A non-contact detection device and method for detecting the spatial posture of a rotary drilling rod

Abstract

The present invention discloses a non-contact detection device for the spatial posture of a rotary drilling rod and a detection method thereof, comprising a middle hinged attachment rod, a left hinged attachment rod, a limit pin, an embedded magnet, an L-shaped small prism and a right hinged attachment rod, wherein three L-shaped small prisms are respectively fastened to the middle of the outer front side walls of the three attachment rods, and embedded magnets are installed in the reserved grooves of the three attachment rods. After the device is assembled, two sets of the same device are respectively adsorbed to the positioning lines at the top and bottom of the drill rod. After the rough positioning of the drilling rig is completed, the three-dimensional coordinates of the six L-shaped small prisms on the top device and the bottom device are measured by a total station, and the measured coordinate data are processed to obtain the spatial posture of the drill rod, and the verticality and the center position of the drill rod are accurately adjusted until the requirements of high-quality drilling and hole formation are met. The method can not only ensure the measurement accuracy, but also improve the efficiency of the adjustment of the spatial posture of the drill rod.

Description

Technical Field

[0001] The invention relates to the field of construction measurement of large bridge substructures, and in particular to a non-contact detection device and a detection method for the spatial posture of a rotary drilling rod used in the construction of large-diameter pile foundations of a main tower cap of a large-span bridge. Background Art

[0002] As the record of the main span of my country's kilometer-level long-span bridges continues to be refreshed, the height of the main bridge tower, the structural size and the load-bearing load are also increasing synchronously. Therefore, as the main load-bearing structure, the number of pile foundations in the lower structure group is increasing, and the hole diameter is increasing. In order to improve the efficiency of pile foundation construction, the drilling process and equipment are also constantly innovating. Among them, the walking large-diameter rotary drilling rig has become the main force in pile foundation drilling operations due to its high drilling efficiency and flexible transfer and movement. The positioning accuracy of the rotary drilling rig's own sensor is not high, and the verticality of the drill rod and the positioning accuracy of the hole center cannot be guaranteed. The spatial posture of the drill rod will change due to geological reasons during the drilling process, resulting in low quality of pile foundation holes, affecting the subsequent lowering of the pile foundation reinforcement cage and the pile foundation bearing capacity after the pile is formed cannot meet the design requirements.

[0003] In order to meet the construction needs of large diameter pile foundations and ensure the quality of hole digging and hole forming in rotary drilling operations, it is urgently necessary to develop a non-contact detection device and detection method for the spatial posture of the rotary drilling drill rod, so as to improve the adjustment efficiency of the spatial posture of the rotary drilling drill rod and reduce the drilling positioning deviation. Summary of the invention

[0004] The first purpose of the present invention is to provide a contactless detection device for the spatial posture of the drill rod of a rotary drilling rig, which can ensure the accuracy of the spatial posture of the drill rod during drilling positioning and drilling, and while reducing the safety risks of general detection methods, can greatly reduce the drill rod positioning and the drill rod spatial posture verification time during drilling, thereby improving the drilling operation efficiency.

[0005] The second object of the present invention is to provide a contactless detection method for the spatial posture of a rotary drilling drill rod, which can both ensure measurement accuracy and improve the efficiency of adjusting the spatial posture of the drill rod.

[0006] The first object of the present invention is achieved by:

[0007] A contactless detection device for the spatial posture of a rotary drilling rod, characterized in that it includes a middle hinged attachment rod, a left hinged attachment rod, a limit pin, an embedded magnet, an L-shaped small prism and a right hinged attachment rod. The middle hinged attachment rod has the same shape and structure as the left hinged attachment rod and the right hinged attachment rod arranged at the left and right ends of the middle hinged attachment rod. The left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod are all in the shape of long strips, and the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod are all provided with reserved grooves which are open upward and concave inwardly. The left and right ends of the middle hinged attachment rod are respectively connected to the right end of the left hinged attachment rod and the left end of the right hinged attachment rod through the limit pin. A small L-shaped prism is arranged in the middle of the front side wall of the middle hinged attachment rod, and the prism fixing bolt is screwed from the front After passing through the reserved screw holes at the roots of the L-shaped small prisms and the reserved screw holes in the centers of the attachment rods of the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod backwards, the three L-shaped small prisms are respectively fastened to the middle of the outer front side walls of the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod together with the prism fixing nuts; embedded magnets are arranged in the reserved grooves of the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod, and after the magnet fixing bolts pass through the middle reserved screw holes of the embedded magnets and the reserved screw holes in the centers of the reserved grooves of the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod from top to bottom, the three embedded magnets are respectively fastened to the reserved grooves of the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod together with the magnet fixing nuts.

[0008] The middle hinged attachment rod is a square rod with connecting heads with arc-shaped hinges at both ends, and a middle through-type pin hole for accommodating a limit pin is arranged in the connecting head.

[0009] The left hinged attachment rod and the right hinged attachment rod are square rods with a notch at one end, and side through-type pin shaft holes for placing a limit pin shaft are arranged on the upper and lower groove walls of the notch.

[0010] The left hinged attachment rod and the middle hinged attachment rod, as well as the middle hinged attachment rod and the right hinged attachment rod can all rotate horizontally around the limiting pin shaft.

[0011] The embedded magnet is a long strip magnet with a screw hole on the top. Through the magnetic physical properties of the embedded magnet, the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod can be adsorbed on the drill rod.

[0012] The L-shaped small prism is a prism assembly with a screw hole at the root. The L-shaped small prism is a device for acquiring the three-dimensional coordinates of the characteristic points corresponding to the spatial posture of the drill rod.

[0013] The second object of the present invention is achieved by:

[0014] A non-contact detection method for the spatial posture of a rotary drilling rod is characterized by: the specific steps are as follows:

[0015] A. When the drill pipe of the rotary drilling rig is in a horizontal position, a full-section positioning line is engraved 1.5 meters above the root of the drill pipe and 1.5 meters below the top. A set of non-contact detection devices for the spatial posture of the rotary drilling rig pipe is installed on each full-section positioning line to obtain the top-level device and the bottom-level device;

[0016] B. Use the total station to lay out the center of the hole to be drilled, guide the large-diameter walking rotary drill into position, and use the drilling rig's own sensor system to roughly position the drill rod;

[0017] C. Use the total station polar coordinate method to measure and obtain the three-dimensional coordinates of a total of 6 L-shaped small prisms on the top device and the bottom device; obtain the center plane coordinates (X1, Y1) and (X2, Y2) of the top device and the bottom device, that is, the center plane coordinates of the drill rod on the two elevation planes; through the difference between the two center plane coordinates and the design coordinates of the pile position center (ΔX1, ΔY1) and (ΔX2, ΔY2), and then calculate the difference, the relative deviation (ΔX, ΔY) of the drill rod center of the top device and the bottom device is obtained, combined with the height difference ΔZ of the top device and the bottom device, the verticality of the drill rod in the longitudinal direction and the verticality in the transverse direction can be obtained by the ratio (ΔX / ΔZ) and (ΔY / ΔZ);

[0018] D. If the verticality in the longitudinal direction and the verticality in the transverse direction meet the design specification requirements, the drilling rig is guided by the drill rod center deviation of the bottom device to accurately position the drill bit;

[0019] E. If the verticality in the longitudinal direction and the horizontal direction do not meet the design specification requirements, the relative deviation (ΔX, ΔY) of the drill rod center between the top device and the bottom device is used to guide the drill rod to adjust its spatial posture. Repeat the operation process of step C. When the verticality in the longitudinal direction and the horizontal direction meet the design specification requirements, the construction is completed.

[0020] The contactless detection device for the spatial posture of a drill rod of a rotary drilling rig of the present invention comprises a middle hinged attachment rod, a left hinged attachment rod, a limit pin, an embedded magnet, an L-shaped small prism and a right hinged attachment rod. The three L-shaped small prisms are respectively fastened to the middle of the outer front side walls of the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod. Embedded magnets are installed in the reserved grooves of the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod. The device can ensure the accuracy of the spatial posture of the drill rod of the rotary drilling rig during drilling positioning and the drilling process. While reducing the safety risks of general detection methods, it can greatly reduce the time for checking the spatial posture of the drill rod during drilling positioning and the drilling process, thereby improving the efficiency of drilling operations. After the device is assembled, two sets of the same device are adsorbed to the positioning lines at the top and bottom of the drill pipe to obtain the top and bottom devices. After the rough positioning of the drilling rig is completed, the three-dimensional coordinates of the six L-shaped small prisms on the top and bottom devices are measured by the total station. The measured coordinate data is processed to obtain the spatial posture of the drill pipe, and the verticality and center position of the drill pipe are accurately adjusted until the requirements of high-quality drilling and hole formation are met. The use of a non-contact detection method for the spatial posture of the rotary drilling drill pipe can not only ensure the measurement accuracy and reduce the drilling positioning deviation, but also improve the efficiency of the adjustment of the spatial posture of the drill pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the overall structural diagram of the device of the present invention;

[0022] Figure 2 This is a schematic diagram of the device of the present invention after assembly is completed;

[0023] Figure 3 It is a schematic diagram of the installation of the device of the present invention;

[0024] Figure 4 It is a schematic diagram of the positioning method of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0026] A contactless detection device for the spatial posture of a rotary drilling drill rod, comprising a middle hinged attachment rod 1, a left hinged attachment rod 2, a limit pin 3, an embedded magnet 4, an L-shaped small prism 5, a fixing bolt 6, a fixing nut 7 and a right hinged attachment rod 8. The middle hinged attachment rod 1 and the left hinged attachment rod 2 and the right hinged attachment rod 8 arranged at the left and right ends of the middle hinged attachment rod 1 are of the same shape and structure. The left hinged attachment rod 2, the middle hinged attachment rod 1 and the right hinged attachment rod 8 are all in the shape of long strips, and a reserved groove 9 which is open upward and concave is arranged on the left hinged attachment rod 2, the middle hinged attachment rod 1 and the right hinged attachment rod 8. The left and right ends of the middle hinged attachment rod 1 are respectively connected to the right end of the left hinged attachment rod 2 and the left end of the right hinged attachment rod 8 through the limit pin 3. An L-shaped small prism 5 is arranged in the middle of the front side wall of the middle hinged attachment rod 1. The prism fixing bolt 6 extends from front to back. After passing through the reserved screw hole 16 at the root of the L-shaped small prism 5 and the reserved screw hole 17 at the center of the attachment rod of the left hinged attachment rod 2, the middle hinged attachment rod 1, and the right hinged attachment rod 8, the three L-shaped small prisms 5 are respectively fastened to the middle of the front side wall of the left hinged attachment rod 2, the middle hinged attachment rod 1, and the right hinged attachment rod 8 together with the prism fixing nut 7; An embedded magnet 4 is provided in each of the reserved grooves 9. After the magnet fixing bolt 10 passes through the middle reserved screw hole 18 of the embedded magnet 4 and the reserved screw hole 19 in the center of the reserved grooves 9 of the left hinged attachment rod 2, the middle hinged attachment rod 1 and the right hinged attachment rod 8 from top to bottom, the three embedded magnets 4 are fastened in the reserved grooves 9 of the left hinged attachment rod 2, the middle hinged attachment rod 1 and the right hinged attachment rod 8 respectively together with the magnet fixing nut 11.

[0027] The middle hinged attachment rod 1 is a square rod with connecting heads 12 with arc-shaped hinges at both ends. A middle through-type pin hole 13 for accommodating the limit pin 3 is provided in the connecting head 12 .

[0028] The left hinged attachment rod 2 and the right hinged attachment rod 8 are square rods with a notch 14 at one end. The upper and lower groove walls of the notch 14 are provided with side through-type pin holes 15 for accommodating the limit pin 3.

[0029] The left hinged attachment rod 2 and the middle hinged attachment rod 1 , as well as the middle hinged attachment rod 1 and the right hinged attachment rod 8 can all rotate horizontally around the limit pin 3 .

[0030] The embedded magnet 4 is a long strip magnet with a screw hole on the top. Through the magnetic physical properties of the embedded magnet 4, the left hinged attachment rod 2, the middle hinged attachment rod 1, and the right hinged attachment rod 8 can be adsorbed on the drill rod 20.

[0031] The L-shaped small prism 5 is a prism assembly with a screw hole at the root. The L-shaped small prism 5 is a device for acquiring the three-dimensional coordinates of the characteristic points corresponding to the spatial posture of the drill rod.

[0032] The assembly process of a non-contact detection device for the spatial posture of a rotary drilling rod includes:

[0033] The first step is to insert the three embedded magnets 4 into the reserved slots 9 of the left hinged attachment rod 2, the middle hinged attachment rod 1, and the right hinged attachment rod 8 respectively. At this time, the middle reserved screw hole 18 of the embedded magnet 4 is aligned with the reserved screw hole 19 in the center of the reserved slot 9 of the left hinged attachment rod 2, the middle hinged attachment rod 1, and the right hinged attachment rod 8. The magnet fixing bolt 10 is screwed into the middle reserved screw hole 18 and the reserved screw hole 19 in the center of the reserved slot, and the magnet fixing nut 11 is screwed in to fix the embedded magnet 4 in the reserved slots 9 of the left hinged attachment rod 2, the middle hinged attachment rod 1, and the right hinged attachment rod 8;

[0034] The second step is to align the pin-side through-type pin shaft holes 15 with the notches 14 at one end of the left hinged attachment rod 2 and the right hinged attachment rod 8 with the middle through-type pin shaft holes 13 of the connectors 12 at both ends of the middle hinged attachment rod 1, and insert the limit pin shaft 3;

[0035] In the third step, after aligning the reserved screw holes 16 at the roots of the three L-shaped small prisms 5 with the reserved screw holes 17 in the center of the attachment rods of the left hinged attachment rod 2, the middle hinged attachment rod 1, and the right hinged attachment rod 8, the prism fixing bolt 6 passes through the reserved screw holes 16 at the roots of the L-shaped small prisms 5 and the reserved screw holes 17 in the center of the attachment rods of the left hinged attachment rod 2, the middle hinged attachment rod 1, and the right hinged attachment rod 8 from front to back, and then together with the prism fixing nut 7, the three L-shaped small prisms 5 are respectively fastened to the middle of the outer front side walls of the left hinged attachment rod 2, the middle hinged attachment rod 1, and the right hinged attachment rod 8, and the device assembly is completed.

[0036] A non-contact detection method for the spatial posture of a rotary drilling drill rod, the specific steps are as follows:

[0037] A. When the drill rod 16 of the rotary drilling rig is in a horizontal state, a full-section positioning line 21 is engraved 1.5 meters above the root of the drill rod 16 and 1.5 meters below the top. A set of non-contact detection devices for the spatial posture of the rotary drilling rig rod is installed on each full-section positioning line 21 to obtain a top-level device and a bottom-level device;

[0038] B. Use the total station to lay out the center of the hole to be drilled, guide the walking-type large-diameter rotary drill to position, and use the drilling rig's own sensor system to roughly position the drill rod 16;

[0039] C. Use the total station polar coordinate method to measure and obtain the three-dimensional coordinates of a total of 6 L-shaped small prisms 5 on the top device and the bottom device; obtain the center plane coordinates (X1, Y1) and (X2, Y2) of the top device and the bottom device, that is, the center plane coordinates of the drill rod 16 on the two elevation planes; through the difference between the two center plane coordinates and the design coordinates of the pile position center (ΔX1, ΔY1) and (ΔX2, ΔY2), and then calculate the difference, the relative deviation (ΔX, ΔY) of the center of the drill rod 16 of the top device and the bottom device is obtained, combined with the height difference ΔZ of the top device and the bottom device, the verticality of the drill rod 16 in the longitudinal direction and the verticality in the transverse direction can be obtained by the ratios (ΔX / ΔZ) and (ΔY / ΔZ);

[0040] D. If the verticality in the longitudinal direction and the verticality in the transverse direction meet the design specification requirements, the drilling rig is guided by the center deviation of the drill rod 16 of the bottom device to accurately position the drill bit;

[0041] E. If the verticality in the longitudinal direction and the horizontal direction do not meet the design specification requirements, the relative deviation (ΔX, ΔY) of the center of the drill rod 16 between the top device and the bottom device is used to guide the drill rod 16 to adjust its spatial posture, and the operation process of step C is repeated. When the verticality in the longitudinal direction and the horizontal direction meet the design specification requirements, the construction is completed.

[0042] The completion of the present invention is not limited to the non-contact detection of the spatial posture of the walking rotary drilling rod of the large-diameter pile foundation of the bridge. Any site type with similar shapes is within the scope of the rights of the present invention, which can not only ensure the positioning measurement accuracy, but also improve the working efficiency. The above is only a preferred feasible implementation case of the present invention, and does not limit the scope of the rights of the present invention. All the contents of the present invention specification and drawings are included in the scope of the rights of the present invention.

Claims

1. A method for contactless detection of the spatial posture of a rotary drilling rod, characterized in that: The specific steps are as follows: A. When the drill pipe of the rotary drilling rig is in a horizontal position, a full-section positioning line is engraved 1.5 meters above the root of the drill pipe and 1.5 meters below the top. A set of non-contact detection devices for the spatial posture of the rotary drilling rig pipe is installed on each full-section positioning line to obtain the top-level device and the bottom-level device; The non-contact detection device for the spatial posture of the rotary drilling rod comprises a middle hinged attachment rod, a left hinged attachment rod, a limit pin shaft, an embedded magnet, an L-shaped small prism and a right hinged attachment rod. The left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod, which are the same in shape and structure, are provided with a reserved groove which is open upward and concave inward. The left and right ends of the middle hinged attachment rod are respectively connected to the right end of the left hinged attachment rod and the left end of the right hinged attachment rod through the limit pin shaft. An L-shaped small prism is arranged in the middle of the side wall, and the prism fixing bolts and the prism fixing nuts together fasten the three L-shaped small prisms to the middle of the front side wall outside of the left hinged attachment rod, the middle hinged attachment rod, and the right hinged attachment rod respectively; embedded magnets are arranged in the reserved grooves of the left hinged attachment rod, the middle hinged attachment rod, and the right hinged attachment rod, and the magnet fixing bolts and the magnet fixing nuts together fasten the three embedded magnets to the reserved grooves of the left hinged attachment rod, the middle hinged attachment rod, and the right hinged attachment rod respectively; B. Use the total station to lay out the center of the hole to be drilled, guide the large-diameter walking rotary drill into position, and use the drilling rig's own sensor system to roughly position the drill rod; C. Use the total station polar coordinate method to measure and obtain the three-dimensional coordinates of a total of 6 L-shaped small prisms on the top device and the bottom device; obtain the center plane coordinates (X1, Y1) and (X2, Y2) of the top device and the bottom device, that is, the center plane coordinates of the drill rod on the two elevation planes; through the difference between the two center plane coordinates and the design coordinates of the pile position center (ΔX1, ΔY1) and (ΔX2, ΔY2), and then calculate the difference, the relative deviation (ΔX, ΔY) of the drill rod center of the top device and the bottom device is obtained, combined with the height difference ΔZ of the top device and the bottom device, the verticality of the drill rod in the longitudinal direction and the verticality in the transverse direction can be obtained by the ratio (ΔX / ΔZ) and (ΔY / ΔZ); D. If the verticality in the longitudinal direction and the verticality in the transverse direction meet the design specification requirements, the drilling rig is guided by the drill rod center deviation of the bottom device to accurately position the drill bit; E. If the verticality in the longitudinal direction and the horizontal direction do not meet the design specification requirements, the relative deviation (ΔX, ΔY) of the drill rod center between the top device and the bottom device is used to guide the drill rod to adjust its spatial posture. Repeat the operation process of step C. When the verticality in the longitudinal direction and the horizontal direction meet the design specification requirements, the construction is completed.

2. The non-contact detection method for the spatial posture of a rotary drilling rod according to claim 1 is characterized in that: The middle hinged attachment rod is a square rod with connecting heads with arc-shaped hinges at both ends, and a middle through-type pin hole for accommodating a limit pin is arranged in the connecting head.

3. The non-contact detection method for the spatial posture of a rotary drilling rod according to claim 1 is characterized in that: The left hinged attachment rod and the right hinged attachment rod are square rods with a notch at one end, and side through-type pin shaft holes for placing a limit pin shaft are arranged on the upper and lower groove walls of the notch.

4. The non-contact detection method for the spatial posture of a rotary drilling rod according to claim 1 is characterized in that: The left hinged attachment rod and the middle hinged attachment rod, as well as the middle hinged attachment rod and the right hinged attachment rod can all be horizontally rotated around the limiting pin shaft.

5. The non-contact detection method for the spatial posture of a rotary drilling rod according to claim 1 is characterized in that: The embedded magnet is a long strip magnet with a screw hole on the top. Through the magnetic physical properties of the embedded magnet, the left hinged attachment rod, the middle hinged attachment rod and the right hinged attachment rod can be adsorbed on the drill rod.

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