CN116892910B - Detection system and method for pile foundation top surface inclination - Google Patents
Detection system and method for pile foundation top surface inclination Download PDFInfo
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- CN116892910B CN116892910B CN202310827157.0A CN202310827157A CN116892910B CN 116892910 B CN116892910 B CN 116892910B CN 202310827157 A CN202310827157 A CN 202310827157A CN 116892910 B CN116892910 B CN 116892910B
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- 238000005096 rolling process Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
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- 244000208734 Pisonia aculeata Species 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 5
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- 238000010276 construction Methods 0.000 description 2
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- 239000002689 soil Substances 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
- G01C15/008—Active optical surveying means combined with inclination sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a detection system and a detection method for pile foundation top surface inclination, which relate to the field of pile foundation top surface inclination and comprise an equipment bracket, a laser ranging instrument arranged at the top of the equipment bracket, data acquisition control equipment arranged on a bracket at the upper part of the equipment bracket and a plumb calibration device; the data acquisition control equipment is internally provided with a data acquisition device, a data analyzer and a circuit module; according to the invention, by using the cooperation of the laser ranging instrument and the plumb calibration device, the detection operation of pile foundation top surface inclination of all pile foundations one by one in the coverage area of the area can be performed, so that the efficiency of detecting the pile foundation top surface inclination is greatly improved; the operation of repeatedly assembling and disassembling equipment is effectively reduced, and the aim of improving the detection efficiency is fulfilled; the method solves the problems of complicated detection of pile top surface inclination and consumption of a large amount of manpower and material resources in the past, thereby improving the detection efficiency.
Description
Technical Field
The invention relates to the field of pile foundation top surface inclination, in particular to a system and a method for detecting pile foundation top surface inclination.
Background
Along with the rising and vigorous development of the prefabricated industrialization in China, the construction conditions of prefabricated components are more and more, and when prefabricated components such as prefabricated pipe piles are constructed, the prefabricated pipe piles are inclined to different degrees in the process of being pressed into soil layers due to inaccurate geological survey data, uneven sites, lower pile pressing mechanical precision, larger hard pebbles contained in stratum and the like. If the gradient of the pipe pile is too large, the bearing capacity of the pile foundation is seriously affected, the soil retaining effect of the fender pile cannot be effectively exerted, the difficulty is brought to the high-precision assembly work of the follow-up prefabricated parts of the foundation pit, and the construction progress of the foundation pit is restricted;
Chinese patent publication No. CN102425192a discloses a real-time monitoring and early warning system for pile foundation inclination, which is to install an inclinometry sensor and a gyroscope sensor on the pile foundation, drive the pile foundation into the ground at the same time, and output signals of the sensors through wires, so as to achieve real-time monitoring for pile foundation inclination.
The technology has higher test cost, and the device lead wire can be damaged in the process of driving the precast pile or is difficult in the process of later installation of the cast-in-place pile; the biggest defect is that the accuracy of the test cannot be ensured when the inner wall of the tubular pile is not smooth or uneven; moreover, the device can only detect the inclination of one pile foundation, and the detection device can not detect all pile foundations in the area range; therefore, the application provides a detection system capable of acquiring and analyzing the top surface inclination data of the pile foundation in the area through the cooperation of the laser detection equipment and the plumb calibration device.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a detection system for the inclination of the top surface of a pile foundation.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a detection system for pile foundation top surface inclination comprises an equipment bracket, a laser ranging instrument arranged at the top of the equipment bracket, data acquisition control equipment arranged on a bracket at the upper part of the equipment bracket and a plumb calibration device; the data acquisition control equipment is internally provided with a data acquisition device, a data analyzer and a circuit module; the signal receiving end of the data acquisition device is electrically connected with the signal output end of the laser ranging instrument, the pile foundation initial detection parameter is set in the data analyzer, and the signal output end of the data acquisition device is electrically connected with the signal receiving end of the data analyzer; the circuit module is used for supplying power to the laser ranging instrument, the data acquisition unit and the data analysis unit; the plumb calibrating device comprises a plumb strut, a containing cavity formed in the plumb strut, a lifting column vertically movably arranged in the containing cavity and a deflection plate rotatably arranged at the top end of the lifting column, wherein an adjusting plate is arranged at the outer end of the deflection plate, a rotating disc is rotatably embedded at the outer end of the bottom of the adjusting plate, a plumb line is arranged at the bottom of the rotating disc, a pair of targets are arranged on the plumb line, and a positioning assembly is arranged on the back of each target; a lifting assembly for adjusting the height of the lifting column is arranged in the accommodating cavity of the vertical column; a transverse moving cavity is formed in the deflection plate, and a transverse moving mechanism for horizontally moving the adjusting plate is arranged in the transverse moving cavity; the adjusting plate is internally provided with a transmission cavity, and a transmission mechanism for rotating the rotating disc is arranged in the transmission cavity.
Preferably, the lifting assembly comprises a screw rod vertically and rotatably arranged on the inner bottom surface of the storage cavity and a first motor arranged in the vertical support column below the storage cavity, the bottom end of the screw rod is coaxially and fixedly connected with a driving shaft of the first motor, the storage cavity is a rectangular cavity, and a rectangular limiting frame is sleeved at the bottom of the outer wall of the lifting column; the bottom surface of the lifting column is vertically provided with a threaded hole channel matched with the screw rod, and the rod body of the screw rod is connected in the threaded hole channel.
Preferably, a mounting groove is formed in the top end surface of the lifting column, a second motor is arranged in the mounting groove, a connecting shaft is vertically fixedly connected to the bottom surface of the deflection plate, and the bottom end of the connecting shaft is coaxially fixedly connected with a driving shaft of the second motor; and a battery box is arranged at one side of the bottom of the vertical support column, and a storage battery is arranged in the battery box.
Preferably, the transverse moving mechanism comprises a connecting plate transversely movably arranged in the transverse moving cavity, a screw rod transversely rotatably arranged in the transverse moving cavity and a third motor arranged in the deflection plate at the outer side of the transverse moving cavity, wherein the outer end of the connecting plate movably penetrates out of the transverse moving cavity and is fixedly connected with one end face of the adjusting plate, through holes are transversely formed in four corners of one end face of the connecting plate, transmission rods are movably penetrated in the two through holes above one end face of the connecting plate, guide rods are movably penetrated in the two through holes below one end face of the connecting plate, the length of a rod body of the transmission rods is longer than that of the guide rods, one ends of the transmission rods and the guide rods movably penetrate into the transmission cavity, and the transmission rods extend to one side of the inside of the transmission cavity; the other ends of the transmission rod and the guide rod are fixedly connected with the inside of the transverse moving cavity; the driving shaft of the third motor is fixedly connected with the screw rod in the coaxial direction; the inner end face of the connecting plate is provided with a thread groove matched with the screw rod.
Preferably, the transmission mechanism comprises a rotating shaft, a driven belt wheel, a transmission shaft, a transmission gear and a bearing plate, wherein the rotating shaft is arranged on the inner bottom surface of a transmission cavity in a rotating manner, the driven belt wheel is fixedly sleeved on the rotating shaft, the transmission shaft is longitudinally arranged on the inner wall of the rear end of the transmission cavity, which is close to the deflection plate, the transmission gear is fixedly sleeved on the front end shaft and the rear end shaft of the transmission shaft, the bearing plate is fixedly connected on the inner wall of one side of the transmission cavity, the top surface of the bearing plate is vertically provided with a driven shaft, the top end of the driven shaft is fixedly connected with driven bevel teeth, the transmission shaft is fixedly sleeved with driving bevel teeth engaged with the driven bevel teeth, the bottom of a rod body of the transmission rod, which is positioned in the transmission cavity, is transversely provided with a transmission groove, and one side of the inner top surface of the transmission groove is provided with a rack for rotating the transmission gear; the upper shaft body of the driven shaft is fixedly sleeved with a driving belt wheel, and a driving belt is sleeved between the driving belt wheel and the driven belt wheel.
Preferably, the positioning component comprises a circular groove arranged on the back surface of the target, a fixing seat longitudinally fixedly connected to the middle part of the circular groove, clamping plates movably arranged on two sides of the fixing seat, a mounting cavity arranged in the upper end and the lower end of the fixing seat, a pull back rod transversely movably arranged on two sides of the mounting cavity and an anti-drop plate fixedly connected to the inner end of the pull back rod, wherein the outer end of the pull back rod movably penetrates out of the mounting cavity and is fixedly connected with the rear end of the inner side surface of the clamping plate, and damping pads are arranged on the inner wall of the clamping plate and the outer ring wall of the fixing seat; and a return spring is movably sleeved on the rod body of the pull rod in the mounting cavity.
Preferably, the clamping plates are of an arched plate body structure, and the fixing base is of an elliptic block structure; threading holes for the plumb line to pass through are formed in the two sides of the inner top surface and the two sides of the inner bottom surface of the circular groove.
Preferably, a winding cavity is formed in the rotating disc, a fixed plate is arranged at the opening of the bottom of the winding cavity, a winding device is arranged at the top of the fixed plate, fixed pipes are vertically communicated with two sides of the bottom surface of the rotating disc, a connecting rope is vertically fixedly connected to a sealing surface at the bottom of the fixed pipes, a vertically arranged connecting screw pipe is fixedly connected to the bottom end of the connecting rope, external screw barrels are rotationally connected to two ends of the plumb line, and two ends of the plumb line are respectively connected with the connecting screw pipe in a screwing mode through the external screw barrels; the plumb line is hollow with the connecting rope, just inside wears to be equipped with wire rope of plumb line, wire rope's tip all extends into the rolling intracavity portion through the fixed pipe, wire rope's one end is connected in the rolling barrel bottom of rolling ware, and wire rope's the other end is connected at the rolling barrel top of rolling ware.
The invention also provides a use method of the detection system for the inclination of the top surface of the pile foundation, which comprises the following steps:
S1, firstly placing an equipment bracket on one side of a foundation pile to be detected, installing a laser ranging instrument on the equipment bracket, and starting a circuit module to supply power to the laser ranging instrument, a data acquisition unit and a data analysis unit; then placing the plumb calibrating device on the other side of the pile foundation to be measured, and enabling the plumb calibrating device to be fixedly erected on the ground;
S2, a first motor in the lifting assembly is started to drive a screw rod to rotate, lifting and adjusting functions are achieved on the lifting column under the action of rotation of the screw rod, after the lifting column is lifted, a second motor is started to adjust the deflection direction of the deflection plate according to the position of the laser ranging instrument, and after one end of the deflection plate is adjusted to point to the laser ranging instrument, the adjustment plate, a plumb line arranged at the bottom of the adjustment plate and a pair of targets face the laser ranging instrument;
s3, in order to meet the precision of the orientation position of the target and the small-amplitude adjustment of the distance between the target and the pile foundation, a third motor in the traversing mechanism is started to drive a screw rod to rotate, a connecting plate can be moved out of a traversing cavity through the rotation of the screw rod, and then the adjusting plate is pushed to be far away from the deflection plate, so that the small-amplitude adjustment of the distance between the target and the pile foundation is realized under the action of the traversing mechanism;
S4, before the adjustment of the distance between the target and the pile foundation is finished, the transverse moving mechanism is started to carry out small-amplitude transverse moving operation on the adjusting plate, and then under the action of the transmission rod, the transmission mechanism can be driven to carry out horizontal rotation adjustment on a rotating disc connected with the rotating shaft, when the rotating disc is horizontally rotated and adjusted, the target mounted on the plumb line can be precisely adjusted in the direction, the situation that the target is inclined and deviated due to centrifugal force during integral rotation adjustment can be avoided, the shaking amplitude of the target on the plumb line is reduced, and the laser ranging instrument can be conveniently and rapidly calibrated with the target after adjustment and stabilization;
S5, when the adjusting plate is moved and adjusted, the winders are synchronously started, when the winders are started, the steel wire rope in the plumb line can be wound and tightened, so that the plumb line is also in a tightened state, the condition that two targets swing greatly when the adjusting plate moves greatly can be avoided after the plumb line is tightened, and collision between the lowest target and the lifting column can be avoided;
S6, after the adjustment of the direction of the target is finished, observing and data acquisition of an inclination angle are carried out on the central axis position of the top surface of the pile foundation to be measured by starting a laser distance measuring instrument, data measured by the laser distance measuring instrument are transmitted to a data analyzer by the data acquisition device, then the measured central axis data of the pile foundation and initial detection parameters of the pile foundation are analyzed and processed, so that offset data of the axis of the pile foundation can be obtained, and further the inclination angle data of the measured pile foundation can be obtained;
and S7, after the detection of the pile foundation is finished, retracting each instrument and equipment to finish the test operation.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, by using the cooperation of the laser ranging instrument and the plumb calibration device, the detection operation of pile foundation top surface inclination of all pile foundations one by one in the coverage area of the area can be performed, so that the efficiency of detecting the pile foundation top surface inclination is greatly improved; the operation of repeatedly assembling and disassembling equipment is effectively reduced, and the aim of improving the detection efficiency is fulfilled; the method solves the problems of complicated detection of pile top surface inclination and consumption of a large amount of manpower and material resources in the past, thereby improving the detection efficiency. Thereby achieving the effects of accurate detection data, simple installation and convenient maintenance;
According to the invention, under the cooperation of the transmission mechanism and the transverse moving mechanism, the distance and the direction between the two calibration targets and different pile foundations can be accurately adjusted; the height and deflection angle of the target can be adjusted, the operation difficulty when the laser ranging instrument is calibrated is greatly reduced, and the height and the direction of the target and the distance between the target and a pile foundation can be adjusted in a long distance; the convenience and the accuracy of detection data when detecting pile foundation top inclination are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of a pile foundation detection state structure according to the present invention;
FIG. 2 is a schematic perspective view of a plumb bob calibrating device according to the present invention;
FIG. 3 is a front view in cross section of the plumb bob calibration assembly of the present invention;
FIG. 4 is a schematic perspective view of a laser ranging apparatus and a data acquisition control device according to the present invention;
FIG. 5 is a cross-sectional view of the front view of the deflector plate and the regulator plate of the present invention;
FIG. 6 is a schematic view of the plumb line tensioning configuration of the present invention;
fig. 7 is a cross-sectional view of a target backside mount of the present invention.
Number in the figure: 1. an equipment rack; 2. a laser ranging instrument; 3. a vertical pillar; 4. lifting columns; 5. a deflector plate; 6. an adjusting plate; 7. plumb lines; 8. a target; 9. a control device; 10. a connecting plate; 11. a first motor; 12. a rotating disc; 13. a screw rod; 14. a second motor; 15. a third motor; 16. a screw; 17. a fixed tube; 18. connecting a spiral tube; 19. a connecting rope; 20. a winder; 21. a wire rope; 22. a rotating shaft; 23. a transmission rod; 24. a driven shaft; 25. a transmission gear; 26. active bevel teeth; 27. a rack; 28. a fixing seat; 29. a clamping plate; 30. a pull-back rod; 31. a return spring; 32. damping pad.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Examples: referring to fig. 1-7, a detection system for pile foundation top surface inclination comprises an equipment bracket 1, a laser ranging instrument 2 arranged at the top of the equipment bracket 1, a data acquisition control device 9 arranged on a bracket at the upper part of the equipment bracket 1 and a plumb calibration device; the data acquisition control equipment 9 is internally provided with a data acquisition device, a data analyzer and a circuit module; the signal receiving end of the data acquisition device is electrically connected with the signal output end of the laser ranging instrument 2, the pile foundation initial detection parameters are set in the data analyzer, and the signal output end of the data acquisition device is electrically connected with the signal receiving end of the data analyzer; the circuit module is used for supplying power to the laser ranging instrument 2 and the data collector and the data analyzer; the plumb calibrating device comprises a plumb post 3, a containing cavity formed in the plumb post 3, a lifting post 4 vertically movably arranged in the containing cavity, and a deflection plate 5 rotatably arranged at the top end of the lifting post 4, wherein a plurality of fixed inserting rods are equidistantly arranged on a bottom plate of the plumb post 3, the plumb post 3 is conveniently fixed, an adjusting plate 6 is arranged at the outer end of the deflection plate 5, a rotating disc 12 is rotatably embedded at the outer end of the bottom of the adjusting plate 6, a plumb line 7 is arranged at the bottom of the rotating disc 12, a pair of targets 8 are arranged on the plumb line 7, and a positioning assembly is arranged at the back surface of each target 8; a lifting component for adjusting the height of the lifting column 4 is arranged in the accommodating cavity of the vertical support column 3; a transverse moving cavity is formed in the deflection plate 5, and a transverse moving mechanism for horizontally moving the adjusting plate 6 is arranged in the transverse moving cavity; a transmission cavity is formed in the adjusting plate 6, and a transmission mechanism for rotating the rotating disc 12 is arranged in the transmission cavity; under the cooperation of the transmission mechanism and the transverse moving mechanism, the distance and the direction between the two calibration targets 8 and different pile foundations can be accurately adjusted; the height and deflection angle of the target 8 can be adjusted, the operation difficulty when the laser ranging instrument 2 is calibrated is greatly reduced, and the height and the direction of the target 8 and the distance between the target 8 and a pile foundation can be adjusted in a long distance; the convenience and the accuracy of detection data when detecting pile foundation top inclination are improved.
In the invention, the lifting assembly comprises a screw rod 13 vertically and rotatably arranged on the inner bottom surface of a storage cavity and a first motor 11 arranged in a vertical strut 3 below the storage cavity, the bottom end of the screw rod 13 is coaxially and fixedly connected with a driving shaft of the first motor 11, the storage cavity is a rectangular cavity, and the bottom of the outer wall of the lifting column 4 is sleeved with a rectangular limit frame; the bottom surface of the lifting column 4 is vertically provided with a threaded hole channel matched with the screw rod 13, and the rod body of the screw rod 13 is connected in the threaded hole channel; the top end surface of the lifting column 4 is provided with a mounting groove, a second motor 14 is arranged in the mounting groove, the bottom surface of the deflection plate 5 is vertically fixedly connected with a connecting shaft, and the bottom end of the connecting shaft is coaxially fixedly connected with a driving shaft of the second motor 14; a battery box is arranged at one side of the bottom of the vertical support column 3, and a storage battery is arranged in the battery box; the height to regulating plate 6 and deflector 5 is convenient for go up and down to adjust, and then highly play the effect that can carry out adaptability to the top surface height of mark target 8 according to different pile foundations.
In the invention, the transverse moving mechanism comprises a connecting plate 10 transversely movably arranged in a transverse moving cavity, a screw rod 16 transversely rotatably arranged in the transverse moving cavity and a third motor 15 arranged in a deflection plate 5 outside the transverse moving cavity, wherein the outer end of the connecting plate 10 movably penetrates out of the transverse moving cavity and is fixedly connected with one end face of an adjusting plate 6, through holes are transversely formed in four corners of one end face of the connecting plate 10, a transmission rod 23 movably penetrates through the two through holes above one end face of the connecting plate 10, guide rods movably penetrate through the two through holes below one end face of the connecting plate 10, the length of a rod body of the transmission rod 23 is longer than that of the guide rod, one ends of the transmission rod 23 and the guide rods movably penetrate into the transmission cavity, and the transmission rod 23 extends to one side of the inside of the transmission cavity; the other ends of the transmission rod 23 and the guide rod are fixedly connected with the inside of the transverse moving cavity; the driving shaft of the third motor 15 is fixedly connected with the screw 16 in the coaxial direction; the inner end surface of the connecting plate 10 is provided with a thread groove matched with the screw 16; not only can the adjusting plate 6 be moved and adjusted through the sideslip mechanism, but also the effect of adjusting is rotated to the rotor disc 12 in the transmission in-process, can make the target 8 rotate to weaken the swing range that the adjusting plate 6 appears when sideslip target 8.
In the invention, the transmission mechanism comprises a rotating shaft 22 which is rotationally arranged on the inner bottom surface of a transmission cavity, a driven belt pulley which is fixedly sleeved on the rotating shaft 22, a transmission shaft which is longitudinally rotationally arranged on the inner wall of one side of the transmission cavity close to the deflection plate 5, a transmission gear 25 which is fixedly sleeved on the front end shaft and the rear end shaft of the transmission shaft, and a bearing plate which is fixedly connected on the inner wall of one side of the transmission cavity, wherein the top surface of the bearing plate is vertically rotationally provided with a driven shaft 24, the top end of the driven shaft 24 is fixedly connected with driven bevel gears, the transmission shaft is fixedly sleeved with driving bevel gears 26 which are meshed with the driven bevel gears, the bottom of a rod body of the transmission rod 23 positioned in the transmission cavity is transversely provided with a transmission groove, and one side of the inner top surface of the transmission groove is provided with a rack 27 for the rotation of the transmission gear 25; a driving belt pulley is fixedly sleeved on the upper shaft body of the driven shaft 24, and a driving belt is sleeved between the driving belt pulley and the driven belt pulley; through the extension and retraction of the transmission rod 23 in the transmission cavity, the direction of the target 8 can be precisely adjusted through the cooperation of the transmission mechanism.
In the invention, the positioning assembly comprises a circular groove arranged on the back of a target 8, a fixed seat 28 longitudinally fixedly connected in the middle of the circular groove, clamping plates 29 movably arranged on two sides of the fixed seat 28, a mounting cavity arranged in the upper end and the lower end of the fixed seat 28, a pull-back rod 30 transversely movably arranged on two sides of the inside of the mounting cavity and an anti-drop plate fixedly connected at the inner end of the pull-back rod 30, wherein the outer end of the pull-back rod 30 movably penetrates out of the mounting cavity and is fixedly connected with the rear end of the inner side surface of the clamping plate 29, and damping pads 32 are arranged on the inner wall of the clamping plate 29 and the outer ring wall of the fixed seat 28; a return spring 31 is movably sleeved on the rod body of the pull rod 30 positioned in the mounting cavity; the clamping plates 29 are of an arched plate body structure, and the fixing seats 28 are of an elliptic block structure; threading holes for the plumb line 7 to pass through are formed in both sides of the inner top surface and both sides of the inner bottom surface of the circular groove; through the arrangement of the positioning component, the two targets 8 can be quickly and firmly arranged on the plumb line 7, and the distance between the two targets 8 after being arranged can be adjusted; meanwhile, the plumb line 7 passes through the targets 8 to form a U shape, so that the anti-falling effect of the targets 8 after installation can be further improved.
In the invention, a winding cavity is formed in the rotating disc 12, a fixed plate is arranged at the opening at the bottom of the winding cavity, a winder 20 is arranged at the top of the fixed plate, two sides of the bottom surface of the rotating disc 12 are vertically communicated with a fixed pipe 17, a connecting rope 19 is vertically fixedly connected to a sealing surface at the bottom of the fixed pipe 17, a vertically arranged connecting screw 18 is fixedly connected to the bottom end of the connecting rope 19, external screw barrels are rotationally connected to two ends of a plumb line 7, and two ends of the plumb line 7 are respectively in screwing connection with the connecting screw 18 through the external screw barrels; the plumb line 7 and the connecting rope 19 are hollow, a steel wire rope 21 is penetrated in the plumb line 7, the steel wire rope 21 is of a flexible rope body structure, the end parts of the steel wire rope 21 extend into the winding cavity through the fixed pipe 17, one end of the steel wire rope 21 is connected to the bottom of the winding cylinder of the winding device 20, and the other end of the steel wire rope 21 is connected to the top of the winding cylinder of the winding device 20; under the effect of the winder 20 and the steel wire rope 21, when the traversing mechanism and the transmission mechanism adjust the target 8, the plumb line 7 and the connecting rope 19 are tightly stretched, and the condition that the target 8 shakes greatly in the moving process is avoided.
Working principle: in this embodiment, the present invention further provides a method for using a system for detecting a pile foundation top surface inclination, including the following steps:
Firstly, placing an equipment bracket 1 on one side of a foundation pile to be measured, installing a laser ranging instrument 2 on the equipment bracket 1, and starting a circuit module to supply power to the laser ranging instrument 2 and a data collector and a data analyzer; then placing the plumb calibrating device on the other side of the pile foundation to be measured, and enabling the plumb calibrating device to be fixedly erected on the ground;
Secondly, a first motor 11 in the lifting assembly is started to drive a screw rod 13 to rotate, lifting and adjusting functions are achieved on the lifting column 4 under the action of rotation of the screw rod 13, after the lifting column 4 is lifted, a second motor 14 is started to adjust the deflection direction of the deflection plate 5 according to the position of the laser distance measuring instrument 2, and after one end of the deflection plate 5 is adjusted to point to the laser distance measuring instrument 2, at the moment, the adjustment plate 6, a plumb line 7 arranged at the bottom of the adjustment plate and a pair of targets 8 face the laser distance measuring instrument 2;
Step three, in order to meet the precision of the orientation position of the target 8 and the small-amplitude adjustment of the distance between the target 8 and the pile foundation, a third motor 15 in the traversing mechanism is started to drive a screw 16 to rotate, and the connecting plate 10 can be moved out of the traversing cavity through the rotation of the screw 16, so that the adjusting plate 6 is pushed to be far away from the deflection plate 5, and the small-amplitude adjustment of the distance between the target 8 and the pile foundation is realized under the action of the traversing mechanism;
step four, before the adjustment of the distance between the target 8 and the pile foundation is finished, the traversing mechanism is started to carry out small-amplitude traversing operation on the adjusting plate 6, and then under the action of the transmission rod 23, the transmission mechanism can be driven to carry out horizontal rotation adjustment on the rotating disc 12 connected with the rotating shaft 22, when the rotating disc 12 is horizontally rotated and adjusted, the target 8 mounted on the plumb line 7 can be precisely adjusted in the direction, the condition that inclination deviation occurs due to centrifugal force during the integral rotation adjustment of the target 8 can be avoided, the shaking amplitude of the target 8 on the plumb line 7 is reduced, and the laser ranging instrument 2 can be conveniently and rapidly calibrated with the target 8 after the adjustment is stable;
Fifthly, when the adjusting plate 6 is moved and adjusted, the winder 20 is synchronously started, when the winder 20 is started, the wire rope 21 in the plumb line 7 can be wound and tightened, so that the plumb line 7 is also in a tightened state, after the plumb line 7 is tightened, the condition that two targets 8 swing greatly when the adjusting plate 6 moves greatly can be avoided, and collision between the lowest target 8 and the lifting column 4 can be avoided;
Step six, after the orientation adjustment of the target 8 is finished, observing and data acquisition of an inclination angle are carried out on the position of the central axis of the top surface of the pile foundation to be measured by starting the laser ranging instrument 2, the data acquired by the laser ranging instrument 2 are transmitted to the data analyzer by the data acquisition device, then the measured central axis data of the pile foundation and the initial detection parameters of the pile foundation are analyzed and processed, so that the offset data of the axis of the pile foundation can be obtained, and the inclination angle data of the measured pile foundation can be obtained;
and seventhly, after the detection of the pile foundation is finished, retracting all instrument equipment to finish the test operation.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. A detecting system for pile foundation top surface gradient, its characterized in that: the device comprises an equipment bracket (1), a laser ranging instrument (2) arranged at the top of the equipment bracket (1), data acquisition control equipment (9) arranged on a bracket at the upper part of the equipment bracket (1) and a plumb bob calibrating device;
The data acquisition control equipment (9) is internally provided with a data acquisition device, a data analyzer and a circuit module; the signal receiving end of the data acquisition device is electrically connected with the signal output end of the laser ranging instrument (2), the pile foundation initial detection parameters are set in the data analyzer, and the signal output end of the data acquisition device is electrically connected with the signal receiving end of the data analyzer; the circuit module is used for supplying power to the laser ranging instrument (2) and the data collector and the data analyzer;
The plumb calibrating device comprises a plumb strut (3), a containing cavity formed in the plumb strut (3), a lifting column (4) vertically movably arranged in the containing cavity and a deflection plate (5) rotatably arranged at the top end of the lifting column (4), wherein an adjusting plate (6) is arranged at the outer end of the deflection plate (5), a rotating disc (12) is rotatably embedded at the outer end of the bottom of the adjusting plate (6), a plumb line (7) is arranged at the bottom of the rotating disc (12), a pair of targets (8) are arranged on the plumb line (7), and a positioning assembly is arranged at the back of each target (8); a lifting assembly for adjusting the height of the lifting column (4) is arranged in the accommodating cavity of the vertical support column (3); a transverse moving cavity is formed in the deflection plate (5), and a transverse moving mechanism for horizontally moving the adjusting plate (6) is arranged in the transverse moving cavity; a transmission cavity is formed in the adjusting plate (6), and a transmission mechanism for rotating the rotating disc (12) is arranged in the transmission cavity;
The transverse moving mechanism comprises a connecting plate (10) transversely movably arranged in the transverse moving cavity, a screw rod (16) transversely rotatably arranged in the transverse moving cavity and a third motor (15) arranged in a deflection plate (5) at the outer side of the transverse moving cavity, wherein the outer end of the connecting plate (10) movably penetrates out of the transverse moving cavity and is fixedly connected with one end face of an adjusting plate (6), through holes are transversely formed in four corners of one end face of the connecting plate (10), transmission rods (23) are movably penetrated in the two through holes above one end face of the connecting plate (10), guide rods are movably penetrated in the two through holes below one end face of the connecting plate (10), the length of a rod body of the transmission rods (23) is larger than that of the guide rods, one ends of the transmission rods (23) and the guide rods movably penetrate into the transmission cavity, and the transmission rods (23) extend to one inner side of the transmission cavity; the other ends of the transmission rod (23) and the guide rod are fixedly connected with the inside of the transverse moving cavity; the driving shaft of the third motor (15) is fixedly connected with the screw rod (16) in the coaxial direction; a thread groove matched with the screw rod (16) is formed in the inner end surface of the connecting plate (10);
The transmission mechanism comprises a rotating shaft (22) which is arranged on the inner bottom surface of a transmission cavity, a driven belt wheel which is fixedly sleeved on the rotating shaft (22), a transmission shaft which is longitudinally arranged on the inner wall of one side of the transmission cavity close to the deflection plate (5), a transmission gear (25) which is fixedly sleeved on the front end shaft and the rear end shaft of the transmission shaft, and a bearing plate which is fixedly connected on the inner wall of one side of the transmission cavity, wherein the top surface of the bearing plate is vertically rotated to be provided with a driven shaft (24), the top end of the driven shaft (24) is fixedly connected with driven bevel teeth, a driving bevel tooth (26) which is meshed with the driven bevel tooth is fixedly sleeved on the transmission shaft, a transmission groove is transversely formed in the bottom of a rod body of the transmission rod (23) which is positioned in the transmission cavity, and a rack (27) for rotating the transmission gear (25) is arranged on one side of the inner top surface of the transmission groove; a driving belt pulley is fixedly sleeved on the upper shaft body of the driven shaft (24), and a transmission belt is sleeved between the driving belt pulley and the driven belt pulley;
The positioning assembly comprises a circular groove formed in the back of the target (8), a fixed seat (28) longitudinally fixedly connected to the middle of the circular groove, clamping plates (29) movably arranged on two sides of the fixed seat (28), a mounting cavity formed in the upper end and the lower end of the fixed seat (28), a pull-back rod (30) transversely movably arranged on two sides of the inner part of the mounting cavity and a drop-off preventing plate fixedly connected to the inner end of the pull-back rod (30), wherein the outer end of the pull-back rod (30) movably penetrates out of the mounting cavity and is fixedly connected with the rear end of the inner side surface of the clamping plates (29), and damping pads (32) are respectively arranged on the inner wall of the clamping plates (29) and the outer ring wall of the fixed seat (28); a return spring (31) is movably sleeved on a rod body of the pull rod (30) positioned in the mounting cavity;
The clamping plates (29) are of arc-shaped plate body structures, and the fixing seats (28) are of elliptic block structures; threading holes for the plumb line (7) to pass through are formed in the two sides of the inner top surface and the two sides of the inner bottom surface of the circular groove.
2. A detection system for pile foundation roof inclination according to claim 1, wherein: the lifting assembly comprises a screw rod (13) vertically and rotatably arranged on the inner bottom surface of the storage cavity and a first motor (11) arranged in the vertical support column (3) below the storage cavity, the bottom end of the screw rod (13) is coaxially and fixedly connected with a driving shaft of the first motor (11), the storage cavity is a rectangular cavity, and a rectangular limiting frame is sleeved at the bottom of the outer wall of the lifting column (4); the bottom surface of lifting column (4) vertically seted up with screw (13) complex screw hole, the body of rod of screw (13) is connected in screw hole.
3. A detection system for pile foundation roof inclination according to claim 1, wherein: the top end surface of the lifting column (4) is provided with a mounting groove, a second motor (14) is arranged in the mounting groove, the bottom surface of the deflection plate (5) is vertically and fixedly connected with a connecting shaft, and the bottom end of the connecting shaft is coaxially and fixedly connected with a driving shaft of the second motor (14); a battery box is arranged on one side of the bottom of the vertical support column (3), and a storage battery is arranged in the battery box.
4. A detection system for pile foundation roof inclination according to claim 1, wherein: the automatic winding machine is characterized in that a winding cavity is formed in the rotating disc (12), a fixed plate is arranged at the opening of the bottom of the winding cavity, a winding device (20) is arranged at the top of the fixed plate, fixed pipes (17) are vertically communicated with two sides of the bottom surface of the rotating disc (12), a connecting rope (19) is vertically fixedly connected to a sealing surface at the bottom of the fixed pipes (17), a vertically arranged connecting screw pipe (18) is fixedly connected to the bottom end of the connecting rope (19), external thread barrels are rotationally connected to two ends of a plumb line (7), and two ends of the plumb line (7) are respectively connected with the connecting screw pipe (18) in a screwing mode through the external thread barrels; plumb line (7) and connecting rope (19) are the cavity form, just inside wire rope (21) of wearing to be equipped with of plumb line (7), the tip of wire rope (21) all extends into the rolling intracavity portion through fixed pipe (17), the one end of wire rope (21) is connected in the rolling barrel bottom of rolling ware (20), and the other end of wire rope (21) is connected at the rolling barrel top of rolling ware (20).
5. A method of using a system for detecting the inclination of the top surface of a pile according to any one of claims 1 to 4, comprising the steps of:
S1, firstly, placing an equipment support (1) on one side of a foundation pile to be detected, installing a laser ranging instrument (2) on the equipment support (1), and starting a circuit module to supply power to the laser ranging instrument (2) and a data collector and a data analyzer; then placing the plumb calibrating device on the other side of the pile foundation to be measured, and enabling the plumb calibrating device to be fixedly erected on the ground;
S2, starting a lifting assembly to play a role in lifting and adjusting the lifting column (4), starting a second motor (14) to adjust the deflection direction of the deflection plate (5) according to the position of the laser distance measuring instrument (2) after the lifting column (4) is lifted, and adjusting one end of the deflection plate (5) to point to the laser distance measuring instrument (2), wherein the adjusting plate (6) and a plumb line (7) and a pair of targets (8) arranged at the bottom of the adjusting plate are also oriented to the laser distance measuring instrument (2);
S3, in order to meet the requirements of the accuracy of the orientation position of the target (8) and the small-amplitude adjustment of the distance between the target (8) and the pile foundation, the transverse moving mechanism is started to push the adjusting plate (6) to be far away from the deflection plate (5), and then the distance between the target (8) and the pile foundation is adjusted in a small-amplitude manner under the action of the transverse moving mechanism;
S4, before the adjustment of the distance between the target (8) and the pile foundation is finished, the transverse moving mechanism is started to carry out small-amplitude transverse moving operation on the adjusting plate (6), and under the action of the transmission rod (23), the transmission mechanism can be driven to carry out horizontal rotation adjustment on the rotating disc (12) connected with the rotating shaft (22), so that the target (8) mounted on the plumb line (7) can be accurately adjusted in the direction, and the laser distance measuring instrument (2) can be conveniently and rapidly calibrated with the target (8) after adjustment and stabilization;
S5, when the adjusting plate (6) is moved and adjusted, the winder (20) is synchronously started, when the winder (20) is started, the steel wire rope (21) in the plumb line (7) can be wound and tightened, the plumb line (7) is further in a tightened state, after the plumb line (7) is tightened, the condition that two targets (8) swing greatly when the adjusting plate (6) moves greatly can be avoided, and collision between the lowermost target (8) and the lifting column (4) can be avoided;
S6, after the orientation adjustment of the target (8) is finished, observing and data acquisition of an inclination angle are carried out on the top surface central axis position of the pile foundation to be detected by starting the laser ranging instrument (2), data measured by the laser ranging instrument (2) are transmitted to the data analyzer by the data acquisition unit, then analysis processing is carried out on the measured pile foundation central axis data and the initial pile foundation detection parameters, so that deviation data of the axis of the pile foundation can be obtained, and further the inclination angle data of the measured pile foundation is obtained;
and S7, after the detection of the pile foundation is finished, retracting each instrument and equipment to finish the test operation.
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