Floor axis survey lofting method without leaving pay-off hole

Abstract

A floor axis survey lofting method without leaving a pay-off hole comprises the following steps: on the first floor, establishing a user-defined coordinate system according to a floor plane graph to obtain an axis intersection point and a coordinate of the axis intersection point; erecting the total station on the first layer, and building the total station by using the intersection point of the axes and the coordinates of the intersection point; erecting a plumb bob instrument with a prism on the first floor, sequentially aligning the plumb bob instrument with the prism to the plurality of pipeline reserved holes of the projection and measurement floor, and respectively measuring the axis coordinates of the plurality of pipeline reserved holes through a total station; the method comprises the following steps: sequentially mounting special laser targets for casing pipes on the casing pipes of a plurality of pipeline reserved holes of an upper-layer construction floor, and aligning the centers of the targets with plumb lines of corresponding plumb bobs with prisms and fixing the plumb bobs; based on the multiple pipeline reserved holes and the axis coordinates of the pipeline reserved holes, the total station is erected again on the upper layer, and station building is completed; a total station is used for sequentially lofting intersection points of axes of a plurality of user-defined coordinate systems of an upper-layer construction floor, and then the obtained user-defined axes are shifted to obtain a drawing design axis. The problems of potential safety hazards, follow-up repair, leakage and the like caused by the fact that a special pay-off hole needs to be formed in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the field of building engineering surveying technology, and more specifically, to a method for measuring and setting out floor axes without leaving layout holes. Background Technology

[0002] As is generally known, floor axis measurement and layout is a technique in building engineering to accurately mark the axis positions on the design drawings to the construction site.

[0003] Currently, the practice of measuring and setting out floor axes usually requires reserving multiple setting-out holes on each floor to project the axis from the lower floor to the upper floor using a plumb line, thus achieving the vertical transfer of the axis.

[0004] The drawback of this existing practice is that it results in numerous and varied construction openings on the floors, posing safety hazards, making later repairs cumbersome, and increasing the risk of leaks and other construction quality problems. Especially for large buildings and complex structures, it often suffers from low measurement efficiency and large errors.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes a method for measuring and setting out floor axes without requiring dedicated layout holes, which can solve the problems of safety hazards, subsequent repairs, and leakage caused by the need to create dedicated layout holes in existing technologies.

[0007] A method for measuring and setting out floor axes without leaving laying holes according to the present invention includes the following steps:

[0008] S10. On the ground floor, establish a custom coordinate system based on the floor plan to obtain multiple intersection points of axes, and calculate their coordinates respectively.

[0009] S20. Set up the total station on the first floor and use the intersection of the above axes and their coordinates to establish the total station.

[0010] S30. Set up the plumb bob with prism on the first floor and align it with multiple reserved pipe openings on the floor to be measured in sequence. Then, use a total station to measure the axial coordinates of the multiple reserved pipe openings.

[0011] S40. Install special laser targets for the pipes on the sleeves of multiple pre-reserved pipe openings on the upper construction floor in sequence, and align the center of the targets with the plumb line of the corresponding prism plumb bob and fix them.

[0012] S50. Based on the coordinates of multiple reserved pipe openings and their axes, a total station is re-erected on the upper level and the station is established.

[0013] S60. Using a total station, the intersection points of multiple custom coordinate system axes on the upper construction floor are laid out sequentially to obtain the custom axes of the custom coordinate system. The custom axes are then offset to obtain the design axes in the drawings.

[0014] According to some embodiments of the present invention, step S10 specifically includes:

[0015] After the axis layout is completed at the ground floor, four custom cross axes are used to form a custom coordinate system. The axis of this custom coordinate system is offset from the axis of the design drawing by a preset obstacle avoidance distance. The four intersection points of the axes are set as points A, B, C and D in sequence. At the same time, the coordinates of A, B, C and D are calculated using CAD.

[0016] According to some embodiments of the present invention, step S20 specifically includes:

[0017] Set up the total station at point A on the first floor and the prism at point B on the first floor. After the total station and prism are centered and leveled, input the coordinates of the station point A into the total station to complete the station point setting. Input the coordinates of the backsight point B into the total station. Aim the total station lens at the backsight prism to complete the backsight point setting. After both the station point and the backsight point are set, place the prism at points C and D for a check to ensure that the error meets the measurement requirements.

[0018] According to some embodiments of the present invention, in step S30, the prism plumb bob includes a laser plumb bob and a prism lens fixedly disposed on the side of the laser plumb bob, and the prism lens is provided with centering marks around its perimeter.

[0019] According to some embodiments of the present invention, step S30 specifically includes:

[0020] Step S31: After the total station is set up, the prism plumb bob is set up on the ground floor corresponding to the reserved opening of the pipeline. After the setup is completed, the centering device is placed directly below the prism plumb bob, so that the mark on the centering device is aligned with the plumb line of the prism plumb bob.

[0021] Step S32: Keep the total station at point A on the first floor, rotate the total station lens so that the vertical scale of the total station crosshairs is aligned with the mark on the centering device, and lock the total station horizontal stop screw after alignment.

[0022] Step S33: Continue to rotate the total station lens and the plumb bob with prism so that the centering mark of the prism lens of the plumb bob with prism is aligned with the crosshairs of the total station. After alignment, lock the vertical stop screw of the total station.

[0023] Step S34: Set the prism constant of the total station according to the prism parameters of the prism plumb bob, and use the total station to measure and record the vertical plane coordinates of the prism plumb bob.

[0024] The floor has three reserved pipe openings, and their corresponding positions on the first floor are defined as points E, F, and G, respectively. The plumb line plane coordinates corresponding to each reserved pipe opening are measured through the above steps S31 to S34, namely the E coordinate, F coordinate, and G coordinate.

[0025] According to some embodiments of the present invention, step S40 specifically includes:

[0026] Step S41: Install a special laser target for the casing at the casing position of the pre-reserved pipe opening on the upper floor, turn on the plumb bob with prism at the corresponding position on the first floor, align the center of the target with the plumb line and fix it, thereby transferring the coordinate positions of points E, F and G on the first floor to the upper floor.

[0027] Step S42: Set up a total station at point E on the upper floor and a prism at point F. Use the coordinates of E measured on the first floor as the station point and the coordinates of F as the backsight point to complete the total station setup. After the station setup is completed, place the prism at point G to verify the coordinates and ensure that the error is within the allowable range.

[0028] According to some embodiments of the present invention, in step S50, the special laser target for the sleeve includes a laser target and a sleeve connector. The laser target has a plurality of position adjustment holes arranged in a ring array. The sleeve connector includes a right-angle clamp, a screw and nut assembly, a nut and washer assembly and a fastening bolt.

[0029] The first side of the right-angle clamp fits against the sleeve wall, and the second side fits against the bottom surface of the laser target; the screw and nut assembly consists of a screw and a square nut connected vertically, with their axes perpendicular to each other; at the position adjustment hole, the screw and nut washer assembly connect the first side clamp to the laser target; the fastening bolt and the square nut fasten the first side clamp to the sleeve wall.

[0030] According to some embodiments of the present invention, step S60 specifically includes:

[0031] Using a total station, points A, B, C, and D on the upper construction floor are laid out sequentially to obtain four custom coordinate system axes. These axes are then offset by a preset obstacle avoidance distance to obtain the design axes in the drawings. The remaining axes are then laid out sequentially.

[0032] According to the present invention, a method for measuring and setting out floor axes without leaving pre-drilled holes can utilize the numerous pre-drilled pipe openings (including sleeves) already present in the building floors. By using these pre-drilled pipe openings as vertical projection openings for the axis, and employing a total station, a plumb bob with a prism, and a laser target specifically for sleeves, the axis position is quickly determined using a coordinate method based on the coordinates of the axis intersection points in a custom coordinate system and the vertical plane coordinates of the pre-drilled pipe openings. Therefore, the floor axis measurement and sampling method of the present invention eliminates the need for pre-drilled holes on each floor, solving a series of problems arising from this. Furthermore, the specially designed plumb bob with a prism and a laser target specifically for sleeves ensures measurement accuracy. Especially for large buildings and complex structures, the present invention establishes a custom Cartesian coordinate system and combines it with CAD drawing software technology to quickly calculate the coordinates of various complex axes. Measurement and setting out of various complex buildings can be quickly completed using a total station. The total station's data transmission function can also be used to directly transfer coordinate files calculated by CAD to the total station, which can be retrieved directly when needed, greatly avoiding errors caused by manual calculation and data input.

[0033] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] Figure 1 This is a schematic diagram of the ground floor of a floor axis measurement and layout method according to some embodiments of the present invention, which mainly shows a custom coordinate system and the position corresponding to the reserved opening for the pipe.

[0036] Figure 2 This is a schematic diagram illustrating the combined use of a total station and a plumb bob with a prism in some embodiments of the present invention for measuring and setting out floor axes.

[0037] Figure 3 This is a schematic diagram illustrating the combined use of a prism plumb bob and a centering device in some embodiments of the floor axis measurement and layout method of the present invention.

[0038] Figure 4 This is a schematic diagram of the centering device for aiming a total station at a plumb bob with a prism in some embodiments of the floor axis measurement and layout method of the present invention.

[0039] Figure 5 This is a schematic diagram of a total station aiming at the prism lens of a plumb bob with a prism in a floor axis measurement and layout method according to some embodiments of the present invention.

[0040] Figure 6 and Figure 7This is a schematic diagram of the structure of a plumb bob with a prism used in some embodiments of the floor axis measurement and layout method of the present invention.

[0041] Figure 8 and Figure 9 This is a schematic diagram of the structure of the special laser target for the sleeve used in the floor axis measurement and layout method of some embodiments of the present invention.

[0042] Figure 10 and Figure 11 This is a schematic diagram of the sleeve connector used in the floor axis measurement and layout method of some embodiments of the present invention.

[0043] Meaning of the labels in the attached diagram:

[0044] 1-Total station;

[0045] 2-Plumb bob with prism;

[0046] 21-Laser plumb bob; 211-Prism lens; 212-Centering mark;

[0047] 22-Centering device; 221-Square timber; 222-Nail;

[0048] 3-Laser target for sleeve;

[0049] 31-Laser target; 31-1-Position adjustment hole;

[0050] 32-Sleeve connector; 321-Right-angle clamp; 3211-First side clamp; 3212-Second side clamp; 322-Screw and nut assembly; 3221-Screw; 3222-Square nut; 323-Nut and washer assembly; 324-Fasting bolt;

[0051] 4-Sleeve; 4-1-Pipe pre-reserved opening;

[0052] 41 - Casing wall;

[0053] X1 is the first custom X-axis, X2 is the second custom X-axis, Y1 is the first custom Y-axis, and Y2 is the second custom Y-axis. Detailed Implementation

[0054] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0055] Please refer to the following: Figures 1-11 The specific process of the floor axis measurement and layout method without leaving a layout hole according to the present invention is described in detail.

[0056] The present invention provides a method for measuring and setting out floor axes without leaving a setting hole, including steps S10, S20, S30, S40, S50 and S60.

[0057] In this embodiment of the invention, step S10 is: on the ground floor, a custom coordinate system is established according to the floor plan to obtain multiple axis intersection points, and their coordinates are calculated using CAD.

[0058] For specific implementation, please refer to Figure 1 Step S10 in this embodiment of the invention may include:

[0059] After laying out the axes at the ground floor, four custom cross axes are used to form a custom coordinate system, namely X1, X2, Y1 and Y2 on the drawing. X1 is the first custom X-axis, X2 is the second custom X-axis, Y1 is the first custom Y-axis, and Y2 is the second custom Y-axis. The axes of this custom coordinate system are offset from the design axes on the drawing by a preset obstacle avoidance distance. The intersection points of the four axes are set as points A, B, C and D, respectively, and the coordinates of A, B, C and D are calculated.

[0060] More specifically, a total station can be used to complete the layout of the first floor axis: First, the total station needs to be placed on the control point, and then the location of the point to be laid out is determined by measurement and calculation based on the coordinates or angles on the design drawings, and marked on the actual site.

[0061] More specifically, the preset obstacle avoidance distance can be set to 1000mm to avoid pillars and facilitate on-site measurements.

[0062] During operation, the coordinates of point A can be set as (0, 0), then the coordinates of point B are (0, 20), the coordinates of point C are (10, 20), and the coordinates of point D are (10, 0).

[0063] In this embodiment of the invention, step S20 is: setting up the total station 1 on the first floor and using the intersection of the above-mentioned axes and their coordinates to establish the station of the total station 1.

[0064] In specific implementation, step S20 of this embodiment of the invention may include:

[0065] Set up total station 1 at point A on the first floor and prism at point B on the first floor. After aligning and leveling total station 1 and prism, input the coordinates of station A on total station 1 to complete the station setup. Input the coordinates of backsight point B on total station 1. Aim the lens of total station 1 at the backsight prism to complete the backsight point setup. After both the station and backsight points are set, place prism at points C and D for a check to confirm that the error meets the measurement requirements.

[0066] In this embodiment of the invention, step S30 is: setting up a plumb bob with a prism on the first floor and aligning it with multiple pipe openings on the floor to be measured in sequence, and measuring the axial coordinates of the multiple pipe openings using a total station 1.

[0067] For specific implementation, please refer to Figure 6 and Figure 7 In step S30 of this embodiment of the invention, the prism plumb bob may include a laser plumb bob 21 and a prism lens 211 fixedly disposed on the side of the laser plumb bob 21. The prism lens 211 is provided with centering marks 212 around its perimeter.

[0068] In specific implementation, step 30 of this embodiment of the invention may include:

[0069] Step S31: After the total station 1 is set up, the plumb bob with prism is set up on the ground floor corresponding to the reserved opening of the pipeline. After the setup is completed, the centering device 22 is placed directly below the plumb bob with prism so that the mark on the centering device 22 is aligned with the plumb line of the plumb bob with prism.

[0070] More specifically, refer to Figure 3 A simple centering device 22 can be a square piece of wood 221 with nails 222. The center of the nail is used as a marker point. When in use, the center of the nail is aligned with the plumb line of the plumb bob with a prism.

[0071] Step S32: With the total station 1 positioned at point A on the first floor, rotate the lens of the total station 1 so that the vertical scale of the crosshairs is aligned with the marked point on the centering device 22. Specifically, the vertical scale of the total station crosshairs should be aligned with the center of the nail (see...). Figure 4 After alignment, lock the total station's horizontal stop screw 1.

[0072] Step S33: Continue to rotate the total station lens 1 and the plumb bob with prism. Specifically, the total station operator can direct the personnel to rotate the plumb bob horizontally while simultaneously rotating the total station lens up and down, so that the centering mark 212 of the prism lens 211 of the plumb bob with prism is aligned with the crosshairs of the total station 1 (see...). Figure 5 After alignment, lock the total station's vertical stop screw 1.

[0073] In order to achieve accurate measurement, steps S32 and S33 can be used to ensure that the total station 1 is aimed at the center of the prism in both the vertical and horizontal directions. This allows the total station 1 to aim at the plumb line and accurately at the center line of the plumb bob with prism, thus facilitating the accurate acquisition of the plane coordinates of the plumb line.

[0074] Step S34: Set the prism constant of the total station 1 according to the prism parameters of the prism plumb bob, and use the total station 1 to measure and record the vertical plane coordinates of the prism plumb bob.

[0075] The floor has three pre-reserved pipe openings, which are designated as points E, F, and G on the ground floor (see [reference]). Figure 1 The plumb line plane coordinates corresponding to each reserved opening of the pipeline are obtained through the above steps S31 to S34, namely the E coordinate, F coordinate, and G coordinate.

[0076] In this embodiment of the invention, step S40 is: sequentially installing special laser targets 3 for the casings 4 on the multiple pre-reserved pipe openings on the upper construction floor, and aligning the center of the targets with the plumb line of the corresponding prism plumb bob and fixing them.

[0077] In specific implementation, step S40 of this embodiment of the invention may include:

[0078] Step S41: Install the sleeve-specific laser target 3 at the sleeve 4 position of the pre-reserved opening in the upper pipeline (see...). Figure 2 and Figure 8 ), turn on the plumb bob with prism 2 at the corresponding position on the first floor, align the center of the target with the plumb line and fix it, thereby transferring the coordinates of points E, F and G on the first floor to the upper floor.

[0079] Step S42: Set up total station 1 at point E on the upper floor and prism at point F. Use the coordinates of E measured on the first floor as the station point and the coordinates of F as the backsight point to complete the station setup of total station 1. After the station setup is completed, place prism at point G to check the coordinates and ensure that the error is within the allowable range.

[0080] In this embodiment of the invention, step S50 is: based on multiple reserved pipe openings and their axis coordinates, a total station 1 is re-erected on the upper layer and the station is established.

[0081] For specific implementation, please refer to Figure 10 and Figure 11 In step S50 of this embodiment of the invention, the special laser target 3 for the sleeve may include a laser target 31 and a sleeve connector 32. The laser target 31 has a plurality of position adjustment holes 31-1 arranged in a ring array. Specifically, the length of the position adjustment holes 31-1 is consistent with the radial direction of the sleeve 4. The sleeve connector 32 includes a right angle clamp 321, a screw and nut assembly 322, a nut washer assembly 323 and a fastening bolt 324.

[0082] The first side clamp 3211 of the right-angle clamp fits against the sleeve wall 41, and the second side clamp 3212 fits against the bottom surface of the laser target 31. The screw and nut assembly 322 is formed by connecting the screw 3221 and the square nut 3222 vertically, with their axes perpendicular to each other. At the position adjustment hole 31-1, the screw 3221 and the nut and washer assembly 323 cooperate to connect the first side clamp 3211 to the laser target 31. Specifically, the nut and washer assembly 323 includes two nuts and a washer, both sleeved on the screw 3221. In use, the upper nut and washer are located above the laser target 31, and the lower nut is located below the laser target 31. Rotating the upper and lower nuts can press the laser target 31 and the right-angle clamp 321 together. The fastening bolt 324 cooperates with the square nut 3222 to fasten the first side clamp 3211 to the sleeve wall 41.

[0083] In use, the laser target 3 for the casing is first movably installed on the casing 4 at the pre-reserved opening of the pipe. At this time, the casing wall 41 is located between the first side clamp 3211 and the fastening bolt 324 and is in an unlocked state, while the laser target 31 is located between the second side clamp 3212 and the nut washer assembly 323 and is also in an unlocked state. As the screw 3221 of the screw-nut assembly 322 moves within the position adjustment hole 31-1, since the direction of movement is consistent with the radial direction of the casing 4, it can be used for casings 4 of different sizes. At the same time, this movement method can also adjust the laser target 3. The center position of 1 is used to aim at the incoming laser point. During movement, when the inner side of the sleeve wall 41 is tightly attached to the right angle clamp 321, the fastening bolt 324 is then operated to press the sleeve wall 41 from the outside, thus locking the right angle clamp 321 to the sleeve wall 41. After that, since the laser target 31 is placed on the second side clamp 3212, the nut washer assembly 323 is operated to clamp it, thus completing the locking of the right angle clamp 321 to the laser target 31. At this point, the installation and fixation of the sleeve-specific laser target 3 on the sleeve 4 is achieved.

[0084] In this embodiment of the invention, step S60 is: using a total station 1 to sequentially lay out the intersection points of multiple custom coordinate system axes on the upper construction floor to obtain custom axes of the custom coordinate system, and offsetting the custom axes to obtain the design axes of the drawings.

[0085] In specific implementation, step S60 of this embodiment of the invention may include:

[0086] Using a total station 1, points A, B, C, and D on the upper construction floor are laid out sequentially to obtain four custom coordinate system axes. These axes are then offset by a preset obstacle avoidance distance to obtain the design axes in the drawings. More specifically, the offset can be 1000mm.

[0087] It is understood that, based on steps S10-S60 of the present invention, the remaining axes of the floor can be laid out sequentially.

[0088] In summary, the floor axis measurement and layout method of this invention firstly, based on steps S10-S30, and using a total station 1 and a plumb bob with a prism 2, the coordinates of three existing pipe openings 4-1 at the corresponding positions on the first floor are measured, namely the E coordinate, F coordinate, and G coordinate. At the same time, points E, F, and G can be projected onto the upper construction floor.

[0089] Then, based on steps S40-S60, the special laser target 3 for the casing is used to receive the E, F and G points on the upper construction floor. Then, the total station 1 is used to obtain the axis coordinates and position of the custom coordinate system on the upper construction floor through the E coordinate, F coordinate and G coordinate. Finally, the required design axis of the drawing is obtained by offsetting.

[0090] Due to the need for water and electricity installation, buildings typically have numerous pre-reserved pipe openings 4-1 with embedded sleeves 4 on each floor. The floor axis measurement and layout method of this invention utilizes these existing pipe openings 4-1 as vertical projection openings for the axis, achieving rapid and accurate measurement and layout of the floor axis using the aforementioned process. Because it eliminates the need for specially reserved layout holes on each floor, subsequent repairs are avoided, and safety hazards and leakage problems are eliminated.

[0091] In summary, the floor axis measurement and layout method of the present invention, based on solving the problems of the prior art, can produce at least the following technical advantages:

[0092] 1) This invention improves measurement efficiency by establishing a custom Cartesian coordinate system, using CAD technology to quickly calculate complex coordinates, and combining it with a total station;

[0093] 2) The prism-equipped plumb bob of this invention innovatively combines a prism with a plumb line, which significantly improves the efficiency of measurement and point projection, and avoids errors caused by multiple instrument setups.

[0094] 3) The present invention is designed for a special laser target for casings with pre-reserved openings in existing pipelines. It can be moved and fixed flexibly, which can avoid the target being misaligned due to strong winds and human operation, thus improving the measurement accuracy.

[0095] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0096] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0097] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0098] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications and equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A method for measuring and setting out floor axes without leaving layout holes, characterized in that, Includes the following steps: S10. On the ground floor, establish a custom coordinate system based on the floor plan to obtain multiple intersection points of axes, and calculate their coordinates respectively. S20. Set up the total station on the first floor and use the intersection of the above axes and their coordinates to establish the total station. S30. Set up the plumb bob with prism on the first floor and align it with multiple reserved pipe openings on the floor to be measured in sequence. Then, use a total station to measure the axial coordinates of the multiple reserved pipe openings. S40. Install special laser targets for the pipes on the sleeves of multiple pre-reserved pipe openings on the upper construction floor in sequence, and align the center of the targets with the plumb line of the corresponding prism plumb bob and fix them. S50. Based on the coordinates of multiple reserved pipe openings and their axes, a total station is re-erected on the upper level and the station is established. S60. Using a total station, the intersection points of multiple custom coordinate system axes on the upper construction floor are laid out sequentially to obtain the custom axes of the custom coordinate system. The custom axes are then offset to obtain the design axes in the drawings.

2. The method for measuring and setting out floor axes without leaving laying holes according to claim 1, characterized in that, Step S10 specifically includes: After the axis layout is completed at the ground floor, four custom cross axes are used to form a custom coordinate system. The axis of this custom coordinate system is offset from the axis of the design drawing by a preset obstacle avoidance distance. The four intersection points of the axes are set as points A, B, C and D in sequence. At the same time, the coordinates of A, B, C and D are calculated using CAD.

3. The method for measuring and setting out floor axes without leaving laying holes according to claim 2, characterized in that, Step S20 specifically includes: Set up the total station at point A on the first floor and the prism at point B on the first floor. After the total station and prism are centered and leveled, input the coordinates of the station point A into the total station to complete the station point setting. Input the coordinates of the backsight point B into the total station. Aim the total station lens at the backsight prism to complete the backsight point setting. After both the station point and the backsight point are set, place the prism at points C and D for a check to ensure that the error meets the measurement requirements.

4. The method for measuring and setting out floor axes without leaving laying holes according to claim 3, characterized in that, In step S30, the prism plumb bob includes a laser plumb bob and a prism lens fixedly disposed on the side of the laser plumb bob, and the prism lens is provided with centering marks around its perimeter.

5. The method for measuring and setting out floor axes without leaving laying holes according to claim 4, characterized in that, Step S30 specifically includes: Step S31: After the total station is set up, the prism plumb bob is set up on the ground floor corresponding to the reserved opening of the pipeline. After the setup is completed, the centering device is placed directly below the prism plumb bob, so that the mark on the centering device is aligned with the plumb line of the prism plumb bob. Step S32: Keep the total station at point A on the first floor, rotate the total station lens so that the vertical scale of the total station crosshairs is aligned with the mark on the centering device, and lock the total station horizontal stop screw after alignment. Step S33: Continue to rotate the total station lens and the plumb bob with prism so that the centering mark of the prism lens of the plumb bob with prism is aligned with the crosshairs of the total station. After alignment, lock the vertical stop screw of the total station. Step S34: Set the prism constant of the total station according to the prism parameters of the prism plumb bob, and use the total station to measure and record the vertical plane coordinates of the prism plumb bob. The floor has three reserved pipe openings, and their corresponding positions on the first floor are defined as points E, F, and G, respectively. The plumb line plane coordinates corresponding to each reserved pipe opening are measured through the above steps S31 to S34, namely the E coordinate, F coordinate, and G coordinate.

6. The method for measuring and setting out floor axes without leaving laying holes according to claim 5, characterized in that, Step S40 specifically includes: Step S41: Install a special laser target for the casing at the casing position of the pre-reserved pipe opening on the upper floor, turn on the plumb bob with prism at the corresponding position on the first floor, align the center of the target with the plumb line and fix it, thereby transferring the coordinate positions of points E, F and G on the first floor to the upper floor. Step S42: Set up a total station at point E on the upper floor and a prism at point F. Use the coordinates of E measured on the first floor as the station point and the coordinates of F as the backsight point to complete the total station setup. After the station setup is completed, place the prism at point G to verify the coordinates and ensure that the error is within the allowable range.

7. The method for measuring and setting out floor axes without leaving laying holes according to claim 6, characterized in that, In step S50, the special laser target for the sleeve includes a laser target and a sleeve connector. The laser target has multiple position adjustment holes arranged in a ring array. The sleeve connector includes a right-angle clamp, a screw and nut assembly, a nut and washer assembly, and a fastening bolt. The first side clamp of the right-angle clamp is in contact with the sleeve wall, and the second side clamp is in contact with the bottom surface of the laser target; the screw and nut assembly is composed of a screw and a square nut connected vertically, and their axes are perpendicular to each other; at the position adjustment hole, the screw and the nut washer assembly cooperate to connect the first side clamp to the laser target; the fastening bolt and the square nut cooperate to fasten the first side clamp to the sleeve wall.

8. The method for measuring and setting out floor axes without leaving laying holes according to claim 6, characterized in that, Step S60 specifically includes: Using a total station, points A, B, C, and D on the upper construction floor are laid out sequentially to obtain four custom coordinate system axes. These axes are then offset by a preset obstacle avoidance distance to obtain the design axes in the drawings. The remaining axes are then laid out sequentially.

Images