A multi-layer building bottom plate embedded sleeve positioning device and positioning method

Abstract

The application relates to a multi-layer building bottom plate embedded sleeve positioning device and positioning method, and belongs to the technical field of building engineering. The device comprises a bottom layer positioning mechanism and an upper layer positioning mechanism. The bottom layer positioning mechanism is used for positioning the positions of each embedded sleeve of a bottom plate. The upper layer positioning mechanism is used for positioning the positions of each embedded sleeve of the bottom plates of more than one floor in cooperation with the bottom layer positioning mechanism. The bottom layer positioning mechanism is provided with a first coordinate system. The coordinate positions of each embedded sleeve on the bottom plate are positioned through the first coordinate system. The upper layer positioning mechanism is provided with a second coordinate system. The origins of the first coordinate system and the second coordinate system are on the same longitudinal line. The X and Y axes of the second coordinate system are opposite to the X and Y axes of the first coordinate system and are parallel to each other. The positions of the embedded sleeves on the bottom plates of more than one floor are positioned through the second coordinate system.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, specifically to a positioning device and method for pre-embedded sleeves in the foundation slab of multi-story buildings. Background Technology

[0002] Currently, pipelines in multi-story or high-rise buildings need to pass through the floor slabs of each floor. The existing technology for locating pipeline installation positions is based on the edge of the formwork during the actual construction process of each floor. The position is measured according to the dimensions specified in the design to determine the center position of the pipeline. A sleeve is pre-embedded at this center position to reserve the installation hole for the pipeline. After the main civil structure of the multi-story or high-rise building is completed, the pipeline is then installed at the reserved hole.

[0003] However, due to the large dimensional errors in the actual concrete floor slabs of the upper and lower floors, which are at least on the centimeter level, the positional errors of the reserved holes for pipes on the upper and lower floors are also at the centimeter level. As a result, the positioning accuracy of the pipes depends on the accuracy of the concrete floor slab dimensions of each floor. In the actual construction process of multi-story or high-rise buildings, this leads to large positioning errors and serious deviations in the pipe positions. As a result, it is inevitable that holes will need to be re-drilled and repositioned later, which will cause economic losses in terms of manpower and material resources, and delay the construction schedule.

[0004] To address this issue, patent application CN202110663464.0 discloses a positioning device for pre-reserved holes for pipes in multi-story buildings. The device includes a base, a stator fixed longitudinally at the center of the upper surface of the base, a rotor rotatably connected to the upper end of the stator, a level scale platform fixedly connected to the upper surface of the rotor, a laser emitting module connected to the level scale platform, a level on the upper surface of the level scale platform, a circuit control system mounted on the base, a human-machine interface device mounted on the outer surface of the base, and a laser receiving module. This invention can accurately determine the location of the pipes to be installed. Specifically, it can precisely locate the positions of pre-reserved holes for pipes on each floor sequentially during construction, with an accuracy down to the millimeter level. This eliminates rework caused by inaccurate pipe positioning and significantly reduces construction costs.

[0005] However, there are often multiple embedded sleeves on each floor. When using this equipment, the location of each embedded sleeve needs to be measured and positioned one by one. It is not possible to quickly locate the location of several embedded sleeves on the same floor in batches. In order to improve construction efficiency, it is necessary to improve the existing technology. Summary of the Invention

[0006] This invention provides a positioning device and method for pre-embedded sleeves in the foundation slab of a multi-story building, with the aim of achieving rapid batch positioning of several pre-embedded sleeves on the same floor foundation slab.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] A positioning device for embedded sleeves in the foundation slab of a multi-story building includes a bottom positioning mechanism and an upper positioning mechanism. The bottom positioning mechanism is used to locate the positions of each embedded sleeve in the foundation slab of the first floor. The upper positioning mechanism is used in conjunction with the bottom positioning mechanism to locate the positions of each embedded sleeve in the foundation slab of each floor above the first floor. The bottom positioning mechanism is provided with a first coordinate system, which is used to locate the coordinate positions of each embedded sleeve in the foundation slab of the first floor. The upper positioning mechanism is provided with a second coordinate system. The origins of the first coordinate system and the second coordinate system are on the same vertical line. The X and Y axes of the second coordinate system are vertically opposite to and parallel to the X and Y axes of the first coordinate system. The second coordinate system is used to locate the positions of the embedded sleeves in the foundation slab of each floor above the first floor.

[0009] Preferably, the bottom positioning mechanism includes a fixed base, the top of which is horizontally positioned. A cylindrical first mounting groove is located at the center of the top of the fixed base. Four second mounting grooves are arranged at 90-degree intervals on the top of the fixed base, forming concentric circles outside the first mounting groove. A first laser emitter is fixedly connected longitudinally within the first mounting groove, and a second laser emitter is fixedly connected longitudinally within the second mounting groove. The intersection of the horizontal lines connecting the longitudinal rays emitted by the two sets of opposing second laser emitters is located on the longitudinal rays emitted by the first laser emitter, forming a first coordinate system. The origin and the horizontal lines connecting the light rays emitted by the two sets of opposing second laser emitters constitute the X and Y axes of the first coordinate system, respectively. A first scale line representing the angle is provided at the top of the fixed base with the origin as the center. The position of one end of the first scale line is the 0-degree line. Multiple embedded sleeves are provided on the bottom plate. The coordinate position of each embedded sleeve is represented as follows: the horizontal line segment connecting the central axis of the embedded sleeve and the origin is the first measuring line. The coordinate position of the embedded sleeve is represented by the angle between the first measuring line and the line segment of the X-axis toward the 0-degree line and the length of the first measuring line.

[0010] Preferably, the bottom end of the bottom positioning mechanism is fixedly connected to the center position of the upper surface of a bottom plate, and the top end of the bottom positioning mechanism is kept horizontal by adjusting the posture.

[0011] Preferably, the upper positioning mechanism includes a light-transmitting column that penetrates the bottom template of the upper slab to be poured. A horizontally mounted mounting plate is connected to the bottom end of the light-transmitting column. The mounting plate is fixed to the bottom template by bolts, and the light-transmitting column is kept vertical by adjusting its posture. A first light-transmitting hole is provided at the axis of the light-transmitting column to allow light emitted by a first laser emitter to pass through. Second light-transmitting holes are provided on the column body surrounding the first light-transmitting hole to allow light emitted by four second laser emitters to pass through. The line connecting the center points of two sets of relatively opposite second light-transmitting holes intersects with the center point of the first light-transmitting hole to form the origin of a second coordinate system. The line connecting the center points of the two sets of relatively opposite second light-transmitting holes respectively forms the X and Y axes of the second coordinate system. A threaded section is provided on the upper part of the light-transmitting column, above the upper surface of the slab to be poured. A rotating seat is screwed onto the threaded section, and a second coordinate system coordinate measuring mechanism is rotatably connected to the rotating seat. The coordinate measuring mechanism positions the pre-embedded sleeves on the slab to be poured on the corresponding floor.

[0012] Preferably, the rotating seat includes an internally threaded sleeve and a fixed disk coaxially fixed to the bottom of the outer wall of the internally threaded sleeve and folded outward. The internally threaded sleeve is screwed to the threaded section. The upper surface of the fixed disk is provided with an annular guide rail coaxial with the internally threaded sleeve. The axis of the internally threaded sleeve passes through the origin of the second coordinate system. The coordinate measuring mechanism includes a rotating ring, which is coaxially sleeved on the outside of the internally threaded sleeve. The bottom end of the rotating ring is provided with an annular groove that cooperates with the annular guide rail. A third mounting groove is formed by radially inward recessing on the side wall of the rotating ring. A laser rangefinder sensor is installed in the third mounting groove. The light emitted by the laser rangefinder sensor is arranged radially along the internally threaded sleeve. An L-shaped pointer is fixedly connected to the top of the rotating ring above the opening of the third mounting groove. The L-shaped pointer has a sheet-like structure, and the bottom of the vertical section of the L-shaped pointer is fixedly connected to the top of the rotating ring. The end of the horizontal segment forms an indicator structure. The L-shaped pointer is used to indicate the angle of the light emitted by the laser rangefinder relative to the second coordinate system. The second coordinate system has one end of the X-axis as the 0 mark. The 0 mark of the second coordinate system and the 0 mark of the first coordinate system are located on the same side and coplanar with the longitudinal light emitted by the first laser emitter. The outer periphery of the light-transmitting column above the threaded segment is provided with a second scale line to mark the horizontal angle based on the 0 mark of the second coordinate system. The end of the horizontal segment of the L-shaped pointer is opposite to the second scale line. The coordinates of each embedded sleeve on the base plate to be poured are represented by the horizontal angle between the light emitted by the laser rangefinder and the line segment of the second coordinate system X-axis toward the 0 mark, and the distance of the horizontal line segment between a point on the light emitted by the laser rangefinder and the origin of the second coordinate system.

[0013] Preferably, the coordinate positions of each pre-embedded sleeve on the first layer base plate in the first coordinate system and the coordinate positions of each pre-embedded sleeve on each upper layer base plate to be poured in the second coordinate system are used to represent the position of the corresponding pre-embedded sleeve axis, and the position of the pre-embedded sleeve is determined based on the axis position.

[0014] Preferably, a rubber positioning block is also embedded in the pre-embedded sleeve. The positioning block is cylindrical, and its outer surface fits tightly with the inner surface of the pre-embedded sleeve. A reflector is provided at the upper end of the positioning block along the longitudinal direction. An axis mark is provided on the inner surface of the reflector along the longitudinal direction. The axis mark overlaps with the axis of the pre-embedded sleeve. The reflector is used in conjunction with a laser rangefinder sensor.

[0015] A positioning method for a positioning device for a pre-embedded sleeve in the foundation slab of a multi-story building includes the following steps:

[0016] Step 1: Fix the bottom positioning mechanism on the upper surface of the first-layer base plate. Adjust the posture to make the top of the bottom positioning mechanism horizontal. Determine the coordinate position of the axis of each pre-embedded sleeve on the first-layer base plate according to the drawings and the first coordinate system.

[0017] Step 2: Construct the bottom formwork for the upper slab to be poured. A hole is pre-drilled in the center of the bottom formwork, and a light-transmitting column is inserted through it. The position of the pre-drilled hole is aligned vertically with the position of the fixing seat. Activate the first laser emitter and the second laser emitter. By rotating the light-transmitting column, the longitudinal light emitted by the first laser emitter passes through the first light-transmitting hole, and at the same time, the longitudinal light emitted by the second laser emitter passes through the corresponding second light-transmitting hole. Make the position of 0 on the second coordinate system and the position of 0 on the first coordinate system on the same side with respect to the first light-transmitting hole. Fix the mounting plate to the bottom formwork with bolts.

[0018] Step 3: Using the coordinate positions of each embedded sleeve in the first coordinate system as a reference, set the coordinate positions of each embedded sleeve on the bottom slab to be poured to be the same as those of the embedded sleeve on the first floor slab directly below. Thread a rotating seat onto the threaded section, rotate the rotating ring on the rotating seat, and use the L-shaped pointer to find the coordinate angle of the axis of one embedded sleeve of the bottom slab to be poured in the second coordinate system. Move the embedded sleeve with the reflector until the projection point of the laser rangefinder is located on the axis mark and the distance detected by the laser rangefinder matches the coordinate position of the axis of the embedded sleeve. At this time, the axis mark is located at the axis coordinate position of the embedded sleeve. Move the embedded sleeve vertically downward and fix the embedded sleeve to the reinforcing cage.

[0019] Step 4: Repeat step 3 to position and fix all the pre-embedded sleeves on the base plate to be poured.

[0020] Step 5: Pour the base slab to be poured. After the base slab is formed, remove the bottom formwork and repeat steps 2-4 to position the pre-embedded sleeves of each layer above.

[0021] The beneficial effects of the present invention, a positioning device and method for pre-embedded sleeves in the foundation slab of a multi-story building, are as follows: By establishing a first coordinate system and a second coordinate system, the present invention can quickly perform batch positioning of several pre-embedded sleeves on each floor. In batch positioning, it is not necessary to anchor the position of each pre-embedded sleeve on the upper floor one by one through a laser emitting device on the foundation slab. It is only necessary to position and fix the pre-embedded sleeves according to the already determined coordinate positions of each pre-embedded sleeve through the second coordinate system. The present invention can further improve construction efficiency while ensuring installation accuracy. Attached Figure Description

[0022] Figure 1 A partial cross-sectional view of the front of the present invention during use;

[0023] Figure 2 A top view of the fixing base of the present invention;

[0024] Figure 3 A top view of the structure at the top of the light-transmitting column of the present invention;

[0025] Figure 4 A front view of the upper positioning mechanism of the present invention;

[0026] Figure 5 A schematic diagram of the cross-sectional structure of the embedded sleeve with a reflector plate of the present invention;

[0027] Figure 6 A top view of the base plate to be poured in this invention;

[0028] Figure 7 A partial structural diagram of point A in this invention;

[0029] 1. First-layer base plate; 2. Bottom template; 3. Fixing seat; 3-1. Second mounting groove; 3-2. First scale line; 3-3. First mounting groove; 3-4. Horizontal connecting line; 4. Upper positioning mechanism; 4-1. Second light-transmitting hole; 4-2. Light-transmitting column; 4-3. Light rod section; 4-4. Mounting plate; 4-5. Threaded section; 4-6. Rotating seat; 4-6-1. Fixing plate; 4-6-2. Internal threaded sleeve; 4-7. Rotating ring; 4-8. Laser rangefinder sensor; 4-9. L-shaped pointer; 4-10. Second scale line; 5. Longitudinal light; 6. Light emitted by laser rangefinder sensor; 7. Positioning block; 8. Reflector; 8-1. Axis mark; 9. Embedded sleeve; 10. Base plate to be poured; 11. X-axis of the second coordinate system; 12. Y-axis of the second coordinate system; 13. Included angle; 14. Circular guide rail; 15. Bolt. Detailed Implementation

[0030] The following description provides a detailed explanation of the embodiments of the present invention in a step-by-step manner. This description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limiting this invention.

[0032] Example 1:

[0033] like Figure 1-7 As shown:

[0034] A positioning device for pre-embedded sleeves in the foundation slab of a multi-story building includes a bottom positioning mechanism and an upper positioning mechanism 4. The bottom positioning mechanism is used to locate the positions of each pre-embedded sleeve in the foundation slab 1 of the first floor. The upper positioning mechanism is used in conjunction with the bottom positioning mechanism to locate the positions of each pre-embedded sleeve in the foundation slabs of floors above the first floor. The bottom positioning mechanism is provided with a first coordinate system, which is used to locate the coordinate positions of each pre-embedded sleeve in the foundation slab of the first floor. The upper positioning mechanism is provided with a second coordinate system. The origins of the first coordinate system and the second coordinate system are on the same vertical line. The X and Y axes of the second coordinate system are vertically opposite to and parallel to the X and Y axes of the first coordinate system. The second coordinate system is used to locate the positions of the pre-embedded sleeves in the foundation slabs of floors above the first floor.

[0035] In other words, the second coordinate system is formed by translating the first coordinate system upwards along the longitudinal line passing through the origin. Once the coordinate positions of each embedded sleeve on the first-layer base slab are determined, the positioning of each embedded sleeve on the base slab 10 to be poured can be quickly completed simply by locating that position in the second coordinate system. A top view of the base slab to be poured with multiple embedded sleeves can be found here. Figure 6 The difference from existing technologies is that this invention, by quickly establishing a second coordinate system, eliminates the need for a complex positioning procedure for each pre-embedded sleeve. Instead, it directly and quickly locates the coordinates of each pre-embedded sleeve using the second coordinate system.

[0036] Example 2:

[0037] Based on Example 1, further:

[0038] like Figure 1 ,2 As shown, the bottom positioning mechanism includes a fixed base 3. The top of the fixed base 3 is horizontally positioned, and a cylindrical first mounting groove 3-3 is provided at the center of the top of the fixed base 3. Four second mounting grooves 3-1 are arranged at 90-degree intervals on the top of the fixed base along concentric circles outside the first mounting groove 3-3. A first laser emitter is fixedly connected longitudinally in the first mounting groove 3-3, and a second laser emitter is fixedly connected longitudinally in the second mounting groove 3-1. The intersection of the horizontal lines 3-4 connecting the longitudinal beams 5 emitted by the two sets of opposing second laser emitters is... The origin of the first coordinate system is located on the longitudinal light ray 5 emitted by the first laser emitter. The horizontal lines 3-4 connecting the light rays emitted by the two sets of opposing second laser emitters respectively constitute the X and Y axes of the first coordinate system. A first scale line 3-2 representing angles is provided at the top of the fixed base with the origin as the center. The position of one end of the first scale line 3-2 on the X-axis is taken as the 0-degree line. Multiple pre-embedded sleeves 9 are provided on the first-layer base plate 1. The coordinate position of each pre-embedded sleeve 9 is represented by the horizontal line segment connecting the central axis of the pre-embedded sleeve 9 and the origin as the first measuring line (refer to...). Figure 6 The second measurement line is not marked; the second measurement line is located at... Figure 6 The line segment on the X-axis pointing towards the 0 mark forms the horizontal angle (13) between the axis of the pre-embedded sleeve and the origin of the second coordinate system. The coordinate position of the pre-embedded sleeve is represented by the angle between the first measuring line and the line segment on the X-axis pointing towards the 0 mark, and the length of the first measuring line. For example, if the angle between the position of the pre-embedded sleeve and the line segment on the X-axis pointing towards the 0 mark is 60 degrees, and the length of the horizontal line segment connecting the central axis of the pre-embedded sleeve 9 to the origin (i.e., the first measuring line) is 5 meters, then the coordinate position of the axis of the pre-embedded sleeve can be represented as: 60 degrees, 5 meters.

[0039] For reference Figure 1 , 6 As shown, the bottom end of the bottom positioning mechanism is fixedly connected to the center position of the upper surface of the bottom plate 1. The top end of the bottom positioning mechanism is kept horizontal by adjusting its posture. Regarding posture adjustment, many solutions are disclosed in the prior art, such as setting adjustable support feet at the bottom of the fixed base and setting a level on the fixed base. Since these are existing technologies, they will not be described in detail.

[0040] By setting up a first coordinate system, the axis of each embedded sleeve on the first-floor base plate can be represented by specific coordinate parameters. After recording these coordinate parameters, it is only necessary to accurately establish a second coordinate system to quickly determine the position of each embedded sleeve corresponding to the first floor on the upper-floor base plate to be poured.

[0041] Example 3:

[0042] Based on Example 2, this example is further improved as follows:

[0043] like Figure 1 , 3 As shown in Figures 4, 6, and 7, the upper positioning mechanism 4 includes a light-transmitting column 4-2 that penetrates the bottom template 2 of the upper base plate 10 to be poured. A horizontally positioned mounting plate 4-4 is connected to the bottom end of the light-transmitting column 4-2. The mounting plate 4-4 is fixedly connected to the bottom template 2 by bolts, and its posture is adjusted to keep the light-transmitting column 4-2 vertical. A first light-transmitting hole (e.g., [missing information]) is provided at the axis of the light-transmitting column 4-2 to allow light emitted by the first laser emitter to pass through. Figure 3 The circular hole at the center position shown is used to allow light emitted from the four second laser emitters to pass through a second light-transmitting hole 4-1 on the light-transmitting column surrounding the first light-transmitting hole. The line connecting the center points of the two sets of oppositely arranged second light-transmitting holes 4-1 intersects the center point of the first light-transmitting hole to form the origin of the second coordinate system. The line connecting the center points of the two sets of oppositely arranged second light-transmitting holes 4-1 respectively forms the X and Y axes of the second coordinate system (e.g., the circular hole at the center position shown). Figure 6 As shown), the upper part of the light-transmitting column 4-2, which is located above the upper surface of the base plate to be poured, is provided with a threaded section 4-5. A rotating seat 4-6 is screwed onto the threaded section 4-5. A second coordinate system coordinate measuring mechanism is rotatably connected to the rotating seat 4-6. The position of the pre-embedded sleeve on the base plate to be poured on the floor is located by the coordinate measuring mechanism.

[0044] like Figure 1 , 3As shown in Figures 4, 6, and 7, the rotating seat 4-6 includes an internally threaded sleeve 4-6-2 and a fixed disk 4-6-1 coaxially fixed to the bottom of the outer wall of the internally threaded sleeve and folded outward. The internally threaded sleeve 4-6-2 is screwed to the threaded section 4-5. The upper surface of the fixed disk 4-6-1 is provided with an annular guide rail 14 coaxial with the internally threaded sleeve. The axis of the internally threaded sleeve 4-6-2 passes through the origin of the second coordinate system. The coordinate measuring mechanism includes a rotating ring 4-7. The rotating ring 4-7 is coaxial with the internally threaded sleeve. The bushing is mounted outside the internally threaded sleeve. The bottom end of the rotating ring has an annular groove for use with the annular guide rail. A third mounting groove (not shown in the figure) is formed by a radial inward recess on the side wall of the rotating ring 4-7. A laser rangefinder 4-8 is installed in the third mounting groove. The light emitted by the laser rangefinder 4-8 is arranged radially along the internally threaded sleeve. An L-shaped pointer 4-9 is fixedly connected to the top of the rotating ring 4-7 above the opening of the third mounting groove. The L-shaped pointer 4-9 has a sheet-like structure. The bottom of the vertical section of pointer 4-9 is fixedly connected to the top of the rotating ring 4-7, and the end of the horizontal section forms an indicating structure. The L-shaped pointer 4-9 is used to indicate the angle of the light ray 6 emitted by the laser rangefinder relative to the second coordinate system. The second coordinate system has one end of the X-axis as the 0 mark. The 0 mark of the second coordinate system and the 0 mark of the first coordinate system are located on the same side and coplanar with the longitudinal light ray emitted by the first laser emitter. The outer periphery of the light-transmitting column 4-2 above the threaded section is provided with a second scale line 4-10 to mark the horizontal angle based on the 0 mark of the second coordinate system. The end of the horizontal section of the L-shaped pointer 4-9 is opposite to the second scale line 4-10. The coordinates of each pre-embedded sleeve 9 on the base plate 10 to be poured are represented by the horizontal angle 13 between the light ray 6 emitted by the laser rangefinder and the line segment of the X-axis of the second coordinate system towards the 0 mark, and the distance of the horizontal line segment between a point on the light ray emitted by the laser rangefinder and the origin of the second coordinate system. In practical use, the distance between the starting point of the light emitted by the laser rangefinder and the origin should be taken into account. Adding this distance to the detection value of the laser rangefinder gives the length of the second measuring line.

[0045] Example 4:

[0046] Based on Example 3, this example is further improved as follows:

[0047] like Figure 1-7 As shown, the coordinate positions of each pre-embedded sleeve 9 on the first layer base plate 1 in the first coordinate system and the coordinate positions of each pre-embedded sleeve on each upper layer base plate 10 to be poured in the second coordinate system are used to represent the position of the corresponding pre-embedded sleeve axis, and the position of the pre-embedded sleeve is determined based on the axis position.

[0048] Example 5:

[0049] Based on Example 4, this example is further improved as follows:

[0050] like Figure 1 , 5 As shown, a rubber positioning block 7 is also embedded in the pre-embedded sleeve 9. The positioning block 7 is cylindrical, and its outer surface is in close contact with the inner surface of the pre-embedded sleeve 9. A reflector plate 8 is provided at the upper end of the positioning block 7 along the longitudinal direction. An axis mark 8-1 is provided on the inner surface of the reflector plate 8 along the longitudinal direction. The axis mark 8-1 overlaps with the axis of the pre-embedded sleeve 9. The reflector plate 8 is used in conjunction with the laser rangefinder sensor 4-8.

[0051] The laser rangefinder emits a horizontal beam of light, which is then detected by the reflector 8. When the axis mark on the reflector coincides with the projection point of the laser beam emitted by the laser rangefinder, it indicates that the axis of the pre-embedded sleeve is located at a preset angle in the second coordinate system. The pre-embedded sleeve is moved along this angle, and when the detected distance matches the distance data at the coordinate position, the coordinate position of the pre-embedded sleeve is found. After the detection is completed, the positioning block can be removed from the pre-embedded sleeve.

[0052] Example 6:

[0053] Based on Example 5, this example further discloses:

[0054] A positioning method for a positioning device for a pre-embedded sleeve in the foundation slab of a multi-story building includes the following steps:

[0055] Step 1: Fix the bottom positioning mechanism on the upper surface of the first-layer base plate 1. Adjust the posture to make the top of the bottom positioning mechanism horizontal. Determine the coordinate position of the axis of each pre-embedded sleeve 9 on the first-layer base plate according to the drawings and the first coordinate system.

[0056] Step 2: Construct the bottom template 2 of the upper base plate 10 to be poured. A hole is reserved in the center of the bottom template 2 and a light-transmitting column is passed through it. The position of the reserved hole is vertically aligned with the position of the fixing seat 3. Activate the first laser emitter and the second laser emitter. By rotating the light-transmitting column, the longitudinal light emitted by the first laser emitter passes through the first light-transmitting hole, and at the same time, the light emitted by the second laser emitter passes through the corresponding second light-transmitting hole. Make the position of the 0 mark in the second coordinate system and the position of the 0 mark in the first coordinate system on the same side with respect to the first light-transmitting hole. Fix the mounting plate to the bottom template with bolts.

[0057] Step 3: Using the coordinate positions of each embedded sleeve in the first coordinate system as a reference, set the coordinate positions of each embedded sleeve on the bottom slab to be poured to be the same as those of the embedded sleeve on the first floor slab directly below. Thread a rotating seat onto the threaded section, rotate the rotating ring on the rotating seat, and use the L-shaped pointer to find the coordinate angle of the axis of one embedded sleeve of the bottom slab to be poured in the second coordinate system. Move the embedded sleeve with the reflector until the projection point of the laser rangefinder is located on the axis mark and the distance detected by the laser rangefinder matches the coordinate position of the axis of the embedded sleeve. At this time, the axis mark is located at the axis coordinate position of the embedded sleeve. Move the embedded sleeve vertically downward and fix the embedded sleeve to the reinforcing cage.

[0058] Step 4: Repeat step 3 to position and fix all the pre-embedded sleeves on the base plate to be poured.

[0059] Step 5: Pour the base slab to be poured. After the base slab is formed, remove the bottom formwork and repeat steps 2-4 to position the embedded sleeves of each layer above. Since the bottom formwork has light-transmitting columns, it can be reused repeatedly. It is only necessary to ensure the accurate positioning of the light-transmitting columns when installing the bottom formwork.

Claims

1. A positioning device for pre-embedded sleeves in the foundation slab of a multi-story building, characterized in that: It includes a bottom positioning mechanism and an upper positioning mechanism. The bottom positioning mechanism is used to position the various pre-embedded sleeves of the first floor slab, and the upper positioning mechanism is used in conjunction with the bottom positioning mechanism to position the various pre-embedded sleeves of the floor slabs of each floor above the first floor. The bottom positioning mechanism is provided with a first coordinate system, which is used to locate the coordinate positions of each pre-embedded sleeve on the bottom plate. The upper positioning mechanism is provided with a second coordinate system. The origins of the first and second coordinate systems are on the same vertical line. The X and Y axes of the second coordinate system are vertically opposite to and parallel to the X and Y axes of the first coordinate system. The position of the embedded sleeve on the floor slab of each floor above the first floor is located through the second coordinate system. The bottom positioning mechanism includes a fixed base, the top of which is horizontally positioned. A cylindrical first mounting groove is provided at the center of the top of the fixed base, and four second mounting grooves are provided at 90-degree intervals on the top of the fixed base along the concentric circumference outside the first mounting groove. A first laser emitter is fixedly connected longitudinally in the first mounting slot, and a second laser emitter is fixedly connected longitudinally in the second mounting slot. The intersection of the horizontal lines connecting the longitudinal rays emitted by the two sets of opposing second laser emitters is located on the longitudinal rays emitted by the first laser emitter and forms the origin of the first coordinate system. The horizontal lines connecting the rays emitted by the two sets of opposing second laser emitters respectively form the X and Y axes of the first coordinate system. A first scale line representing angle is provided at the top of the fixed base with the origin as the center. The position of one end of the first scale line is taken as the 0-degree line. Multiple embedded sleeves are provided on the bottom plate. The coordinate position of each embedded sleeve is represented as follows: The horizontal line segment connecting the central axis of the pre-embedded sleeve and the origin is used as the first measuring line. The coordinate position of the pre-embedded sleeve is represented by the angle between the first measuring line and the line segment of the X-axis toward the 0 mark and the length of the first measuring line. The upper positioning mechanism includes a light-transmitting column that penetrates the bottom template of the upper base plate to be poured, and a horizontally set mounting plate is connected to the bottom end of the light-transmitting column. The mounting plate is fixedly connected to the bottom template by bolts, and the light-transmitting column is kept vertical by adjusting its posture. The axis of the light-transmitting column is provided with a first light-transmitting hole for passing through the light emitted by the first laser emitter. The column body of the light-transmitting column, which is located around the first light-transmitting hole, is provided with a second light-transmitting hole for passing through the light emitted by the four second laser emitters. The line connecting the center points of the two sets of relatively arranged second light-transmitting holes intersects with the center point of the first light-transmitting hole to form the origin of the second coordinate system. The line connecting the center points of the two sets of relatively arranged second light-transmitting holes respectively forms the X and Y axes of the second coordinate system. The light-transmitting column is provided with a threaded section at the upper part and above the upper surface of the base plate to be poured. A rotating seat is screwed onto the threaded section, and a second coordinate system coordinate measuring mechanism is rotatably connected to the rotating seat. The position of the pre-embedded sleeve on the base plate to be poured on the same floor is located by the coordinate measuring mechanism.

2. The positioning device for pre-embedded sleeves in the foundation slab of a multi-story building as described in claim 1, characterized in that: The bottom end of the bottom positioning mechanism is fixedly connected to the center position of the upper surface of a bottom plate, and the top end of the bottom positioning mechanism is kept horizontal by adjusting the posture.

3. The positioning device for pre-embedded sleeves in the foundation slab of a multi-story building as described in claim 1, characterized in that: The rotating seat includes an internally threaded sleeve and a fixed disc coaxially fixed to the bottom of the outer wall of the internally threaded sleeve and folded outwards. The internally threaded sleeve is screwed to the threaded section. The upper surface of the fixed disk is provided with an annular guide rail coaxial with the internal threaded sleeve. The axis of the internal threaded sleeve passes through the origin of the second coordinate system. The coordinate measuring mechanism includes a rotating ring, which is coaxially sleeved on the outside of the internal threaded sleeve. The bottom end of the rotating ring is provided with an annular groove that cooperates with the annular guide rail. A third mounting groove is formed by radially indenting the side wall of the rotating ring. A laser rangefinder sensor is installed in the third mounting groove. The laser rangefinder emits light rays along the radial direction of the internal threaded sleeve. An L-shaped pointer is fixedly connected to the top of the rotating ring above the opening of the third mounting groove. The L-shaped pointer has a sheet-like structure. The bottom of the vertical section of the L-shaped pointer is fixedly connected to the top of the rotating ring, and the end of the horizontal section forms an indicating structure. The L-shaped pointer is used to indicate the angle of the light emitted by the laser rangefinder relative to the second coordinate system. The second coordinate system has one end of the X-axis as the 0 mark. The 0 mark of the second coordinate system and the 0 mark of the first coordinate system are located on the same side and coplanar with the longitudinal light emitted by the first laser emitter. The outer periphery of the light-transmitting column above the threaded section is provided with a second scale line to mark the horizontal angle starting from the 0 scale line of the second coordinate system. The horizontal end of the L-shaped pointer is opposite to the second scale line. The coordinates of each pre-embedded sleeve on the base plate to be poured are represented by the horizontal angle between the light emitted by the laser rangefinder and the line segment of the X-axis of the second coordinate system towards the 0 scale, and the distance of the horizontal line segment between a point on the light emitted by the laser rangefinder and the origin of the second coordinate system.

4. The positioning device for pre-embedded sleeves in the foundation slab of a multi-story building as described in claim 3, characterized in that: The coordinate positions of each embedded sleeve on the first layer of the base plate in the first coordinate system and the coordinate positions of each embedded sleeve on each upper layer of the base plate to be poured in the second coordinate system are used to represent the position of the corresponding embedded sleeve axis, and the position of the embedded sleeve is determined based on the axis position.

5. The positioning device for pre-embedded sleeves in the foundation slab of a multi-story building as described in claim 4, characterized in that: The pre-embedded sleeve is also embedded with a positioning block made of rubber. The positioning block is cylindrical and its outer surface fits tightly with the inner surface of the pre-embedded sleeve. A reflector is provided at the upper end of the positioning block along the longitudinal direction. An axis mark is provided on the inner surface of the reflector along the longitudinal direction. The axis mark overlaps with the axis of the pre-embedded sleeve. The reflector is used in conjunction with a laser rangefinder sensor.

6. The positioning method of the pre-embedded sleeve positioning device for multi-story building foundation slab as described in claim 5, characterized in that, Includes the following steps: Step 1: Fix the bottom positioning mechanism on the upper surface of the first-layer base plate. Adjust the posture to make the top of the bottom positioning mechanism horizontal. Determine the coordinate position of the axis of each pre-embedded sleeve on the first-layer base plate according to the drawings and the first coordinate system. Step 2: Construct the bottom formwork for the upper slab to be poured. A hole is pre-drilled in the center of the bottom formwork, and a light-transmitting column is inserted through it. The position of the pre-drilled hole is aligned vertically with the position of the fixing seat. Activate the first laser emitter and the second laser emitter. By rotating the light-transmitting column, the longitudinal light emitted by the first laser emitter passes through the first light-transmitting hole, and at the same time, the longitudinal light emitted by the second laser emitter passes through the corresponding second light-transmitting hole. Make the position of 0 on the second coordinate system and the position of 0 on the first coordinate system on the same side with respect to the first light-transmitting hole. Fix the mounting plate to the bottom formwork with bolts. Step 3: Using the coordinate positions of each embedded sleeve in the first coordinate system as a reference, set the coordinate positions of each embedded sleeve on the bottom slab to be poured to be the same as those of the embedded sleeve on the first floor slab directly below. Thread a rotating seat onto the threaded section, rotate the rotating ring on the rotating seat, and use the L-shaped pointer to find the coordinate angle of the axis of one embedded sleeve of the bottom slab to be poured in the second coordinate system. Move the embedded sleeve with the reflector until the projection point of the laser rangefinder is located on the axis mark and the distance detected by the laser rangefinder matches the coordinate position of the axis of the embedded sleeve. At this time, the axis mark is located at the axis coordinate position of the embedded sleeve. Move the embedded sleeve vertically downward and fix the embedded sleeve to the reinforcing cage. Step 4: Repeat step 3 to position and fix all the pre-embedded sleeves on the base plate to be poured. Step 5: Pour the base slab to be poured. After the base slab is formed, remove the bottom formwork and repeat steps 2-4 to position the pre-embedded sleeves of each layer above.

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