An attachment column type three-dimensional scanning device and method

Abstract

The application discloses a kind of three-dimensional scanning device and method of attached column, the device is set on lattice column according to required height, the device includes two limit rods, four connecting rods, a plurality of first bolts, a plurality of second bolts, telescopic mechanism, tray for installing three-dimensional scanner and tray installation leveling mechanism, two limit rods are cross horizontally arranged on lattice column, four connecting rods are placed on two limit rods and the four connecting rods are respectively arranged closely on four side surfaces of lattice column, tray installation leveling mechanism is installed on one of connecting rods by telescopic mechanism, tray is installed on tray installation leveling mechanism, by erecting attached column three-dimensional scanning device on lattice column, the problem that it is not firm to erect due to pit bottom soft soil, data is easily distorted, by the attached column three-dimensional scanning device is set on lattice column according to required height, the problem that conventional scanning can only scan in pit top and pit bottom, foundation pit middle part depth cannot be point monitored.

Description

Technical Field

[0001] This invention belongs to the field of information-based measurement technology for foundation pits, and specifically relates to a column-attached three-dimensional scanning device and method. Background Technology

[0002] Conventional 3D scanning methods involve erecting a stable support frame, on which the 3D scanner is mounted for scanning. This method is suitable for hard ground surfaces, such as concrete pavements. However, during foundation pit excavation, the excavation surface is often in a soft environment such as soft soil. The support frame cannot be stably erected, causing the entire support system to vibrate or even shift during the 3D scanning process due to the rapid rotation of the equipment, resulting in inaccurate measurement data.

[0003] Furthermore, since the monitoring of the foundation pit can only be carried out on the ground outside the pit and at the bottom of the pit, the scanning points in the middle depth of the foundation pit cannot be set up, which greatly restricts the measurement location and makes it impossible to guarantee the measurement accuracy of the middle depth of the foundation pit. Summary of the Invention

[0004] This invention aims to provide a column-mounted three-dimensional scanning device and method. By placing the three-dimensional scanner on a stable vertical structure such as a column, it solves the problems of measurement data distortion caused by unstable installation at the bottom of the pit and the inability to place monitoring points in the middle depth. It is suitable for on-site monitoring during the deep foundation pit excavation stage and ensures the accuracy of the monitoring data of the entire foundation pit.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A column-mounted 3D scanning device is mounted on a lattice column at a required height. The device includes two limiting rods, four connecting rods, several first pins, several second pins, a telescopic mechanism, a tray for mounting the 3D scanner, and a tray mounting and leveling mechanism. The two limiting rods include a longitudinally positioned limiting rod and a transversely positioned limiting rod. The longitudinally positioned limiting rod is horizontally inserted into the lattice column, with its two ends extending from opposite sides of the column. The transversely positioned limiting rod rests horizontally above the longitudinally positioned limiting rod, with its two ends extending from opposite sides of the lattice column. The two limiting rods are perpendicular to each other. The four connecting rods have several vertically penetrating pin holes spaced evenly along their axial direction. The distance between the two outermost limiting holes on each connecting rod is greater than the sum of the width of the lattice column and the width of the two connecting rods. The connecting rod rests on the two limiting rods, and the four connecting rods are respectively set close to the four sides of the lattice column. The four connecting rods include two horizontally arranged connecting rods and two vertically arranged connecting rods. The vertically arranged connecting rods are set on the same side end of the two horizontally arranged connecting rods. The two ends of the vertically arranged connecting rods are respectively provided with U-shaped elbows for the horizontally arranged connecting rods to extend into. The horizontally arranged connecting rods are provided with a first pin to prevent the corresponding vertically arranged connecting rods from horizontally shifting. Each of the four connecting rods is provided with a pair of second pins to prevent the corresponding limiting rods from horizontally shifting. The pallet mounting and leveling mechanism is installed on one of the connecting rods through the telescopic mechanism. The telescopic mechanism is horizontally arranged, and the horizontal position of the pallet mounting and leveling mechanism can be adjusted through the telescopic mechanism. The pallet is installed on the pallet mounting and leveling mechanism. The pallet is provided with a circular level bubble. The pallet mounting and leveling mechanism makes the pallet level.

[0007] Preferably, in the above-mentioned column-mounted three-dimensional scanning device, the longitudinally arranged limiting rod has an upward-opening slot in the middle, and the transversely arranged limiting rod has a downward-opening slot in the middle. The slot of the transversely arranged limiting rod is connected with the slot of the longitudinally arranged limiting rod, so that the longitudinally arranged limiting rod and the transversely arranged limiting rod are horizontally intersecting and their upper surfaces are flush.

[0008] Preferably, in the above-mentioned column-mounted 3D scanning device, the tray mounting and leveling mechanism includes a chassis and three bolt assemblies. Each bolt assembly includes a bolt and a corresponding nut. The chassis is a horizontally set triangular plate. The shape and size of the tray are consistent with the chassis. Bolt holes matching the bolts are opened at the three corners of the chassis and the three corners of the tray. The bolts of the three bolt assemblies pass through the corresponding bolt holes on the tray and the corresponding bolt holes on the chassis in sequence and are then locked by the corresponding nuts. The height position of the three corners of the tray is adjusted by rotating the three bolts so that the tray is in a horizontal state.

[0009] Preferably, in the above-mentioned column-mounted 3D scanning device, the telescopic mechanism includes a cylinder and a threaded rod. The cylinder has an internal thread that matches the threaded rod. The cylinder is horizontally positioned. One end of the cylinder is fixedly connected to one of the connecting rods. The other end of the cylinder is threadedly connected to one end of the threaded rod. The other end of the threaded rod is fixedly connected to the tray mounting and leveling mechanism.

[0010] Preferably, in the above-mentioned column-attached three-dimensional scanning device, the limiting rods are set at different height positions of the lattice column as needed to realize the scanning of different height positions of the foundation pit.

[0011] A column-attached 3D scanning method includes the following steps:

[0012] Step 1: Insert one limiting rod horizontally longitudinally into the lattice column to the required height. Insert another limiting rod horizontally transversely into the lattice column, such that the two ends of the longitudinal limiting rod extend from opposite sides of the lattice column, and the two ends of the transverse limiting rod extend from opposite sides of the lattice column. The transverse limiting rod rests horizontally above the longitudinal limiting rod, and is perpendicular to the longitudinal limiting rod. Place the four connecting rods on the two limiting rods, with each connecting rod tightly against the four sides of the lattice column. Each connecting rod has several vertically penetrating pin holes evenly spaced along its axial direction. The distance between the two outermost limiting holes on each connecting rod is greater than the width of the lattice column. The sum of the widths of the two connecting rods, the four connecting rods include two horizontally arranged connecting rods and two vertically arranged connecting rods. The vertically arranged connecting rods are arranged on the same side end of the two horizontally arranged connecting rods. The two ends of the vertically arranged connecting rods are respectively provided with U-shaped elbows for the horizontally arranged connecting rods to extend into. The horizontally arranged connecting rods are provided with a first pin to prevent the corresponding vertically arranged connecting rods from horizontally shifting. Each of the four connecting rods is provided with a pair of second pins to prevent the corresponding limiting rods from horizontally shifting. The pallet mounting and leveling mechanism is mounted on one of the connecting rods through the telescopic mechanism. The telescopic mechanism is horizontally arranged. The pallet is mounted on the pallet mounting and leveling mechanism. The pallet is provided with a circular level bubble.

[0013] Step 2: Adjust the horizontal position of the pallet mounting and leveling mechanism using the telescopic mechanism;

[0014] Step 3: Adjust the pallet installation leveling mechanism to center the circular level bubble, thereby making the pallet level.

[0015] Step 4: Install the 3D scanner base onto the tray, level it, and then scan the pit.

[0016] Preferably, in the above-described column-attached three-dimensional scanning method, the longitudinally arranged limiting rod has an upward-opening slot in its middle, and the transversely arranged limiting rod has a downward-opening slot in its middle. The slot of the transversely arranged limiting rod is connected to the slot of the longitudinally arranged limiting rod, so that the longitudinally arranged limiting rod and the transversely arranged limiting rod are horizontally intersecting and their upper surfaces are flush.

[0017] Preferably, in the above-described column-mounted 3D scanning method, the tray mounting and leveling mechanism includes a chassis and three bolt assemblies. Each bolt assembly includes a bolt and a corresponding nut. The chassis is a horizontally positioned triangular plate, and the shape and size of the tray are consistent with the chassis. Bolt holes matching the bolts are opened at the three corners of the chassis and the three corners of the tray. The bolts of the three bolt assemblies pass through the corresponding bolt holes on the tray and the corresponding bolt holes on the chassis in sequence and are then locked by the corresponding nuts. The height position of the three corners of the tray is adjusted by rotating the three bolts, so that the tray is in a horizontal state.

[0018] Preferably, in the above-mentioned column-attached 3D scanning method, the telescopic mechanism includes a cylinder and a threaded rod. The cylinder has an internal thread that matches the threaded rod. The cylinder is horizontally positioned. One end of the cylinder is fixedly connected to one of the connecting rods, and the other end of the cylinder is threadedly connected to one end of the threaded rod. The other end of the threaded rod is fixedly connected to the tray mounting and leveling mechanism.

[0019] Preferably, in the above-mentioned column-attached three-dimensional scanning method, the limiting rods are set at different height positions of the lattice column as needed to realize the scanning of different height positions of the foundation pit.

[0020] As can be seen from the above-disclosed technical solutions, the beneficial effects of the present invention compared with the prior art are as follows:

[0021] This invention provides a column-mounted 3D scanning device and method. The column-mounted 3D scanning device is mounted on a lattice column at the required height. The device includes two limiting rods, four connecting rods, several first pins, several second pins, a telescopic mechanism, a tray for mounting the 3D scanner, and a tray mounting and leveling mechanism. The two limiting rods include one longitudinally positioned limiting rod and one laterally positioned limiting rod. The longitudinally positioned limiting rod is horizontally inserted into the lattice column, with its two ends extending from opposite sides of the column. The laterally positioned limiting rod rests horizontally above the longitudinally positioned limiting rod, with its two ends extending from opposite sides of the column. The two limiting rods are perpendicular to each other. The four connecting rods have several vertically penetrating pin holes spaced evenly along their axial direction. The distance between the two outermost limiting holes on each connecting rod is greater than the sum of the width of the lattice column and the width of the two connecting rods. The four connecting rods rest on the two limiting rods and are respectively close to the four sides of the lattice column. The four connecting rods include two transversely arranged connecting rods and two longitudinally arranged connecting rods. The longitudinally arranged connecting rods are located on the same side of the two transversely arranged connecting rods. Each end of the longitudinally arranged connecting rod has a U-shaped bend for the transversely arranged connecting rods to extend into. The transversely arranged connecting rods have a first pin to prevent horizontal displacement of the corresponding longitudinally arranged connecting rod. Each of the four connecting rods has a pair of second pins to prevent horizontal displacement of the corresponding limiting rod. The pallet mounting and leveling mechanism is mounted on one of the connecting rods via a telescopic mechanism. The telescopic mechanism is horizontally arranged and can adjust the horizontal position of the pallet mounting and leveling mechanism. The pallet is mounted on the pallet mounting and leveling mechanism and has a circular level bubble. The pallet mounting and leveling mechanism keeps the pallet in a horizontal state. This invention solves the problem of unstable installation and data distortion caused by soft soil at the bottom of the pit by mounting the column-attached 3D scanning device on the lattice column. By installing the column-mounted 3D scanning device on the lattice column at the required height, the column-mounted 3D scanning device can be installed at various heights of the lattice column, solving the problem that conventional scanning can only scan at the top and bottom of the pit and that it is impossible to set up monitoring points in the middle depth of the foundation pit. Attached Figure Description

[0022] Figure 1 This is a structural diagram of a column-mounted 3D scanning device (showing the installation of the first and second pins).

[0023] Figure 2 This is a schematic diagram of the installation of the first and second pins.

[0024] Figure 3This is a structural diagram of the pallet, the pallet mounting and leveling mechanism, and the telescopic mechanism.

[0025] Figure 4 This is a top view of the tray and the three bolt assembly.

[0026] Figure 5 This is an assembly diagram of two limit rods.

[0027] In the diagram: 1-lattice column, 11-angle steel, 12-connecting piece, 2-limiting rod, 21-slot, 3-horizontally arranged connecting rod, 4-longitudinally arranged connecting rod, 5-first pin, 6-second pin, 7-telescopic mechanism, 71-cylinder, 72-threaded rod, 8-pallet, 9-pallet installation and leveling mechanism, 91-base plate, 92-bolt, 10-circular level bubble. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The technical content and features of the present invention will be described in detail below with reference to the listed embodiments and the accompanying drawings. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clearly illustrate the embodiments of the present invention. For ease of description, the terms "upper" and "lower" used below are consistent with the upper and lower directions in the drawings, but this should not be construed as a limitation of the technical solution of the present invention.

[0029] Please see Figures 1 to 5This embodiment discloses a column-mounted 3D scanning device. The column-mounted 3D scanning device is mounted on a lattice column 1 at the required height. The device includes two limiting rods 2, four connecting rods, several first pins 5, several second pins 6, a telescopic mechanism 7, a tray 8 for mounting the 3D scanner, and a tray mounting and leveling mechanism 9. The two limiting rods 2 include one longitudinally positioned limiting rod 2 and one laterally positioned limiting rod 2. The longitudinally positioned limiting rod 2 is horizontally inserted into the lattice column 1, with both ends extending from opposite sides of the lattice column 1. The laterally positioned limiting rod 2 rests horizontally above the longitudinally positioned limiting rod 2, with both ends extending from the opposite side of the lattice column 1. The two limiting rods 2 are perpendicular to each other. The four connecting rods have several vertically penetrating pin holes spaced evenly along their axial direction. The distance between the two outermost limiting holes on each connecting rod is greater than the sum of the width of the lattice column 1 and the width of the two connecting rods. The connecting rods rest on the two limiting rods 2, and the four connecting rods are respectively set close to the four sides of the lattice column 1. The four connecting rods include two horizontally arranged connecting rods 3 and two vertically arranged connecting rods 4. The vertically arranged connecting rods 4 are set on the same side end of the two horizontally arranged connecting rods 3. The two ends of the vertically arranged connecting rods 4 are respectively provided with U-shaped elbows for the horizontally arranged connecting rods 3 to extend into. The horizontally arranged connecting rods 3 are provided with first pins 5 to prevent the corresponding vertically arranged connecting rods 4 from horizontally shifting. Each of the four connecting rods is provided with a pair of second pins 6 to prevent the corresponding limiting rods 2 from horizontally shifting. The pallet mounting and leveling mechanism 9 is installed on one of the connecting rods through the telescopic mechanism 7. The telescopic mechanism 7 is horizontally arranged, and the horizontal position of the pallet mounting and leveling mechanism 9 can be adjusted through the telescopic mechanism 7. The pallet 8 is installed on the pallet mounting and leveling mechanism 9. The pallet 8 is provided with a circular level bubble 10. The pallet mounting and leveling mechanism 9 makes the pallet 8 horizontal. This invention solves the problem of unstable installation and data distortion caused by soft soil at the bottom of the pit by mounting the column-mounted 3D scanning device on the lattice column 1. By setting the column-mounted 3D scanning device at the required height on the lattice column 1, the device can be installed at various heights on the lattice column 1, solving the problem that conventional scanning can only scan at the top and bottom of the pit, and that it is impossible to set up monitoring points in the middle depth of the pit.

[0030] In this embodiment, the lattice column 1 is formed by connecting four angle steels 11 through several connecting pieces 12, and the longitudinally arranged limiting rod 2 rests on the top of the connecting piece 12 at the required height.

[0031] Preferably, in the above-mentioned column-mounted three-dimensional scanning device, the longitudinally arranged limiting rod 2 has an upward-opening slot 21 in the middle, and the transversely arranged limiting rod 2 has a downward-opening slot 21 in the middle. The slot 21 of the transversely arranged limiting rod 2 is connected to the slot 21 of the longitudinally arranged limiting rod, so that the longitudinally arranged limiting rod 2 and the transversely arranged limiting rod 2 are horizontally intersecting and their upper surfaces are flush. In this way, four connecting rods can be stably set on two limiting rods 2.

[0032] Preferably, in the above-mentioned column-mounted 3D scanning device, the tray mounting and leveling mechanism 9 includes a base 91 and three bolt assemblies. Each bolt assembly includes a bolt 92 and a corresponding nut (not shown). The base 91 is a horizontally set triangular plate. The shape and size of the tray 8 are the same as those of the base 91. The three corners of the base 91 and the three corners of the tray 8 are respectively provided with bolt 92 holes that match the bolt 92. The bolts 92 of the three bolt assemblies pass through the corresponding bolt 92 holes on the tray 8 and the corresponding bolt 92 holes on the base 91 in sequence and are then locked by the corresponding nuts. By rotating the three bolts 92, the height position of the three corners of the tray 8 is adjusted so that the tray 8 is in a horizontal state.

[0033] Preferably, in the above-mentioned column-mounted 3D scanning device, the telescopic mechanism 7 includes a cylinder 71 and a threaded rod 72. The cylinder 71 has an internal thread that matches the threaded rod 72. The cylinder 71 is horizontally positioned, with one end fixedly connected to one of the connecting rods, and the other end threadedly connected to one end of the threaded rod 72. The other end of the threaded rod 72 is fixedly connected to the tray mounting and leveling mechanism 9. By rotating the threaded rod 72, the extension length of the threaded rod 72 relative to the cylinder 71 can be adjusted, thereby adjusting the horizontal position of the tray mounting and leveling mechanism 9 and the tray 8 on it, facilitating 3D scanning.

[0034] Preferably, in the above-mentioned column-mounted three-dimensional scanning device, the limiting rod 2 is set at different height positions of the lattice column 1 as needed to realize scanning of different height positions of the foundation pit, which solves the problem that conventional scanning can only scan the top and bottom of the pit and cannot set up monitoring points in the middle depth of the foundation pit.

[0035] Please continue reading. Figures 1 to 5 This embodiment discloses a column-attached 3D scanning method, which uses the column-attached 3D scanning device described above. The method includes the following steps:

[0036] Step 1: Insert one limiting rod 2 horizontally longitudinally into the lattice column 1 at the required height. Insert another limiting rod 2 horizontally transversely into the lattice column 1, such that the two ends of the longitudinally positioned limiting rod 2 extend from opposite sides of the lattice column 1, and the two ends of the transversely positioned limiting rod 2 extend from the opposite side of the lattice column 1. The transversely positioned limiting rod 2 rests horizontally above the longitudinally positioned limiting rod 2, and is perpendicular to the longitudinally positioned limiting rod 2. Place the four connecting rods on the two limiting rods 2, with the four connecting rods tightly against the four sides of the lattice column 1. The four connecting rods have several vertically penetrating pin holes evenly spaced along their axial direction. The distance between the two outermost limiting holes on the connecting rod is greater than the width of the lattice column 1 and the distance between the two outermost limiting holes. The sum of the widths of the connecting rods, the four connecting rods include two horizontally arranged connecting rods 3 and two vertically arranged connecting rods 4. The vertically arranged connecting rods 4 are arranged on the same side end of the two horizontally arranged connecting rods 3. The two ends of the vertically arranged connecting rods 4 are respectively provided with U-shaped elbows for the horizontally arranged connecting rods 3 to extend into. The horizontally arranged connecting rods 3 are provided with first pins 5 to prevent the corresponding vertically arranged connecting rods 4 from horizontally shifting. The four connecting rods are respectively provided with a pair of second pins 6 to prevent the corresponding limiting rods 2 from horizontally shifting. The pallet mounting and leveling mechanism 9 is mounted on one of the connecting rods through the telescopic mechanism 7. The telescopic mechanism 7 is horizontally arranged. The pallet 8 is mounted on the pallet mounting and leveling mechanism 9. The pallet 8 is provided with a circular level bubble 10.

[0037] Step 2: Adjust the horizontal position of the tray mounting and leveling mechanism 9 using the telescopic mechanism 7;

[0038] Step 3: Adjust the tray installation leveling mechanism 9 to center the circular level bubble 10, thereby making the tray 8 horizontal.

[0039] Step 4: Install the 3D scanner base onto tray 8, level it, and then scan the foundation pit.

[0040] This invention solves the problem of unstable installation and data distortion caused by soft soil at the bottom of the pit, by mounting the column-mounted 3D scanning device on the lattice column 1. By setting the column-mounted 3D scanning device at the required height on the lattice column 1, it is possible to install the device at various heights on the lattice column 1, thus solving the problem that conventional scanning can only scan the top and bottom of the pit, and cannot establish monitoring points in the middle depth of the pit.

[0041] Preferably, in the above-mentioned column-attached three-dimensional scanning method, the longitudinally arranged limiting rod 2 has an upward-opening slot 21 in the middle, and the transversely arranged limiting rod 2 has a downward-opening slot 21 in the middle. The slot 21 of the transversely arranged limiting rod 2 is connected to the slot 21 of the longitudinally arranged limiting rod, so that the longitudinally arranged limiting rod 2 and the transversely arranged limiting rod 2 are horizontally intersecting and their upper surfaces are flush. In this way, four connecting rods can be stably set on two limiting rods 2.

[0042] Preferably, in the above-described column-mounted 3D scanning method, the tray mounting and leveling mechanism 9 includes a base 91 and three bolt assemblies. Each bolt assembly includes a bolt 92 and a corresponding nut. The base 91 is a horizontally positioned triangular plate. The shape and size of the tray 8 are consistent with the base 91. Bolt 92 holes matching the bolts 92 are correspondingly provided at the three corners of the base 91 and the three corners of the tray 8. The bolts 92 of the three bolt assemblies pass sequentially through the corresponding bolt 92 holes on the tray 8 and the base 91, and are then locked by the corresponding nuts. By rotating the three bolts 92, the height position of the three corners of the tray 8 is adjusted, so that the tray 8 is in a horizontal state. By rotating the threaded rod 72, the extension length of the threaded rod 72 relative to the cylinder 71 can be adjusted, thereby adjusting the horizontal position of the tray mounting and leveling mechanism 9 and the tray 8 on it, facilitating 3D scanning.

[0043] Preferably, in the above-described column-attached 3D scanning method, the telescopic mechanism 7 includes a cylinder 71 and a threaded rod 72. The cylinder 71 has an internal thread that matches the threaded rod 72. The cylinder 71 is horizontally positioned, with one end fixedly connected to one of the connecting rods, and the other end threadedly connected to one end of the threaded rod 72. The other end of the threaded rod 72 is fixedly connected to the tray mounting and leveling mechanism 9. By rotating the threaded rod 72, the extension length of the threaded rod 72 relative to the cylinder 71 can be adjusted, thereby adjusting the horizontal position of the tray mounting and leveling mechanism 9 and the tray 8 on it, facilitating 3D scanning.

[0044] Preferably, in the above-mentioned column-attached three-dimensional scanning method, the limiting rod 2 is set at different height positions of the lattice column 1 as needed to realize the scanning of different height positions of the foundation pit, which solves the problem that conventional scanning can only scan the top and bottom of the pit and cannot set up monitoring points in the middle depth of the foundation pit.

[0045] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A column-mounted three-dimensional scanning device, characterized in that, The column-mounted 3D scanning device is installed on the lattice column at the required height. The device includes two limiting rods, four connecting rods, several first pins, several second pins, a telescopic mechanism, a tray for mounting the 3D scanner, and a tray mounting and leveling mechanism. The two limiting rods include one longitudinally positioned limiting rod and one laterally positioned limiting rod. The longitudinally positioned limiting rod is horizontally inserted into the lattice column, with its two ends extending from opposite sides of the column. The laterally positioned limiting rod rests horizontally above the longitudinally positioned limiting rod. The two ends of the horizontally arranged limiting rods extend from opposite sides of the lattice column, and the two limiting rods are perpendicular to each other. The four connecting rods have several vertically penetrating pin holes evenly spaced along their axial direction. The distance between the two outermost limiting holes on each connecting rod is greater than the sum of the width of the lattice column and the width of the two connecting rods. The four connecting rods rest on the two limiting rods and are respectively set tightly against the four sides of the lattice column. The four connecting rods include two horizontally arranged connecting rods and two vertically arranged connecting rods. The vertically arranged connecting rods are set on... On the same side of the two horizontally arranged connecting rods, the two ends of the longitudinally arranged connecting rod are respectively provided with U-shaped bends for the horizontally arranged connecting rods to extend into. The horizontally arranged connecting rods are provided with a first pin to prevent the corresponding longitudinally arranged connecting rod from horizontally shifting. Each of the four connecting rods is provided with a pair of second pins to prevent the corresponding limiting rod from horizontally shifting. The pallet mounting and leveling mechanism is mounted on one of the connecting rods via the telescopic mechanism. The telescopic mechanism is horizontally arranged, and its horizontal position can be adjusted via the telescopic mechanism. The pallet is mounted on... The pallet mounting and leveling mechanism includes a circular level bubble on the pallet, which ensures the pallet is level. The longitudinally positioned limiting rod has an upward-opening slot in its center, and the transversely positioned limiting rod has a downward-opening slot in its center. The slots of the transversely positioned limiting rods align with the slots of the longitudinally positioned limiting rods, ensuring that the longitudinal and transverse limiting rods are horizontally intersecting and their upper surfaces are flush. The lattice column is composed of four angle steels connected by several connecting pieces, with the longitudinally positioned limiting rod resting on top of the connecting pieces at the required height.

2. The column-mounted three-dimensional scanning device as described in claim 1, characterized in that, The pallet mounting and leveling mechanism includes a chassis and three bolt assemblies. Each bolt assembly includes a bolt and a corresponding nut. The chassis is a horizontally set triangular plate. The shape and size of the pallet are the same as those of the chassis. Bolt holes matching the bolts are opened at the three corners of the chassis and the three corners of the pallet. The bolts of the three bolt assemblies pass through the corresponding bolt holes on the pallet and the corresponding bolt holes on the chassis in sequence and are then locked by the corresponding nuts. The height position of the three corners of the pallet is adjusted by rotating the three bolts, so that the pallet is in a horizontal state.

3. The column-mounted three-dimensional scanning device as described in claim 1, characterized in that, The telescopic mechanism includes a cylinder and a threaded rod. The cylinder has an internal thread that matches the threaded rod. The cylinder is horizontally positioned. One end of the cylinder is fixedly connected to one of the connecting rods. The other end of the cylinder is threadedly connected to one end of the threaded rod. The other end of the threaded rod is fixedly connected to a tray mounting and leveling mechanism.

4. The column-mounted three-dimensional scanning device as described in claim 1, characterized in that, As needed, the limiting rods can be set at different height positions of the lattice column to achieve scanning of different height positions of the foundation pit.

5. A column-mounted three-dimensional scanning method for any one of the column-mounted three-dimensional scanning devices as described in claims 1-4, characterized in that, Includes the following steps: Step 1: Insert one limiting rod horizontally into the lattice column at the required height along the longitudinal direction. Insert another limiting rod horizontally into the lattice column along the transverse direction, so that the two ends of the longitudinal limiting rod extend from opposite sides of the lattice column, and the two ends of the transverse limiting rod extend from opposite sides of the lattice column. The transverse limiting rod rests horizontally above the longitudinal limiting rod, and is perpendicular to the longitudinal limiting rod. Place the four connecting rods on the two limiting rods, with each connecting rod tightly against the four sides of the lattice column. Each connecting rod has several vertically penetrating pin holes evenly spaced along its axial direction. The distance between the two outermost limiting holes on each connecting rod is greater than the sum of the width of the lattice column and the width of the two connecting rods. The four connecting rods include two transverse connecting rods and two longitudinal connecting rods. The longitudinal connecting rods are located on the same side of the two transverse connecting rods. The connecting rods are provided with U-shaped bends at both ends for the horizontally positioned connecting rods to extend into. The horizontally positioned connecting rods have a first pin to prevent horizontal displacement of the corresponding vertically positioned connecting rods. Each of the four connecting rods has a pair of second pins to prevent horizontal displacement of the corresponding limiting rods. The pallet mounting and leveling mechanism is mounted on one of the connecting rods via the telescopic mechanism. The telescopic mechanism is horizontally positioned, and the pallet is mounted on the pallet mounting and leveling mechanism. The pallet has a circular level bubble. The vertically positioned limiting rods have upward-opening slots in their middle sections, and the horizontally positioned limiting rods have downward-opening slots in their middle sections. The slots of the horizontally positioned limiting rods align with the slots of the vertically positioned limiting rods, ensuring that the vertically and horizontally positioned limiting rods are horizontally intersecting and their upper surfaces are flush. The lattice column is composed of four angle steels connected by several connecting pieces. The vertically positioned limiting rods rest on the top of the connecting pieces at the required height. Step 2: Adjust the horizontal position of the pallet mounting and leveling mechanism using the telescopic mechanism; Step 3: Adjust the pallet installation leveling mechanism to center the circular level bubble, thereby making the pallet level. Step 4: Install the 3D scanner base onto the tray, level it, and then scan the pit.

6. The column-attached three-dimensional scanning method as described in claim 5, characterized in that, The pallet mounting and leveling mechanism includes a chassis and three bolt assemblies. Each bolt assembly includes a bolt and a corresponding nut. The chassis is a horizontally set triangular plate. The shape and size of the pallet are the same as those of the chassis. Bolt holes matching the bolts are opened at the three corners of the chassis and the three corners of the pallet. The bolts of the three bolt assemblies pass through the corresponding bolt holes on the pallet and the corresponding bolt holes on the chassis in sequence and are then locked by the corresponding nuts. The height position of the three corners of the pallet is adjusted by rotating the three bolts, so that the pallet is in a horizontal state.

7. The column-attached three-dimensional scanning method as described in claim 5, characterized in that, The telescopic mechanism includes a cylinder and a threaded rod. The cylinder has an internal thread that matches the threaded rod. The cylinder is horizontally positioned. One end of the cylinder is fixedly connected to one of the connecting rods. The other end of the cylinder is threadedly connected to one end of the threaded rod. The other end of the threaded rod is fixedly connected to a tray mounting and leveling mechanism.

8. The column-attached three-dimensional scanning method as described in claim 5, characterized in that, As needed, the limiting rods can be set at different height positions of the lattice column to achieve scanning of different height positions of the foundation pit.

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