the prefabricated pipe pile along the x direction of the prefabricated pipe pile, and is used to detect the horizontal distance between the first laser rangefinder and the side wall of the prefabricated pipe pile;

[0015] A second laser rangefinder, which is arranged above the first laser rangefinder in a vertical direction, and is used to detect the oblique distance between the second laser rangefinder and the side wall of the prefabricated pipe pile;

[0016] A third laser rangefinder is arranged on the side of the static press base close to the prefabricated pipe pile along the y direction of the prefabricated pipe pile, and is used to detect the horizontal distance between the third laser rangefinder and the side wall of the prefabricated pipe pile;

[0017] a fourth laser rangefinder, which is arranged above the third laser rangefinder in the vertical direction, and is used to detect the oblique distance between the second laser rangefinder and the side wall of the prefabricated pipe pile,

[0018] Among them, the acute angle formed between the first laser rangefinder and the second laser rangefinder is 45°, and the acute angle formed between the third laser rangefinder and the fourth laser rangefinder is 45°.

[0019] Furthermore, the position constraint module includes:

[0020] A first horizontal platform, which is arranged below the first laser rangefinder and the second laser rangefinder, and is used to fix the positions of the first laser rangefinder and the second laser rangefinder;

[0021] A first leg group, which is connected to the first horizontal platform and keeps the first horizontal platform in a horizontal state by adjusting the height in the vertical direction;

[0022] A first level, which is arranged on the upper surface of the first horizontal platform and is used to detect the levelness of the first horizontal platform;

[0023] A second horizontal platform is arranged below the third laser rangefinder and the fourth laser rangefinder, and is used to fix the positions of the third laser rangefinder and the fourth laser rangefinder;

[0024] A second leg group, connected to the second horizontal platform, and adjusting the height in the vertical direction to keep the second horizontal platform in a horizontal state;

[0025] A second level, which is arranged on the upper surface of the second horizontal platform and is used to detect the levelness of the second horizontal platform,

[0026] Wherein, the first leg group and the second leg group respectively include four adjustable legs arranged in a rectangular shape.

[0027] Furthermore, the parameter detection component includes:

[0028] An infrared thermal imaging thermometer, which is arranged above the distance measuring component and is used to detect the horizontal temperature of the static press base;

[0029] A humidity sensor group, which is arranged on one side of the static press base close to the position constraint module, for detecting the humidity of the static press base, wherein the humidity sensor group includes a plurality of humidity sensors arranged at equal intervals on one side of the static press base close to the first leg group along the x direction of the prefabricated pipe pile and a plurality of humidity sensors arranged at equal intervals on one side of the static press base close to the second leg group along the y direction of the prefabricated pipe pile;

[0030] A laser interferometer group, which is respectively connected to the first horizontal platform and the second horizontal platform, for detecting the offset of the laser, wherein the laser interferometer group includes a first laser interferometer arranged on the first horizontal platform close to the first laser rangefinder along the x direction of the prefabricated pipe pile, and a second laser interferometer arranged on the second horizontal platform close to the third laser rangefinder along the y direction of the prefabricated pipe pile.

[0031] Furthermore, the control module is connected to the infrared thermal imaging thermometer to obtain the temperature of the static press base near the prefabricated pipe pile and the temperature of the distance measuring component, and calculate the temperature difference. If the temperature difference is greater than the preset difference, it is determined that the offset degree of the laser does not meet the requirements, and the temperature imaging map of the static press base is obtained.

[0032] If the temperature distribution state in the temperature imaging map in the horizontal direction extending from the clamping opening to the position constraint module is increasing, it is determined that the temperature distribution type is a tree ring type;

[0033] If the temperature distribution state in the direction extending horizontally outward from the center position of the prefabricated pipe pile in the temperature imaging map is from decreasing to increasing, it is determined that the temperature distribution type is funnel-shaped.

[0034] Further, the control module is connected to the infrared thermal imaging thermometer and the distance measuring component respectively, so as to perform laser distance measurement at a low temperature position where the horizontality meets the requirements when the temperature distribution type is a funnel type;

[0035] When the temperature distribution type is the annual ring type, the offset of the laser is obtained. If the offset is greater than the preset second offset, it is determined that the laser offset range does not meet the requirements, and when the position constraint module adjusts the horizontality, when the adjustable leg close to one side of the prefabricated pipe pile reaches the maximum length, the emission intensity of the laser is increased.

[0036] The emission intensity of the laser is positively correlated with the offset.

[0037] Further, the control module is connected to the communication module and the position constraint module respectively, so as to preliminarily determine that the degree of interference of the signal by corrosion does not meet the requirements when the offset is greater than or equal to the preset first offset and less than or equal to the preset second offset, and obtain the signal delay time of the verticality;

[0038] If the signal delay time is longer than the preset second delay time, the second determination is made that the signal is not interfered by corrosion to the extent required, and the horizontal adjustment time of the position constraint module before detection is increased.

[0039] The horizontal adjustment duration is positively correlated with the signal delay duration.

[0040] Further, the control module is connected to the communication module and the position constraint module respectively, so as to preliminarily determine that the interference degree of humidity on the signal does not meet the requirement when the signal delay time is greater than or equal to the preset first delay time and less than or equal to the preset second delay time, and obtain the verticality signal interruption frequency and the humidity of the static compressor base to calculate the linear fit degree of the signal interruption frequency and the humidity;

[0041] If the linear fit is less than the preset linear fit, it is determined that the interference degree of moisture on the signal does not meet the requirement, and the moving speed of the position constraint module in the vertical direction is increased.

[0042] Furthermore, the moving speed is positively correlated with the linear fit.

[0043] The present invention also provides a method for detecting the verticality of prefabricated pipe piles based on a static press, comprising:

[0044] adjusting the moving speed of the position constraint module in the vertical direction according to the linear fit between the verticality signal interruption frequency and the humidity at the laser emission position;

[0045] Controlling the position constraint module to move in a vertical direction according to the moving speed before detection;

[0046] Obtain the temperature in the horizontal direction of the laser emission position and determine the temperature distribution type;

[0047] Determining a laser adjustment method according to the temperature distribution type, including adjusting a laser detection position and adjusting a laser emission intensity;

[0048] Adjust the horizontal adjustment time according to the vertical signal delay time;

[0049] Controlling the position constraint module to adjust the horizontality according to the horizontality adjustment duration;

[0050] According to the laser adjustment method, laser is emitted to the prefabricated pipe pile to detect the verticality of the prefabricated pipe pile.

[0051] Compared with the prior art, the beneficial effect of the present invention lies in that the system of the present invention is provided with a verticality detection module, a communication module, a parameter detection component and a control degree module, and by adjusting the distance measurement position and the laser emission intensity according to the temperature and humidity of the static press base, since the piling space is located below the static press and close to the ground, the detection accuracy of the laser in the piling space is affected by the environmental humidity and temperature and then deviates, resulting in a decrease in the detection accuracy, and by adjusting the distance measurement position and the laser emission intensity, the laser path is adjusted when the laser deviation is large, thereby improving the accuracy of verticality detection and compensating for the laser deviation caused by environmental factors; since the humidity in the piling space is prone to rusting of the mechanical structure, the rusting will cause the signal magnetic field to change and thus affect the stability of signal transmission, by adjusting the horizontality adjustment time, the rust shedding situation is increased and thus the interference caused by the rust on the signal transmission is reduced; since the data line for communication is affected by humidity in a humid environment and the signal transmission is unstable, by adjusting the moving rate of the position constraint module in the vertical direction, the stability of the detection process is ensured, and the communication interruption caused by the moisture of the data line is avoided, thereby achieving the improvement of detection efficiency and accuracy.

[0052] Furthermore, the system of the present invention is provided with a first laser rangefinder, a second laser rangefinder, a third laser rangefinder and a fourth laser rangefinder, which respectively measure the distance in four directions of the prefabricated pipe piles, thereby reflecting the installation verticality information of the square pipe piles in real time. Each group of laser rangefinders has a high-precision distance measurement capability, thereby obtaining data such as the verticality, offset azimuth, and offset of the pipe piles. When the offset in a certain direction exceeds a preset range, the communication module will send the obtained result to the display terminal and then issue an offset alarm, thereby ensuring that the verticality of the prefabricated pipe piles meets the requirements and achieving improved detection accuracy.

[0053] Furthermore, the system of the present invention is provided with a first horizontal platform, a first leg group, a first spirit level, a second horizontal platform, a second leg group and a second spirit level. During the piling process, the prefabricated pipe piles may shake due to uneven ground or uneven soil hardness, thereby affecting the accuracy of verticality detection. The height of the legs is adjusted to keep the laser rangefinder stable on the horizontal plane, thereby reducing the error caused by uneven ground. The spirit level is used to monitor the horizontal state of the horizontal platform in real time. Once a horizontal deviation is detected, it can be compensated by adjusting the height of the leg group to ensure the horizontality of the detection, thereby improving the stability of the detection.

[0054] Furthermore, the system of the present invention is equipped with an infrared thermal imaging thermometer and a humidity sensor group. Due to the dark and humid environment in the piling space, the laser path will deviate during the laser detection process, thereby affecting the accuracy of the verticality measurement; the external thermal imaging thermometer and humidity sensor can monitor the temperature and humidity near the static press base in real time to detect the static press base environment, thereby improving the detection accuracy.

[0055] Furthermore, the system of the present invention sets a preset difference amount. Since the laser path is affected by light and temperature, which leads to errors in the intensity of received reflected light or deviation of the laser path, the temperature distribution near the base of the static press is monitored in real time to generate a temperature imaging map, thereby identifying the temperature distribution type and achieving improved detection stability.

[0056] Furthermore, the system of the present invention performs laser ranging at a low-temperature position where the horizontality meets the requirements to reduce the deviation of the laser path caused by temperature changes. In a low-temperature environment, the propagation path of the laser is relatively stable and is not easily disturbed by factors such as air refraction. Therefore, ranging is performed at such a position to improve the detection accuracy. By setting a preset first offset, the degree of deviation caused by laser scattering increases due to uneven distribution of fog caused by humidity at various positions in the piling space due to different temperatures. By increasing the emission intensity of the laser, it is ensured that the laser can accurately irradiate the surface of the prefabricated pipe pile, thereby improving the accuracy of verticality detection.

[0057] Furthermore, the system of the present invention sets a preset second delay time. Since the mechanical device in the piling space is subject to a high degree of corrosion due to moisture, which increases the interference with signal transmission, the mechanical device is given more time to adapt to and adjust the signal transmission interference caused by rust by increasing the horizontality adjustment time of the position constraint module. In addition, the rust on the mechanical mechanism is shaken off during the horizontality adjustment process, ensuring stable transmission of the signal during the detection process, thereby improving the stability of verticality detection.

[0058] Furthermore, the system of the present invention sets a preset linear fit. Since the data cable used for signal transmission is in a humid environment on the ground, the data cable has poor contact, which leads to increased signal transmission interruption, affecting the continuity of detection. By calculating the linear fit between the signal interruption frequency and the humidity of the static press base, the degree to which the data cable is affected by moisture is evaluated. When the linear fit is lower than the preset value, it means that the data cable is seriously affected by moisture. At this time, by increasing the moving rate of the position constraint module in the vertical direction and increasing the swing of the data cable, the moisture degree of the data cable is reduced, and the signal interruption caused by the data cable contacting moisture is reduced, thereby achieving an increase in the continuity and stability of the verticality detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 The overall structural diagram of the prefabricated pipe pile verticality detection system based on the static press according to the embodiment of the present invention;

[0060] Figure 2 Another perspective structural diagram of the prefabricated pipe pile verticality detection system based on a static press according to an embodiment of the present invention;

[0061] Figure 3 The overall structural block diagram of the prefabricated pipe pile verticality detection system based on the static press according to the embodiment of the present invention;

[0062] Figure 4 This is a structural block diagram of a verticality detection module of a prefabricated pipe pile verticality detection system based on a static press according to an embodiment of the present invention;

[0063] Explanation of the accompanying numbers: 1-prefabricated pipe piles, 2-first laser interferometer, 3-adjustable legs, 4-first level, 5-first horizontal platform, 6-second laser rangefinder, 7-second laser interferometer, 8-second level, 9-second horizontal platform, 10-fourth laser rangefinder, 11-data cable, 12-display terminal, 13-humidity sensor, 14-third laser rangefinder, 15-infrared thermal imaging thermometer, 16-static press base, 17-static press. DETAILED DESCRIPTION

[0064] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0065] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0066] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0067] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, they are respectively an overall structural diagram of a prefabricated pipe pile verticality detection system based on a static press according to an embodiment of the present invention, a structural diagram from another angle, an overall structural block diagram, and a structural block diagram of a verticality detection module. A prefabricated pipe pile verticality detection system based on a static press according to an embodiment of the present invention comprises:

[0069] A verticality detection module detects the verticality information of the prefabricated pipe pile 1 by emitting laser lines, including a distance measuring component for emitting lasers in the x direction and y direction of the prefabricated pipe pile 1 to obtain verticality information and a parameter detection component for detecting the temperature and humidity of the static press base 16 and the offset of the laser;

[0070] A position constraint module, connected to the verticality detection module, for constraining the horizontal position of the distance measuring component;

[0071] A communication module, connected to the verticality detection module, for transmitting the verticality information to the display terminal 12;

[0072] A control module is connected to the verticality detection module, the communication module and the position constraint module respectively, and is used to determine whether the deviation degree of the laser meets the requirements according to the temperature difference between the static press base 16 and the clamping opening, and when it does not meet the requirements, determine the adjustment mode of the distance measuring component according to the temperature distribution type in the horizontal direction of the static press base 16,

[0073] Or, adjusting the horizontal adjustment time according to the vertical signal delay time,

[0074] Or, the moving speed of the position constraint module in the vertical direction is adjusted according to the linear fit between the verticality signal interruption frequency and the humidity of the static press base 16,

[0075] The adjustment method of the distance measuring component includes adjusting the laser detection position, or adjusting the laser emission intensity according to the offset of the laser.

[0076] Specifically, the x direction of the pipe pile is the horizontal axis of the prefabricated pipe pile 1 on the front view plane of the static press 17, and the y direction is another horizontal axis of the prefabricated pipe pile 1 orthogonal to the x direction.

[0077] In practice, the system of the present invention is provided with a verticality detection module, a communication module, a parameter detection component and a control module, and the ranging position and the laser emission intensity are adjusted according to the temperature and humidity of the static press base 16. Since the piling space is located below the static press 17 and close to the ground, the detection accuracy of the laser in the piling space is affected by the environmental humidity and temperature and then deviates, resulting in a decrease in the detection accuracy. By adjusting the ranging position and the laser emission intensity, the laser path is adjusted when the laser deviation is large, thereby improving the accuracy of verticality detection and compensating for the laser deviation caused by environmental factors. Since the humidity in the piling space is prone to rusting of the mechanical structure, by adjusting the horizontality adjustment time, the rust shedding is increased and the interference caused by the rust on the signal transmission is reduced. Since the data line 11 for communication is affected by humidity in a humid environment and the signal transmission is unstable, the moving rate of the position constraint module in the vertical direction is adjusted to ensure the stability of the detection process and avoid communication interruption caused by moisture on the data line 11, thereby improving the detection efficiency and accuracy.

[0078] Specifically, the ranging component includes:

[0079] A first laser rangefinder is arranged on a side of the static press base 16 close to the prefabricated pipe pile 1 along the x direction of the prefabricated pipe pile 1, and is used to detect the horizontal distance between the first laser rangefinder and the side wall of the prefabricated pipe pile 1;

[0080] A second laser rangefinder 6, which is arranged above the first laser rangefinder in the vertical direction, and is used to detect the oblique distance between the second laser rangefinder 6 and the side wall of the prefabricated pipe pile 1;

[0081] A third laser rangefinder 14 is arranged on the side of the static press base 16 close to the prefabricated pipe pile 1 along the y direction of the prefabricated pipe pile 1, and is used to detect the horizontal distance between the third laser rangefinder 14 and the side wall of the prefabricated pipe pile 1;

[0082] The fourth laser rangefinder 10 is arranged above the third laser rangefinder 14 in the vertical direction, and is used to detect the oblique distance between the second laser rangefinder 6 and the side wall of the prefabricated pipe pile 1.

[0083] The acute angle formed between the first laser rangefinder and the second laser rangefinder 6 is 45°, and the acute angle formed between the third laser rangefinder 14 and the fourth laser rangefinder 10 is 45°.

[0084] Specifically, the horizontal distance between the first laser rangefinder and the prefabricated pipe pile 1 is recorded as X1, the oblique distance between the second laser rangefinder 6 and the prefabricated pipe pile 1 is recorded as X2, the horizontal distance between the third laser rangefinder 14 and the prefabricated pipe pile 1 is recorded as Y1, and the oblique distance between the fourth laser rangefinder 10 and the prefabricated pipe pile 1 is recorded as Y2. The calculation process of calculating the verticality, offset azimuth and offset amount of the prefabricated pipe pile 1 by using X1, X2, Y1 and Y2 is an existing technology well known to those skilled in the art and will not be elaborated herein.

[0085] Specifically, the general range of values ​​of the horizontal distance between the first laser rangefinder and the second laser rangefinder 6 and the prefabricated pipe pile 1 is [0.4m, 0.8m], and the preferred embodiment of the horizontal distance between the first laser rangefinder and the second laser rangefinder 6 and the prefabricated pipe pile 1 is 0.5m; the general range of values ​​of the horizontal distance between the third laser rangefinder 14 and the fourth laser rangefinder 10 and the prefabricated pipe pile 1 is [0.4m, 0.8m], and the preferred embodiment of the horizontal distance between the third laser rangefinder 14 and the fourth laser rangefinder 10 and the prefabricated pipe pile 1 is 0.5m.

[0086] In practice, the system of the present invention is provided with a first laser rangefinder, a second laser rangefinder 6, a third laser rangefinder 14 and a fourth laser rangefinder 10, which respectively measure the distance of the prefabricated pipe pile 1 in four directions, thereby reflecting the installation verticality information of the square pipe pile in real time. Each group of laser rangefinders has a high-precision ranging capability, thereby obtaining data such as the verticality, offset azimuth, and offset of the pipe pile. When the offset in a certain direction exceeds the preset range, the communication module will send the obtained result to the display terminal 12 and then issue an offset alarm, thereby ensuring that the verticality of the prefabricated pipe pile 1 meets the requirements and improving the detection accuracy.

[0087] Specifically, the position constraint module includes:

[0088] A first horizontal platform 5, which is arranged below the first laser rangefinder and the second laser rangefinder 6, and is used to fix the positions of the first laser rangefinder and the second laser rangefinder 6;

[0089] A first leg group, which is connected to the first horizontal platform 5 and keeps the first horizontal platform 5 in a horizontal state by adjusting the height in the vertical direction;

[0090] A first level 4, which is arranged on the upper surface of the first horizontal platform 5 and is used to detect the levelness of the first horizontal platform 5;

[0091] A second horizontal platform 9, which is arranged below the third laser rangefinder 14 and the fourth laser rangefinder 10, and is used to fix the positions of the third laser rangefinder 14 and the fourth laser rangefinder 10;

[0092] A second leg group, which is connected to the second horizontal platform 9 and keeps the second horizontal platform 9 in a horizontal state by adjusting the height in the vertical direction;

[0093] A second level 8 is provided on the upper surface of the second horizontal platform 9 to detect the levelness of the second horizontal platform 9.

[0094] The first leg group and the second leg group respectively include four adjustable legs 3 arranged in a rectangular shape.

[0095] Specifically, embodiments of the adjustment methods of the adjustable legs 3 include single-action legs, linked legs, hydraulic legs and pneumatic legs, and the preferred embodiment of the adjustable legs 3 is the pneumatic legs.

[0096] In practice, the system of the present invention is provided with a first horizontal platform 5, a first leg group, a first spirit level 4, a second horizontal platform 9, a second leg group and a second spirit level 8. During the piling process, the prefabricated pipe pile 1 may shake due to uneven ground or uneven soil hardness, thereby affecting the accuracy of verticality detection. The height of the legs is adjusted to keep the laser rangefinder stable on the horizontal plane, thereby reducing the error caused by uneven ground. The spirit level is used to monitor the horizontal state of the horizontal platform in real time. Once a horizontal deviation is detected, it can be compensated by adjusting the height of the leg group to ensure the horizontality of the detection, thereby improving the stability of the detection.

[0097] Specifically, the parameter detection component includes:

[0098] An infrared thermal imaging thermometer 15, which is arranged above the distance measuring component to detect the horizontal temperature of the static press base 16;

[0099] A humidity sensor 13 group, which is arranged on one side of the static press base 16 close to the position constraint module, for detecting the humidity of the static press base 16, wherein the humidity sensor 13 group includes a plurality of humidity sensors 13 arranged at equal intervals on one side of the static press base 16 close to the first leg group along the x direction of the prefabricated pipe pile 1 and a plurality of humidity sensors 13 arranged at equal intervals on one side of the static press base 16 close to the second leg group along the y direction of the prefabricated pipe pile 1;

[0100] A laser interferometer group, which is respectively connected to the first horizontal platform 5 and the second horizontal platform 9, for detecting the offset of the laser, wherein the laser interferometer group includes a first laser interferometer 2 arranged on the first horizontal platform 5 close to the first laser rangefinder along the x-direction of the prefabricated pipe pile 1, and a second laser interferometer 7 arranged on the second horizontal platform 9 close to the third laser rangefinder 14 along the y-direction of the prefabricated pipe pile 1.

[0101] Specifically, the number of humidity sensors 13 arranged in the x direction and the y direction is proportional to the distance between the distance measuring component and the prefabricated pipe pile 1 ; the spacing between the humidity sensors 13 is proportional to the distance between the distance measuring component and the prefabricated pipe pile 1 .

[0102] In practice, the system of the present invention is equipped with an infrared thermal imaging thermometer 15 and a humidity sensor 13. Due to the dark and humid environment in the piling space, the laser path will deviate during the laser detection process, thereby affecting the accuracy of the verticality measurement; the external thermal imaging thermometer and humidity sensor 13 can monitor the temperature and humidity near the static press base 16 in real time to detect the environment of the static press base 16, thereby improving the detection accuracy.

[0103] Specifically, the control module is connected to the infrared thermal imaging thermometer 15 to obtain the temperature of the static press base 16 close to the prefabricated pipe pile 1 and the temperature of the distance measuring component, and calculate the temperature difference. If the temperature difference is greater than the preset difference, it is determined that the deviation degree of the laser does not meet the requirements, and the temperature imaging spectrum of the static press base 16 is obtained.

[0104] If the temperature distribution state in the temperature imaging map in the horizontal direction extending from the clamping opening to the position constraint module is increasing, it is determined that the temperature distribution type is a tree ring type;

[0105] If the temperature distribution state in the direction extending horizontally outward from the center position of the prefabricated pipe pile 1 in the temperature imaging map is from decreasing to increasing, it is determined that the temperature distribution type is funnel-shaped.

[0106] Specifically, the general value range of the preset difference amount is [0.2°C, 0.5°C], and the preferred embodiment of the preset difference amount is 0.4°C.

[0107] In practice, the system of the present invention sets a preset difference amount. Since the laser path is affected by light and temperature, which leads to errors in the intensity of received reflected light or deviation of the laser path, the temperature distribution near the static press base 16 is monitored in real time to generate a temperature imaging map, thereby identifying the temperature distribution type and improving the detection stability.

[0108] Specifically, the control module is connected to the infrared thermal imaging thermometer 15 and the distance measuring component respectively, so as to perform laser distance measurement at a low temperature position where the horizontality meets the requirements when the temperature distribution type is a funnel type;

[0109] When the temperature distribution type is the annual ring type, the offset of the laser is obtained. If the offset is greater than the preset second offset, it is determined that the laser offset range does not meet the requirements, and when the position constraint module adjusts the horizontality, when the adjustable leg 3 close to one side of the prefabricated pipe pile 1 reaches the maximum length, the emission intensity of the laser is increased.

[0110] The emission intensity of the laser is positively correlated with the offset.

[0111] Specifically, the general value range of the preset second offset is [0.16 μm, 0.2 μm], and the general value range of the preset first offset is [0.12 μm, 0.14 μm].

[0112] Preferably, the preferred embodiment of the preset second offset is 0.18 μm, and the preferred embodiment of the preset first offset is 0.13 μm.

[0113] In implementation, when the difference between the preset second offset and the offset is within 0.01μm, the emission intensity of the laser increases by 3mW. When the difference between the preset second offset and the offset exceeds 0.01μm, the emission intensity of the laser increases by 2mW for every 0.01μm exceeded. For example, when the offset is 0.2μm and the emission intensity of the laser is 30mW, the emission intensity of the laser increases to 30mW+3mW+2mW=35mW.

[0114] In practice, the system of the present invention performs laser ranging at a low-temperature position where the horizontality meets the requirements to reduce the laser path deviation caused by temperature changes. In a low-temperature environment, the propagation path of the laser is relatively stable and is not easily disturbed by factors such as air refraction. Therefore, ranging is performed at such a position to improve the detection accuracy. By setting a preset first offset, the mist generated by humidity at various positions in the piling space is unevenly distributed due to different temperatures, thereby increasing the degree of deviation caused by laser scattering. By increasing the laser emission intensity, it is ensured that the laser can accurately irradiate the surface of the prefabricated pipe pile 1, thereby improving the accuracy of verticality detection.

[0115] Specifically, the control module is connected to the communication module and the position constraint module respectively, and is used to preliminarily determine that the degree of signal interference by corrosion does not meet the requirements when the offset is greater than or equal to the preset first offset and less than or equal to the preset second offset, and obtain the signal delay time of the verticality;

[0116] If the signal delay time is longer than the preset second delay time, the second determination is made that the signal is not interfered by corrosion to the extent required, and the horizontal adjustment time of the position constraint module before detection is increased.

[0117] The horizontal adjustment duration is positively correlated with the signal delay duration.

[0118] Specifically, the offset of the laser is the straight-line distance between the actual wavefront of the laser and the ideal wavefront.

[0119] Specifically, the general value range of the preset second delay time length is [2.6ns, 2.8ns], and the general value range of the preset first delay time length is [2ns, 2.2ns].

[0120] Preferably, the preferred embodiment of the preset second delay time length is 2.7 ns, and the preferred embodiment of the preset first delay time length is 2.1 ns.

[0121] In implementation, when the difference between the signal delay time and the preset second delay time is within 0.1ns, the horizontality adjustment time is increased by 4s. When the difference between the signal delay time and the preset second delay time exceeds 0.1ns, the horizontality adjustment time is increased by 2s for every 0.1ns exceeding the time. For example, if the signal delay time is 3ns and the current horizontality adjustment time is 12s, the horizontality adjustment time is adjusted to 12s+4s+2s+2s=20s.

[0122] In implementation, the system of the present invention sets a preset second delay time. Since the mechanical device in the piling space is subject to a high degree of corrosion due to moisture, which increases the interference with signal transmission, the mechanical device is given more time to adapt to and adjust the signal transmission interference caused by rust by increasing the horizontality adjustment time of the position constraint module. In addition, the rust on the mechanical mechanism is shaken off during the horizontality adjustment process, ensuring stable transmission of the signal during the detection process, thereby improving the stability of verticality detection.

[0123] Specifically, the control module is connected to the communication module and the position constraint module respectively, and is used to preliminarily determine that the interference degree of humidity on the signal does not meet the requirements when the signal delay time is greater than or equal to the preset first delay time and less than or equal to the preset second delay time, and obtain the vertical signal interruption frequency and the humidity of the static press base 16 to calculate the linear fit between the signal interruption frequency and the humidity;

[0124] If the linear fit is less than the preset linear fit, it is determined that the interference degree of moisture on the signal does not meet the requirement, and the moving speed of the position constraint module in the vertical direction is increased.

[0125] Specifically, the moving speed is positively correlated with the linear fit.

[0126] Specifically, the linear fit of the verticality signal interruption frequency and the humidity of the static press base 16 is R2 Value, R 2 The value calculation process is well known to those skilled in the art, so it will not be described in detail here.

[0127] Specifically, the general value range of the preset linear fit is [0.62, 0.68], and the preferred embodiment of the preset linear fit is 0.64.

[0128] In implementation, when the difference between the preset linear fit and the linear fit is within 0.01, the moving speed of the position constraint module in the vertical direction increases by 0.02 m / s. When the difference between the preset linear fit and the linear fit exceeds 0.01, the moving speed increases by 0.01 m / s for every 0.01 increase. For example, when the linear fit is 0.6 and the current moving speed is 0.1 m / s, the moving speed of the position constraint module in the vertical direction increases to 0.1 m / s + 0.02 m / s + 0.01 m / s × 3 = 0.15 m / s.

[0129] In implementation, the system of the present invention sets a preset linear fit. Since the data line 11 for signal transmission is in a humid environment on the ground, the data line 11 has poor contact, which increases the signal transmission interruption situation and affects the continuity of detection. The linear fit between the signal interruption frequency and the humidity of the static press base 16 is calculated to evaluate the degree to which the data line 11 is affected by moisture. When the linear fit is lower than the preset value, it means that the data line 11 is seriously affected by moisture. At this time, by increasing the moving rate of the position constraint module in the vertical direction and increasing the swing of the data line 11, the moisture degree of the data line 11 is reduced, and the signal interruption caused by the data line 11 contacting moisture is reduced, thereby achieving an increase in the continuity and stability of the verticality detection.

[0130] The present invention also provides an embodiment of a method for detecting the verticality of a prefabricated pipe pile based on a static press, comprising:

[0131] adjusting the moving speed of the position constraint module in the vertical direction according to the linear fit between the verticality signal interruption frequency and the humidity at the laser emission position;

[0132] Controlling the position constraint module to move in a vertical direction according to the moving speed before detection;

[0133] Obtain the temperature in the horizontal direction of the laser emission position and determine the temperature distribution type;

[0134] Determining a laser adjustment method according to the temperature distribution type, including adjusting a laser detection position and adjusting a laser emission intensity;

[0135] Adjust the horizontal adjustment time according to the vertical signal delay time;

[0136] Controlling the position constraint module to adjust the horizontality according to the horizontality adjustment duration;

[0137] According to the laser adjustment method, laser is emitted to the prefabricated pipe pile to detect the verticality of the prefabricated pipe pile.

[0138] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A prefabricated pipe pile verticality detection system based on a static press, characterized in that: include: A verticality detection module detects the verticality information of the prefabricated pipe pile by emitting laser lines, including a distance measuring component for emitting lasers in the x-direction and y-direction of the prefabricated pipe pile to obtain verticality information and a parameter detection component for detecting the temperature and humidity of the static press base and the offset of the laser; A position constraint module, connected to the verticality detection module, for constraining the horizontal position of the distance measuring component; A communication module, connected to the verticality detection module, for transmitting the verticality information to a display terminal; A control module, which is respectively connected to the verticality detection module, the communication module and the position constraint module, is used to determine whether the deviation degree of the laser meets the requirements according to the temperature difference between the static press base and the clamping opening, and when it does not meet the requirements, determine the adjustment mode of the distance measuring component according to the temperature distribution type in the horizontal direction of the static press base, Or, adjusting the horizontal adjustment time according to the vertical signal delay time, Or, adjusting the moving speed of the position constraint module in the vertical direction according to the linear fit between the verticality signal interruption frequency and the humidity of the static press base, The adjustment method of the distance measuring component includes adjusting the laser detection position, or adjusting the laser emission intensity according to the offset of the laser.

2. The prefabricated pipe pile verticality detection system based on static press according to claim 1 is characterized in that: The ranging component comprises: A first laser rangefinder is arranged on a side of the static press base close to the prefabricated pipe pile along the x direction of the prefabricated pipe pile, and is used to detect the horizontal distance between the first laser rangefinder and the side wall of the prefabricated pipe pile; A second laser rangefinder, which is arranged above the first laser rangefinder in a vertical direction, and is used to detect the oblique distance between the second laser rangefinder and the side wall of the prefabricated pipe pile; A third laser rangefinder is arranged on the side of the static press base close to the prefabricated pipe pile along the y direction of the prefabricated pipe pile, and is used to detect the horizontal distance between the third laser rangefinder and the side wall of the prefabricated pipe pile; a fourth laser rangefinder, which is arranged above the third laser rangefinder in the vertical direction, and is used to detect the oblique distance between the second laser rangefinder and the side wall of the prefabricated pipe pile, Among them, the acute angle formed between the first laser rangefinder and the second laser rangefinder is 45°, and the acute angle formed between the third laser rangefinder and the fourth laser rangefinder is 45°.

3. The prefabricated pipe pile verticality detection system based on static press according to claim 2 is characterized in that: The position constraint module comprises: A first horizontal platform, which is arranged below the first laser rangefinder and the second laser rangefinder, and is used to fix the positions of the first laser rangefinder and the second laser rangefinder; A first leg group, which is connected to the first horizontal platform and keeps the first horizontal platform in a horizontal state by adjusting the height in the vertical direction; A first level, which is arranged on the upper surface of the first horizontal platform and is used to detect the levelness of the first horizontal platform; A second horizontal platform is arranged below the third laser rangefinder and the fourth laser rangefinder, and is used to fix the positions of the third laser rangefinder and the fourth laser rangefinder; A second leg group, connected to the second horizontal platform, and adjusting the height in the vertical direction to keep the second horizontal platform in a horizontal state; A second level, which is arranged on the upper surface of the second horizontal platform and is used to detect the levelness of the second horizontal platform, Wherein, the first leg group and the second leg group respectively include four adjustable legs arranged in a rectangular shape.

4. The prefabricated pipe pile verticality detection system based on static press according to claim 3 is characterized in that: The parameter detection component comprises: An infrared thermal imaging thermometer, which is arranged above the distance measuring component and is used to detect the horizontal temperature of the static press base; A humidity sensor group, which is arranged on one side of the static press base close to the position constraint module, for detecting the humidity of the static press base, wherein the humidity sensor group includes a plurality of humidity sensors arranged at equal intervals on one side of the static press base close to the first leg group along the x direction of the prefabricated pipe pile and a plurality of humidity sensors arranged at equal intervals on one side of the static press base close to the second leg group along the y direction of the prefabricated pipe pile; A laser interferometer group, which is respectively connected to the first horizontal platform and the second horizontal platform, for detecting the offset of the laser, wherein the laser interferometer group includes a first laser interferometer arranged on the first horizontal platform close to the first laser rangefinder along the x direction of the prefabricated pipe pile, and a second laser interferometer arranged on the second horizontal platform close to the third laser rangefinder along the y direction of the prefabricated pipe pile.

5. The prefabricated pipe pile verticality detection system based on static press according to claim 4 is characterized in that: The control module is connected to the infrared thermal imaging thermometer to obtain the temperature of the static press base near the prefabricated pipe pile and the temperature of the distance measuring component, and calculate the temperature difference. If the temperature difference is greater than the preset difference, it is determined that the deviation degree of the laser does not meet the requirements, and the temperature imaging spectrum of the static press base is obtained. If the temperature distribution state in the temperature imaging map in the horizontal direction extending from the clamping opening to the position constraint module is increasing, it is determined that the temperature distribution type is a tree ring type; If the temperature distribution state in the direction extending horizontally outward from the center position of the prefabricated pipe pile in the temperature imaging map is from decreasing to increasing, it is determined that the temperature distribution type is funnel-shaped.

6. The prefabricated pipe pile verticality detection system based on static press according to claim 5 is characterized in that: The control module is connected to the infrared thermal imaging thermometer and the distance measuring component respectively, and is used to perform laser distance measurement at a low temperature position where the horizontality meets the requirements when the temperature distribution type is a funnel type; When the temperature distribution type is the annual ring type, the offset of the laser is obtained. If the offset is greater than the preset second offset, it is determined that the laser offset range does not meet the requirements, and when the position constraint module adjusts the horizontality, when the adjustable leg close to one side of the prefabricated pipe pile reaches the maximum length, the emission intensity of the laser is increased. The emission intensity of the laser is positively correlated with the offset.

7. The prefabricated pipe pile verticality detection system based on static press according to claim 6 is characterized in that: The control module is connected to the communication module and the position constraint module respectively, and is used to preliminarily determine that the degree of signal interference by corrosion does not meet the requirements when the offset is greater than or equal to a preset first offset and less than or equal to a preset second offset, and obtain the signal delay time of the verticality; If the signal delay time is longer than the preset second delay time, the second determination is made that the signal is not interfered by corrosion to the extent required, and the horizontal adjustment time of the position constraint module before detection is increased. The horizontal adjustment duration is positively correlated with the signal delay duration.

8. The prefabricated pipe pile verticality detection system based on static press according to claim 7 is characterized in that: The control module is connected to the communication module and the position constraint module respectively, and is used to preliminarily determine that the interference degree of humidity on the signal does not meet the requirements when the signal delay time is greater than or equal to the preset first delay time and less than or equal to the preset second delay time, and obtain the verticality signal interruption frequency and the humidity of the static press base to calculate the linear fit between the signal interruption frequency and the humidity; If the linear fit is less than the preset linear fit, it is determined that the interference degree of moisture on the signal does not meet the requirement, and the moving speed of the position constraint module in the vertical direction is increased.

9. The prefabricated pipe pile verticality detection system based on static press according to claim 8 is characterized in that: The movement rate is positively correlated with the linear fit.

10. A detection method for the prefabricated pipe pile verticality detection system based on a static press according to any one of claims 1 to 9, characterized in that: include: adjusting the moving speed of the position constraint module in the vertical direction according to the linear fit between the verticality signal interruption frequency and the humidity at the laser emission position; Controlling the position constraint module to move in a vertical direction according to the moving speed before detection; Obtain the temperature in the horizontal direction of the laser emission position and determine the temperature distribution type; Determining a laser adjustment method according to the temperature distribution type, including adjusting a laser detection position and adjusting a laser emission intensity; Adjust the horizontal adjustment time according to the vertical signal delay time; Controlling the position constraint module to adjust the horizontality according to the horizontality adjustment duration; According to the laser adjustment method, laser is emitted to the prefabricated pipe pile to detect the verticality of the prefabricated pipe pile.

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