An internal control network positioning device and control method for building construction projects

Abstract

The present invention discloses a positioning device and a control method for an internal control network in a building construction project, belonging to the technical field of building surveying. The positioning device includes: a base, on which a keyway is provided, and a telescopic mechanism is slidably connected in the keyway. Two flat keys cooperating with the keyway are installed on the telescopic mechanism, and the two flat keys are symmetrically arranged about the axis of the telescopic mechanism. A spherical reflector is installed on the side of the telescopic mechanism away from the base. A spherical cavity is provided inside the spherical reflector, and a reflector is installed in the spherical cavity. A through hole is provided on the spherical reflector, and the axial direction of the through hole is the same as the axial direction of the flat key. The telescopic mechanism is used to drive the spherical reflector to move along the axial direction of the telescopic mechanism. When measuring multiple transfer floors, the present invention can avoid the verticality deviation caused by the laser plumb instrument during vertical point transfer, which affects the building surveying accuracy.

Description

Technical Field

[0001] The present invention belongs to the technical field of building surveying, and particularly relates to an internal control network positioning device and a control method for building construction projects. Background Art

[0002] In the survey of the construction control network for building construction, the precision control of the layout of the construction control network is the decisive factor affecting the survey.

[0003] Chinese Patent CN 107101621 B discloses a supervision control method for the survey of super high-rise building projects, which uses a laser plumb instrument for vertical point transfer and uses a total station to interlink and review multiple sets of control networks for the survey supervision method. During the process of vertical point transfer by the laser plumb instrument, mainly a plastic sheet with a hole in the middle is used to capture the first laser point on the receiving target, and then the plumb instrument is rotated to capture four laser points at four positions of 0 degrees, 90 degrees, 180 degrees, and 270 degrees respectively. The geometric center of the four laser points is taken as the centering position of the point measured this time. When measuring multiple transfer floors, due to the installation error or human operation error of the laser plumb instrument, it is easy to cause the verticality deviation between the transfer floors, ultimately affecting the building survey precision.

[0004] Therefore, it is necessary to propose an internal control network positioning device and a control method for building construction projects to solve the above problems. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an internal control network positioning device and a control method for building construction projects, which are used to solve the problem that the verticality deviation is easily caused during the vertical point transfer by the laser plumb instrument in the prior art, thus affecting the building survey precision.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] The present invention provides an internal control network positioning device for building construction projects. The positioning device includes: a base, a keyway is provided on the base, a telescopic mechanism is slidably connected in the keyway, two flat keys cooperating with the keyway are installed on the telescopic mechanism, the two flat keys are symmetrically arranged about the axis of the telescopic mechanism, a spherical reflector is installed on the side of the telescopic mechanism away from the base, a spherical cavity is provided inside the spherical reflector, a reflector is installed in the spherical cavity, a through hole is provided on the spherical reflector, the axial direction of the through hole is the same as the axial direction of the flat key, and the telescopic mechanism is used to drive the spherical reflector to move along the axial direction of the telescopic mechanism.

[0008] Further, the telescopic mechanism includes a threaded shaft and a sliding sleeve. One end of the threaded shaft is fixedly connected to the base. The sliding sleeve is in limited sliding connection with the threaded shaft. A threaded sleeve is threadedly connected to the threaded shaft and is rotatably connected to the threaded shaft. The spherical reflector is in damping rotational connection on the side of the sliding sleeve away from the base.

[0009] Further, an installation hole communicating with the keyway is provided on the base. A pressing rod is in limited sliding connection in the installation hole. An installation groove cooperating with the installation hole is provided on the flat key. A clamping block is connected to the installation groove through a spring. The clamping block is in sliding connection with the installation groove. The clamping block cooperates with the installation hole to enable the telescopic mechanism to be clamped or disengaged from the keyway.

[0010] The present invention provides a method for controlling an internal control network in a housing construction project, including the following steps:

[0011] S1. Determine the coordinates of the internal control network: Establish the coordinates of 4 internal control points in the internal control network coordinate system;

[0012] S2. Position the internal control network on the first floor: After measuring the coordinates of the internal control network on the first floor through a measuring device, import them into the internal control network coordinate system to form an image;

[0013] S3. Position the internal control network on the transfer floor: Install a positioning device on the preset transfer floor. Use a laser plumb instrument to guide the laser beam to the positioning device to determine the coordinate position of the transfer floor. Then, after measuring the coordinates of the internal control network on the transfer floor through the measuring device, import them into the internal control network coordinate system;

[0014] S4: Monitor and review the data: Close the control network and the leveling point data. Automatically check the accuracy of the laser point capture and reduce the accumulation of segmental measurement errors through the internal control network coordinate system. Control the angular deviation within 5″ and the relative distance deviation within 1 / 20000.

[0015] Further, in step S3, positioning the transfer floor includes the following steps:

[0016] A1. Determine the installation position of the laser plumb instrument: At the internal control point positioning device on the first floor, adjust the through hole on the spherical reflector to the corresponding coordinates of the internal control network on the first floor. Use a laser plumb instrument to emit the laser beam along the through hole to the inside of the spherical reflector. If the laser beam can be reflected out along the through hole, there is no need to adjust the installation position of the laser plumb instrument. If multiple laser beams are reflected inside the spherical reflector, adjust the installation position of the laser plumb instrument until the laser beam can be reflected out along the through hole;

[0017] A2: Install a positioning device on the transfer floor. Use a laser plumb instrument to emit a laser beam along the through-hole to the inner side of the spherical reflector on the transfer floor. If the laser beam can be reflected out along the through-hole, the position where the through-hole is located is the coordinate of the internal control point on the transfer floor. If multiple laser beams are reflected out within the spherical reflector, adjust the position of the spherical reflector through the adjustment mechanism so that the laser beam can be reflected out along the through-hole;

[0018] A3: Repeat steps A1 - A2 until the coordinates of the internal control network for all transfer floors are determined.

[0019] Furthermore, the measuring device includes a total station, RTK, and GPS. The measuring method is as follows: Based on the measuring base points, in an open field of view, use the total station to locate the coordinates of 4 internal control points on the first floor; in the case where the field of view is blocked, first perform a preliminary positioning through RTK, and then perform precise positioning through GPS.

[0020] The beneficial effects of the present invention are as follows:

[0021] When measuring multiple transfer floors, the present invention ensures the verticality of the laser beam emitted by the laser plumb instrument, reduces the installation error of the laser plumb instrument, ensures the verticality of the internal control points on the transfer floor, and avoids the verticality deviation that is likely to occur during the vertical point transfer of the laser plumb instrument, which affects the building measurement accuracy; by determining that there are no redundant laser beams reflected within the spherical reflector when the laser beam irradiates along the through-hole, the verticality of the internal control points is judged, improving the measurement accuracy of the internal control points and with simple operation; the two flat keys are symmetrically arranged with respect to the axis of the telescopic mechanism. When adjusting the direction of the through-hole, only need to adjust the cooperation of one of the flat keys with the keyway to ensure the verticality of the through-hole orientation.

[0022] Other advantages, objectives, and features of the present invention will be elaborated in the subsequent description, and to some extent, they are obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0024] Figure 1 It is a schematic structural diagram of the positioning device according to an embodiment of the present invention;

[0025] Figure 2 It is a side cross-sectional view of the positioning device according to an embodiment of the present invention;

[0026] Figure 3 It is a schematic structural diagram of the telescopic mechanism according to an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the installation of the laser plumb instrument according to an embodiment of the present invention;

[0028] Figure 5 Schematic diagram of the internal control network coordinate image according to an embodiment of the present invention.

[0029] The markings in the attached drawings are as follows: 1, base; 101, keyway; 102, mounting hole; 103, pressing rod; 2, telescopic mechanism; 201, flat key; 202, mounting groove; 203, spring; 204, clamping block; 205, threaded shaft; 206, sliding sleeve; 207, threaded sleeve; 3, spherical reflector; 301, through hole; 4, laser plumb instrument. Detailed implementation manners

[0030] As Figures 1 to 5 shown, the present invention provides a positioning device for the internal control network of a building construction project. The positioning device includes: a base 1, the base 1 is installed on a preset conversion layer, a keyway 101 is provided on the base 1, a telescopic mechanism 2 is slidably connected in the keyway 101, two flat keys 201 cooperating with the keyway 101 are installed on the telescopic mechanism 2, the two flat keys 201 are symmetrically arranged about the axis of the telescopic mechanism 2, a spherical reflector 3 is installed on the side of the telescopic mechanism 2 away from the base 1, a spherical cavity is provided inside the spherical reflector 3, a reflector is installed in the spherical cavity, a through hole 301 is provided on the spherical reflector 3, the axial direction of the through hole 301 is the same as the axial direction of the flat key 201, and the telescopic mechanism 2 is used to drive the spherical reflector 3 to move along the axial direction of the telescopic mechanism 2.

[0031] The working principle of the above technical solution: As Figure 4 shown, first, install the positioning device at the positioning coordinates of the internal control network on the first floor, make the through hole 301 correspond to the internal control point coordinates on the first floor, then install the laser plumb instrument 4 above the positioning device, adjust the flat key 201 on the telescopic mechanism 2 so that the through hole 301 on the spherical reflector 3 corresponds to the direction of the laser plumb instrument 4, emit a laser beam through the laser plumb instrument 4 and irradiate it into the through hole 301. If the laser beam can be reflected out along the through hole 301 (that is, there is no redundant reflection point of the laser beam inside the spherical reflector 3), it means that the installation position of the laser plumb instrument 4 is stable and the laser beam is vertical. Then install the positioning device on the conversion layer, adjust the flat key 201 on the telescopic mechanism 2 so that the through hole 301 on the spherical reflector 3 corresponds to the direction of the laser plumb instrument 4, and emit the laser beam to the through hole 301 of the positioning device on the conversion layer through the laser plumb instrument 4 on the first floor. If the laser beam can be reflected out along the through hole 301, the position where the through hole 301 is located is the internal control point coordinates of the conversion layer. Repeat the above steps until the internal control network coordinates of all conversion layers are determined.

[0032] Beneficial effects of the above technical solution: Through the design of the above structure, when measuring multiple conversion layers, the perpendicularity of the laser beam emitted by the laser plumb bob 4 is ensured, the installation error of the laser plumb bob is reduced, the perpendicularity of the internal control points of the conversion layer is ensured, and the perpendicularity deviation caused by the vertical point transfer of the laser plumb bob is avoided, which affects the building measurement accuracy; By judging the perpendicularity of the internal control points by the laser beam irradiating on the spherical reflector 3 along the through hole 301 without redundant laser beam reflection, the measurement accuracy of the internal control points is improved, and the operation is simple; The two flat keys are symmetrically arranged about the axis of the telescopic mechanism. When adjusting the direction of the through hole 301, only one of the flat keys needs to be adjusted to cooperate with the key groove to ensure the perpendicularity of the orientation of the through hole 301.

[0033] In an embodiment of the present invention, an installation hole 102 communicating with the key groove 101 is provided on the base 1. A pressing rod 103 is connected in the installation hole 102 in a limited sliding manner. An installation groove 202 cooperating with the installation hole 102 is provided on the flat key 201. A clamping block 204 is connected in the installation groove 202 through a spring 203. The clamping block 204 is slidably connected with the installation groove 202. The clamping block 204 cooperates with the installation hole 102 to enable the telescopic mechanism 2 to be clamped or disengaged from the key groove 101.

[0034] Working principle of the above technical solution: As Figure 2 shown, after the telescopic mechanism 2 is slid into the key groove 101, the clamping block 204 on the flat key 201 is clamped in the installation hole 102 under the action of the spring 203. When it is necessary to slide the telescopic mechanism 2 out of the key groove 101, press the pressing rod 103 to make the clamping block 204 slide out of the installation hole 102. At this time, the telescopic mechanism 2 can be slid out along the key groove 101.

[0035] Beneficial effects of the above technical solution: Through the design of the above structure, the clamping and disassembly of the telescopic mechanism 2 are convenient, and the operation is simple.

[0036] In an embodiment of the present invention, the telescopic mechanism 2 includes a threaded shaft 205 and a sliding sleeve 206. One end of the threaded shaft 205 is fixedly connected to the base 1. The sliding sleeve 206 is connected with the threaded shaft 205 in a limited sliding manner. A threaded sleeve 207 is threadedly connected to the threaded shaft 205. The threaded sleeve 207 is rotatably connected with the threaded shaft 205. The spherical reflector 3 is connected in a damped rotation manner to the side of the sliding sleeve 206 away from the base 1.

[0037] Working principle of the above technical solution: As Figure 3After installing the base 1 at a preset position, a laser plumb instrument 4 is installed at the internal control points on the first floor. The laser beam is emitted through the through hole 301 by the laser plumb instrument 4. If there is an error in the installation position of the base 1, the threaded shaft 205 is driven to slide in a limited manner on the sliding sleeve 206 by rotating the threaded sleeve 207 to adjust the axial displacement of the spherical reflector 3, and the spherical reflector 3 is rotated to adjust the rotation angle of the spherical reflector 3. There is a damping between the spherical reflector 3 and the sliding sleeve 206, so that the spherical reflector 3 can be fixed after rotation.

[0038] Advantages of the above technical solution: Through the design of the above structure, it is convenient to adjust the position of the spherical reflector 3, so that the laser beam can accurately pass through the through hole 301, preventing the spherical reflector 3 from tilting due to the inclination of the ground where the base 1 is installed, and thus unable to ensure the perpendicularity between the transfer layers and causing measurement errors to the internal control points; By setting the cooperation of the threaded shaft 205 and the sliding sleeve 206, the sliding sleeve 206 can stop after moving any distance, which is convenient to adjust the axial displacement of the spherical reflector 3 and is easy to operate; By rotatably connecting the spherical reflector 3 to the sliding sleeve 206 with damping, it is convenient to fix the spherical reflector 3 after adjusting its rotation angle.

[0039] The present invention also provides a control method for the internal control network of a building construction project, including the following steps:

[0040] S1: Determine the internal control network coordinates: Establish the coordinates of 4 internal control points in the internal control network coordinate system, which are (Xa0, Ya0, Za0), (Xb0, Yb0, Zb0), (Xb0, Yb0, Zb0), (Xd0, Yd0, Zd0);

[0041] S2: Locate the internal control network on the first floor: After measuring the coordinates of the internal control network on the first floor by a measuring device and importing them into the internal control network coordinate system to form an image, the measured coordinates of the internal control network on the first floor are (Xa1, Ya1, Za1), (Xb1, Yb1, Zb1), (Xb1, Yb1, Zb1), (Xd1, Yd1, Zd1);

[0042] S3: Locate the internal control network of the transfer layer: Install a positioning device on the preset transfer layer, use a laser plumb instrument to guide the laser beam to the positioning device to determine the coordinate position of the transfer layer, and then measure the coordinates of the internal control network of the transfer layer by the measuring device and import them into the internal control network coordinate system; The coordinates of the internal control network of the transfer layer are (Xai, Yai, Zai), (Xbi, Ybi, Zbi), (Xbi, Ybi, Zbi), (Xdi, Ydi, Zdi);

[0043] S4: Monitoring and verifying data: Close the control network and the horizontal control point data. Automatically calculate the accuracy of laser point capture and reduce the accumulation of segmental survey error through the internal control network coordinate system, control the angular deviation within 5″, and control the relative distance deviation within 1 / 20000.

[0044] The working principle and beneficial effects of the above technical solution are as follows: Figure 4 and 5 , through the cooperation of the laser plumb instrument and the positioning device, the coordinates of the internal control points measured are more accurate, ensuring the verticality of the transfer floor and avoiding the verticality deviation that is likely to occur during the vertical point transfer by the laser plumb instrument and affecting the building measurement accuracy.

[0045] In an embodiment of the present invention, when positioning the transfer floor, the following steps are included:

[0046] A1: Determine the installation position of the laser plumb instrument 4: Install the positioning device on the first floor, adjust the through hole 301 on the spherical reflector 3 to the corresponding position of the internal control network coordinates on the first floor, and emit the laser beam along the through hole 301 through the laser plumb instrument 4 to the inner side of the spherical reflector 3. If the laser beam can be reflected out along the through hole 301, there is no need to adjust the installation position of the laser plumb instrument 4. If multiple laser beams are reflected out within the spherical reflector 3, adjust the installation position of the laser plumb instrument 4 until the laser beam can be reflected out along the through hole 301;

[0047] A2: Install the positioning device on the transfer floor, and emit the laser beam along the through hole 301 through the laser plumb instrument 4 to the inner side of the spherical reflector 3 on the transfer floor. If the laser beam can be reflected out along the through hole 301, the position where the through hole 301 is located is the internal control point coordinates of the transfer floor;

[0048] A3: Repeat steps A1 - A2 until the internal control network coordinates of all transfer floors are determined.

[0049] The working principle and beneficial effects of the above technical solution: Through step A1, the stability of the installation of the laser plumb instrument 4 on the first floor is ensured, thus ensuring the verticality of the laser beam. Through step A2, the verticality between the transfer floors is ensured, reducing the angular deviation and relative distance deviation, and avoiding the verticality deviation that is likely to occur during the vertical point transfer by the laser plumb instrument and affecting the building measurement accuracy.

[0050] In an embodiment of the present invention, the measuring device includes a total station, RTK, and GPS. The measuring method is as follows: According to the measuring reference point, in the case of an open view, position the coordinates of 4 internal control points on the first floor through the total station; in the case of a blocked view, first perform a preliminary positioning through RTK, and then perform a precise positioning through GPS.

[0051] Working principle and beneficial effects of the above technical solution: It ensures the accuracy of the internal control point coordinate positioning when the field of view is blocked, and after positioning by RTK and GPS, no verification is required, ensuring the point position accuracy.

[0052] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An internal control network positioning device for building construction projects, characterized in that, The positioning device includes: a base, on which a keyway is provided, a telescopic mechanism is slidably connected in the keyway, two flat keys cooperating with the keyway are installed on the telescopic mechanism, the two flat keys are symmetrically arranged with respect to the axis of the telescopic mechanism, a spherical reflector is installed on the side of the telescopic mechanism away from the base, a spherical cavity is provided inside the spherical reflector, a reflector is installed in the spherical cavity, a through hole is provided on the spherical reflector, and the axial direction of the through hole is the same as the axial direction of the flat key. The telescopic mechanism is used to drive the spherical reflector to move along the axial direction of the telescopic mechanism. Among them, a laser beam is emitted by a laser plumb instrument and irradiated into the through hole. When there is no redundant reflection point of the laser beam in the spherical reflector, the laser beam can be reflected out along the through hole.

2. The internal control network positioning device for building construction projects according to claim 1, characterized in that: The telescopic mechanism includes a threaded shaft and a sliding sleeve. One end of the threaded shaft is fixedly connected to the base, the sliding sleeve is in limited sliding connection with the threaded shaft, a threaded sleeve is threadedly connected to the threaded shaft, the threaded sleeve is rotatably connected to the threaded shaft, and the spherical reflector is in damping rotational connection on the side of the sliding sleeve away from the base.

3. The internal control network positioning device for building construction projects according to claim 1, characterized in that: An installation hole communicating with the keyway is provided on the base, a pressing rod is in limited sliding connection in the installation hole, an installation groove cooperating with the installation hole is provided on the flat key, a clamping block is connected by a spring in the installation groove, the clamping block is slidably connected to the installation groove, and the clamping block cooperates with the installation hole to enable the telescopic mechanism to be clamped or disengaged from the keyway.

4. An internal control network control method for building construction projects, characterized in that, It includes the following steps: S1. Determine the coordinates of the internal control network: Establish the coordinates of 4 internal control points in the internal control network coordinate system. S2. Positioning of the first-floor internal control network: After measuring the coordinates of the first-floor internal control network by a measuring device, import them into the internal control network coordinate system to form an image. S3. Positioning of the conversion floor internal control network: Install the positioning device according to any one of claims 1-3 on the preset conversion floor, use a laser plumb instrument to guide the laser beam to the positioning device to determine the coordinate position of the conversion floor, and then measure the coordinates of the conversion floor internal control network by the measuring device and import them into the internal control network coordinate system. S4: Monitor and review data: Close the control network and the leveling point data. Automatically check the accuracy of laser point capture and reduce the accumulation of sectional surveying errors through the internal control network coordinate system, control the angular deviation within 5″, and control the relative distance deviation within 1 / 20000.

5. The internal control network control method for building construction projects according to claim 4, characterized in that, In step S3, positioning the conversion floor includes the following steps: A1: Determine the installation position of the laser plumb instrument: At the first-floor internal control point positioning device, adjust the through hole on the spherical reflector to the corresponding first-floor internal control network coordinates, and emit the laser beam along the through hole to the inside of the spherical reflector through the laser plumb instrument. If the laser beam can be reflected out along the through hole, there is no need to adjust the installation position of the laser plumb instrument. If multiple laser beams are reflected out in the spherical reflector, adjust the installation position of the laser plumb instrument until the laser beam can be reflected out along the through hole. A2: Install a positioning device on the transfer layer. Use a laser plumb instrument to emit a laser beam along the through-hole to the inner side of the spherical reflector on the transfer layer. If the laser beam can be reflected out along the through-hole, the position where the through-hole is located is the coordinate of the internal control point on the transfer layer. If multiple laser beams are reflected out within the spherical reflector, adjust the position of the spherical reflector through the adjustment mechanism so that the laser beam can be reflected out along the through-hole; A3: Repeat steps A1 - A2 until the internal control network coordinates of all transfer layers are determined.

6. The internal control network control method for building construction projects according to claim 4, characterized in that, The measuring device includes a total station, RTK, and GPS. The measuring method is as follows: According to the measuring base points, in the case of an open field of view, use the total station to locate the coordinates of 4 internal control points on the first floor; in the case of an obstructed field of view, first perform a preliminary positioning through RTK, and then perform precise positioning through GPS.

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