A surveying and setting out device based on BIM

Abstract

The present invention relates to the field of surveying and layout technology, and discloses a BIM-based surveying and layout device, which solves the problem of poor data acquisition accuracy when conventional laser scanners are used to deal with scenes that cannot be entered in the terminal. By installing a first interlocking slide rail above a tripod, slidingly installing a second interlocking slide rail on the inner side of the first interlocking slide rail, slidingly installing a third interlocking slide rail on the inner side of the second interlocking slide rail, and also movably setting a belt inside the first interlocking slide rail, the second interlocking slide rail, and the third interlocking slide rail, the belt pulls the second interlocking slide rail and the third interlocking slide rail to extend, and then installing the laser scanner body at the end of the third interlocking slide rail, the laser scanner body is driven to extend over a long distance, so that the laser scanner body can penetrate into the interior of the elevator shaft and ventilation duct, thereby improving the accuracy of data acquisition.

Description

Technical Field

[0001] The present invention relates to the technical field of surveying and setting out, and in particular to a surveying and setting out device based on BIM. Background Art

[0002] BIM surveying and layout equipment is used to achieve precise measurement and positioning during construction. These devices typically include advanced surveying technologies such as total stations, laser scanners, and GPS positioning systems, designed to help construction teams better understand and apply building information models.

[0003] Regarding the use of laser scanners, in the early stages of construction of key buildings, spatial model measurements are generally performed on the interior of the building to understand whether the construction meets the specifications. For example, the internal spatial structure of the terminal building requires detailed model measurements.

[0004] Currently, when staff use conventional laser scanners to measure elevator shafts and ventilation ducts in terminal buildings, there will be inconveniences. Since the staff cannot enter the elevator shafts and ventilation ducts, the laser scanners cannot penetrate deep into the elevator shafts and ventilation ducts, so the data they collect is often inaccurate. Summary of the Invention

[0005] The purpose of the present invention is to provide a BIM-based surveying and layout device to solve the problem that conventional laser scanners have poor data collection accuracy when dealing with scenes that cannot be entered in the terminal.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a BIM-based surveying and layout device, comprising a tripod and a laser scanner body mounted above the tripod, wherein an extension mechanism is rotatably mounted on the upper surface of the tripod, a U-shaped frame is fixedly mounted on one end of the extension mechanism, a corner limit assembly is provided on one side of the tripod and on the lower surface of the extension mechanism, and the laser scanner body is movably mounted on the inner side of the U-shaped frame;

[0007] The extension mechanism includes a first fitting slide rail, a second fitting slide rail slidably fitted inside the first fitting slide rail, and a third fitting slide rail slidably fitted inside the second fitting slide rail, a belt is connected between the first fitting slide rail, the second fitting slide rail, and the third fitting slide rail, the U-shaped frame is fixedly connected to one end of the third fitting slide rail, one end of the belt is fixedly connected to the side surface of the U-shaped frame, a lifting frame and a fastening frame are further provided on the side of the upper surface of the first fitting slide rail close to the U-shaped frame, and the belt is wrapped around the surfaces of the lifting frame and the fastening frame;

[0008] The corner limit assembly includes an arc-shaped guide rail fixedly installed on one side of the tripod, and a movable block A and a movable block B are movably installed on the inner side of the arc-shaped guide rail. A laser emitter is installed on one side of the movable block A, and a connecting rod is connected to the other side thereof. A swivel is fixedly connected to one side of the connecting rod. The upper surface of the movable block B is fixedly connected to a support base B, and the support base B is fixedly connected to the lower surface of the first interlocking slide rail.

[0009] Furthermore, an opening groove A and a release groove are provided on the inner lower surface of the first interlocking slide rail, and an upper opening roller is fixedly installed on the upper surface of the first interlocking slide rail close to the laser scanner body. The outer side of the upper opening roller is rotatably connected to a hand crank, and the release groove is located below the upper opening roller. The upper opening roller is connected to the opening groove A, and the belt moves through the opening groove A to the inner side of the upper opening roller, and then passes around the fastening frame, lifting frame and U-shaped frame in turn to be connected.

[0010] Furthermore, a built-in groove is provided inside the second interlocking slide rail, and the side of the built-in groove away from the laser scanner body is connected to the upper surface of the second interlocking slide rail and is connected to the open groove A. A limiting roller assembly is movably connected to the inner wall of the built-in groove, and the side of the built-in groove close to the laser scanner body is connected to the lower surface of the second interlocking slide rail, and a guide pulley is rotatably installed on the inner wall. The belt inside the open groove A passes around the limiting roller assembly and enters the inner side of the built-in groove.

[0011] Furthermore, an open groove B is provided on the upper surface of the third interlocking slide rail, and the open groove B is connected to the opening on the lower side of the built-in groove. After the belt passes around the guide pulley, it enters the inner side of the open groove B. One end of the belt is fixedly connected to the inner wall of the open groove B on the side away from the guide pulley. The belt is arranged in an "S" shape in the common interior of the first interlocking slide rail, the second interlocking slide rail, and the third interlocking slide rail.

[0012] The cam is secured to the inner wall of the center column and is secured to the outer wall of the center column with a spring, and the cam is secured to the inner wall of the center column with a spring.

[0013] Furthermore, the lifting frame and the fastening frame are arranged on one side of the upper opening roller, the lifting frame is fixedly mounted on the upper surface of the first interlocking slide rail, and the fastening frame is elastically rotatably mounted on the upper surface of the first interlocking slide rail. The belt passing through the top of the upper opening roller passes around the guide wheels of the fastening frame and the lifting frame in turn, and is then fixedly connected to the side wall of the U-shaped frame.

[0014] Furthermore, a bearing is connected between the U-shaped frame and the laser scanner body, and the bearing is connected to the upper half of the vertical plane of the center of gravity of the laser scanner body. A swing-elimination assembly is also fixedly installed on one side of the U-shaped frame, and the swing-elimination assembly includes a mounting cover fixedly installed on one side of the U-shaped frame, and a motor is fixedly installed inside the mounting cover, and the output end of the motor is connected to a reciprocating connecting rod, and one end of the reciprocating connecting rod is fixedly connected to a contact rubber ball, and the contact rubber ball is arranged on the outside of the mounting cover and is located between the laser scanner body.

[0015] Furthermore, two movable blocks A are symmetrically arranged on the inner side of the arc guide rail with the support seat B as the center. The lower surface of the movable block A is connected to a fastening screw cap through a screw, one end of the connecting rod is fixedly connected to a swivel, and a rotating disk is provided on the upper side of the tripod. The upper surface of the rotating disk is rotatably connected to the support seat A, and the lower surface of the first interlocking slide rail is fixedly installed on the support seat A and the support seat B.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a BIM-based surveying and layout device, which comprises a first interlocking slide rail installed above a tripod, a second interlocking slide rail slidably installed on the inner side of the first interlocking slide rail, a third interlocking slide rail slidably installed on the inner side of the second interlocking slide rail, and a belt movably arranged inside the first interlocking slide rail, the second interlocking slide rail, and the third interlocking slide rail. The belt pulls the second interlocking slide rail and the third interlocking slide rail to extend, and then a laser scanner body is installed at the end of the third interlocking slide rail. In this way, the laser scanner body is driven to extend over a long distance, so that the laser scanner body can penetrate into the interior of an elevator shaft or a ventilation duct, thereby improving the accuracy of data collection.

[0018] 2. The present invention provides a BIM-based surveying and layout device, which reduces the phenomenon of sinking of the end portion where the laser scanner body is installed by arranging a lifting frame and a fastening frame on the upper surface of the first interlocking slide rail and repeatedly using a belt to pull the extended end portion of the third interlocking slide rail.

[0019] 3. The present invention provides a BIM-based surveying and layout device. By rotating the laser scanner body and installing it on the inner side of a U-shaped frame, and also installing a swing-elimination component on one side of the U-shaped frame, the laser scanner body can maintain a downward vertical state under the action of gravity, and also suppresses the laser scanner body from swinging during the extension process of the extension mechanism, thereby improving the accuracy of the measurement data of the laser scanner body.

[0020] 4. The present invention provides a BIM-based surveying and layout device, which is provided by arranging an arc guide rail on one side of a tripod, and arranging two movable blocks A and one movable block B on the inner side of the arc guide rail, a laser emitter is provided on one side of the movable block A, and the movable block B is arranged between the two movable blocks A. The movable block B is fixedly connected to the lower surface of the first interlocking slide rail. By presetting the positions of the two movable blocks A, the two movable blocks A limit the movable path of the movable block B, thereby suppressing the rotation angle of the first interlocking slide rail, thereby avoiding the situation where the rotation adjustment length of the first interlocking slide rail is too large and collides with the inner wall of the elevator shaft or the ventilation duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the anatomical structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the exploded and planed structure of the extension mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the belt connection route of the present invention;

[0025] Figure 5 It is a schematic diagram of the partial lower surface structure of the first interlocking slide rail of the present invention;

[0026] Figure 6 It is a schematic diagram of the partial upper surface structure of the second interlocking slide rail of the present invention;

[0027] Figure 7 It is a schematic diagram of the explosion structure of the limiting roller assembly of the present invention;

[0028] Figure 8 Schematic diagram of the internal structure of the upper opening scroll of the present invention;

[0029] Figure 9 This is a schematic diagram of the connection structure between the lifting frame, the fastening frame and the belt of the present invention;

[0030] Figure 10 This is a schematic diagram of the connection structure between the laser scanner body and the U-shaped frame of the present invention;

[0031] Figure 11 This is a schematic diagram of the internal structure of the swing elimination component of the present invention;

[0032] Figure 12 This is a front structural diagram of the corner limiting assembly of the present invention;

[0033] Figure 13 It is a schematic diagram of the back structure of the corner limiting assembly of the present invention.

[0034] In the figure: 1. tripod; 11. rotating disk; 12. support base A; 2. laser scanner body; 3. U-shaped frame; 31. bearing; 32. anti-sway assembly; 321. mounting cover; 322. motor; 323. reciprocating connecting rod; 324. contact rubber ball; 4. extension mechanism; 41. first interlocking slide rail; 411. opening groove A; 412. upper opening scroll; 4121. hand crank; 413. release groove; 42. second interlocking slide rail; 421. built-in groove; 422. limiting roller assembly; 4221. rotating ring wheel; 42211. interlocking groove; 4 222. Center column; 42221. Square through-groove; 42222. Movable groove; 4223. Square column; 4224. Limit block; 4225. Push block; 4226. Spring; 423. Guide pulley; 424. Mounting groove; 43. Third interlocking slide rail; 431. Opening groove B; 44. Belt; 45. Lifting frame; 46. Fastening frame; 5. Corner limit assembly; 51. Swivel; 52. Connecting rod; 53. Arc guide rail; 54. Movable block A; 55. Fastening screw cap; 56. Laser emitter; 57. Support seat B; 58. Movable block B. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0037] Combine Figure 1 A BIM-based surveying and mapping layout device includes a tripod 1 and a laser scanner body 2 installed above the tripod 1. An extension mechanism 4 is rotatably installed on the upper surface of the tripod 1, and a U-shaped frame 3 is fixedly installed on one end of the extension mechanism 4. A corner limit component 5 is provided on one side of the tripod 1 and the lower surface of the extension mechanism 4. The laser scanner body 2 is movably installed on the inner side of the U-shaped frame 3.

[0038] The present invention will be further described below with reference to the embodiments.

[0039] See also Figure 2-Figure 9 The extension mechanism 4 includes a first interlocking slide rail 41, a second interlocking slide rail 42 slidably interlocked in the first interlocking slide rail 41, and a third interlocking slide rail 43 slidably interlocked in the second interlocking slide rail 42. A belt 44 is connected between the first interlocking slide rail 41, the second interlocking slide rail 42, and the third interlocking slide rail 43. The U-shaped frame 3 is fixedly connected to one end of the third interlocking slide rail 43, and one end of the belt 44 is fixedly connected to the side surface of the U-shaped frame 3. A lifting frame 45 and a fastening frame 46 are also provided on the side of the upper surface of the first interlocking slide rail 41 close to the U-shaped frame 3, and the belt 44 is wrapped around the surface of the lifting frame 45 and the fastening frame 46.

[0040] See also Figure 12-13 The corner limit assembly 5 includes an arc-shaped guide rail 53 fixedly installed on one side of the tripod 1, and a movable block A54 and a movable block B58 are movably installed on the inner side of the arc-shaped guide rail 53. A laser emitter 56 is installed on one side of the movable block A54, and the other side is connected to a connecting rod 52. A swivel 51 is fixedly connected to one side of the connecting rod 52. The upper surface of the movable block B58 is fixedly connected to a support seat B57, and the support seat B57 is fixedly connected to the lower surface of the first interlocking slide rail 41.

[0041] See also Figure 2-Figure 5The inner lower surface of the first engaging slide rail 41 is provided with an opening groove A411 and a release groove 413. An upper opening scroller 412 is fixedly installed on the upper surface of the first engaging slide rail 41 close to the laser scanner body 2. The outer side of the upper opening scroller 412 is rotatably connected with a hand crank 4121. The release groove 413 is located below the upper opening scroller 412. The upper opening scroller 412 is connected to the opening groove A411. The belt 44 is movable from the opening groove A411 to the inner side of the upper opening scroller 412, and then passes through the fastening frame 46 and the lifting frame 45 in turn to be connected to the U-shaped frame 3. A built-in groove 421 is provided inside the second engaging slide rail 42. The built-in groove 421 is connected to the upper surface of the second engaging slide rail 42 on the side away from the laser scanner body 2, and is connected to the opening groove A411. The inner wall of the third interlocking rail 43 is movably connected with a limiting roller assembly 422, and the side of the built-in groove 421 close to the laser scanner body 2 is connected to the lower surface of the second interlocking slide rail 42. A guide pulley 423 is rotatably installed on the inner wall. The belt 44 on the inner side of the opening groove A411 passes around the limiting roller assembly 422 and enters the inner side of the built-in groove 421. An opening groove B431 is provided on the upper surface of the third interlocking slide rail 43. The opening groove B431 is connected to the opening on the lower side of the built-in groove 421. The belt 44 passes around the guide pulley 423 and enters the inner side of the opening groove B431. One end of the belt 44 is fixedly connected to the inner wall of the opening groove B431 away from the guide pulley 423. The belt 44 is arranged in an "S" shape in the common interior of the first interlocking slide rail 41, the second interlocking slide rail 42 and the third interlocking slide rail 43.

[0042] The working method and principle are as follows: by manually shaking the hand rocker 4121, the rotating column inside the upper opening roller 412 drives the belt 44 to transmit, thereby pulling the belt 44 out of the opening groove A411. As the belt 44 is pulled, the second interlocking slide rail 42 and the third interlocking slide rail 43 are pulled together and extend from one end of the first interlocking slide rail 41. After the second interlocking slide rail 42 is fully extended from one end of the first interlocking slide rail 41, as the belt 44 continues to be pulled, the third interlocking slide rail 43 also continues to extend from one end of the second interlocking slide rail 42. As a result, the laser scanner body 2 installed on one end of the third interlocking slide rail 43 is extended to one side. When there are elevator shafts and ventilation ducts that are inconvenient for staff to enter at the terminal site, the laser scanner body 2 can be extended into the elevator shaft and ventilation ducts, so that the laser scanner body 2 can more accurately measure the model data in the elevator shaft and ventilation ducts.

[0043] See also Figure 6-Figure 7The upper surface of the second embedded slide rail 42 is located at the position where the limiting roller assembly 422 is installed. A mounting groove 424 is also provided. The mounting groove 424 is movably connected to the release groove 413. The limiting roller assembly 422 includes a central column 4222 fixedly installed on the inner wall of the upward opening of the built-in groove 421. A rotating ring wheel 4221 is rotatably provided on the outer surface of the central column 4222. A square column 4223 is movably installed in the interior of the central column 4222. The horizontal sides of the square column 4223 are fixedly connected to the limiting blocks 4224. One end of the square column 4223 is fixedly connected to the pushing block 4225. The lower surface of the pushing block 4225 A spring 4226 is fixedly connected to the surface, and the push block 4225 and the spring 4226 are movably installed on the inner side of the installation groove 424. A square through-groove 42221 is provided inside the center column 4222, and movable grooves 42222 are provided on the outer surfaces of both sides of the middle horizontal portion. The movable groove 42222 is connected to the square through-groove 42221, and the square through-groove 42221 is connected to the installation groove 424. The square column 4223 is movably installed up and down on the inner side of the square through-groove 42221, and the limit block 4224 is movably installed up and down on the inner side of the movable groove 42222. The inner wall of the rotating ring wheel 4221 is provided with a fitting groove 42211.

[0044] When the limit block 4224 is in the upper position in the movable groove 42222, the outer surface of the limit block 4224 does not protrude from the outer surface of the center column 4222. When the limit block 4224 is in the lower position in the movable groove 42222, the outer surface of the limit block 4224 protrudes from the outer surface of the center column 4222 and engages with the engaging groove 42211, thereby limiting the position of the rotating ring wheel 4221, so that the rotating ring wheel 4221 cannot rotate outside the center column 4222.

[0045] When the belt 44 pulls the second embedded slide rail 42 inside the first embedded slide rail 41 to extend outward, the pushing block 4225 is squeezed by the lower surface of the inner side of the first embedded slide rail 41 and is always retracted inside the installation groove 424. At this time, the square column 4223 and the limit block 4224 connected to one side are placed below the inside of the central column 4222, so that the limit block 4224 is embedded in the embedded groove 42211, so that the rotating ring wheel 4221 cannot rotate. Under this condition, the operation is open. The roller 412 pulls the belt 44, initially only extending the second engaging slide rail 42, and then, after the second engaging slide rail 42 is fully extended, the mounting groove 424 slides to the bottom of the release groove 413. At this time, the pushing block 4225 is pushed upward by the spring 4226, and the square column 4223 and the limit block 4224 move upward inside the center column 4222, so that the limit block 4224 is not limited in the engaging groove 42211. At this time, the rotating ring The wheel 4221 can rotate on the outer surface of the central column 4222. As the rotating ring wheel 4221 can rotate, the belt 44 on the inner side of the second embedded slide rail 42 can be pulled. At this time, as the belt 44 is continuously pulled, the third embedded slide rail 43 on the inner side of the second embedded slide rail 42 can be pulled out. The above operation process realizes the sequential driving of the second embedded slide rail 42 and the third embedded slide rail 43. Due to the nested relationship of the interlocking slide rails 43, the connection between the first interlocking slide rail 41 and the second interlocking slide rail 42 has a larger contact area than the connection between the second interlocking slide rail 42 and the third interlocking slide rail 43. Therefore, the connection stability of the former is better than that of the latter. By controlling the second interlocking slide rail 42 to extend first and the third interlocking slide rail 43 to extend subsequently, the laser scanner body 2 installed at the outer end of the third interlocking slide rail 43 can be greatly reduced in its shaking when extending outward, thereby improving its stability during the extension process.

[0046] See also Figure 9 The lifting frame 45 and the fastening frame 46 are arranged on one side of the upper opening scroller 412. The lifting frame 45 is fixedly mounted on the upper surface of the first interlocking slide rail 41, and the fastening frame 46 is elastically rotatably mounted on the upper surface of the first interlocking slide rail 41. The belt 44 passing through the top of the upper opening scroller 412 passes around the guide wheels of the fastening frame 46 and the lifting frame 45 in turn, and then is fixedly connected to the side wall of the U-shaped frame 3.

[0047] During the extension of the second interlocking slide rail 42 and the third interlocking slide rail 43, one end of the laser scanner body 2 is inevitably set to sink due to gravity, which will cause the installation position of the laser scanner body 2 to be unbalanced and affect the measurement results. The belt 44 pulled out by the upper opening roller 412 is adaptively lengthened when the second interlocking slide rail 42 and the third interlocking slide rail 43 are extended, and the fastening frame 46 pulls and tightens the belt 44, so that the belt 44 can pull the extended second interlocking slide rail 42 and the third interlocking slide rail 43 to reduce their settlement.

[0048] See also Figure 10-11 A bearing 31 is connected between the U-shaped frame 3 and the laser scanner body 2. The bearing 31 is connected to the upper half of the vertical plane of the center of gravity of the laser scanner body 2. A swing-eliminating assembly 32 is also fixedly installed on one side of the U-shaped frame 3. The swing-eliminating assembly 32 includes a mounting cover 321 fixedly installed on one side of the U-shaped frame 3. A motor 322 is fixedly installed inside the mounting cover 321. The output end of the motor 322 is connected to a reciprocating connecting rod 323. One end of the reciprocating connecting rod 323 is fixedly connected to a contact rubber ball 324. The contact rubber ball 324 is arranged on the outside of the mounting cover 321 and is located between the laser scanner body 2.

[0049] By rotating the laser scanner body 2 on the inner side of the U-shaped frame 3, the laser scanner body 2 can maintain a downward vertical position under the action of gravity. Because the laser scanner body 2 is rotatingly installed on the inner side of the U-shaped frame 3, the laser scanner body 2 will swing during the movement of the laser scanner body 2. The motor 322 drives one end of the reciprocating connecting rod 323 to swing back and forth, so that the contact rubber ball 324 cyclically contacts the surface of the laser scanner body 2, thereby eliminating the swing generated when the laser scanner body 2 moves with the U-shaped frame 3.

[0050] See also Figure 12-13 Two movable blocks A54 are symmetrically arranged on the inner side of the arc-shaped guide rail 53 with the support seat B57 as the center. The lower surface of the movable block A54 is connected to a fastening screw cap 55 through a screw. One end of the connecting rod 52 is fixedly connected to the swivel 51. A rotating disk 11 is provided on the upper side of the tripod 1. The upper surface of the rotating disk 11 is rotatably connected to the support seat A12. The lower surface of the first fitting slide rail 41 is fixedly mounted on the support seat A12 and the support seat B57. The swivel 51 is concentrically rotatably arranged on the outer surface of the rotating disk 11. The connecting line of the connecting rod 52 and the angle of laser emission of the laser emitter 56 passes through the center of the swivel 51.

[0051] After the extension mechanism 4 extends the laser scanner body 2 to the elevator shaft and ventilation duct, since the extension mechanism 4 can be rotated and adjusted on the tripod 1, due to the extension of the extension mechanism 4, the end of the extension mechanism 4 is prone to collide with the inner wall of the elevator shaft and ventilation duct during rotation adjustment, there is a risk of damage to the equipment. The present device adjusts the position of the movable block A54 on the arc guide rail 53 so that the rays emitted by the laser emitter 56 are projected onto the inner wall of the elevator shaft and ventilation duct, and then fixes the position of the movable block A54 on the arc guide rail 53 by tightening the screw cap 55. Since the movable range of the movable block B58 connected to the lower surface of the support seat B57 is between the two movable blocks A54, when rotating and adjusting the angle of the first interlocking slide rail 41, the two movable blocks A54 will limit the movable block B58, so that the movable range of the laser scanner body 2 installed at the end of the third interlocking slide rail 43 is within a safe range and will not collide with the elevator shaft and ventilation duct.

[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A BIM-based surveying and mapping device, comprising a tripod (1) and a laser scanner body (2) mounted above the tripod (1), characterized in that: An extension mechanism (4) is rotatably mounted on the upper surface of the tripod (1), a U-shaped frame (3) is fixedly mounted on one end of the extension mechanism (4), a corner limiting assembly (5) is provided on one side of the tripod (1) and the lower surface of the extension mechanism (4), and the laser scanner body (2) is movably mounted on the inner side of the U-shaped frame (3); The extension mechanism (4) includes a first interlocking slide rail (41), a second interlocking slide rail (42) slidably interlocked in the first interlocking slide rail (41), and a third interlocking slide rail (43) slidably interlocked in the second interlocking slide rail (42), a belt (44) is connected between the first interlocking slide rail (41), the second interlocking slide rail (42), and the third interlocking slide rail (43), the U-shaped frame (3) is fixedly connected to one end of the third interlocking slide rail (43), one end of the belt (44) is fixedly connected to the side surface of the U-shaped frame (3), and a lifting frame (45) and a fastening frame (46) are further provided on the side of the upper surface of the first interlocking slide rail (41) close to the U-shaped frame (3), and the belt (44) is connected around the surface of the lifting frame (45) and the fastening frame (46); An opening groove A (411) and a release groove (413) are provided on the inner lower surface of the first engaging slide rail (41); an upper opening roller (412) is fixedly mounted on the upper surface of the first engaging slide rail (41) close to the laser scanner body (2); a hand crank (4121) is rotatably connected to the outer side of the upper opening roller (412); the release groove (413) is located below the upper opening roller (412); the upper opening roller (412) is connected to the opening groove A (411); the belt (44) is movably passed through the opening groove A (411) to the inner side of the upper opening roller (412), and then passes through the fastening frame (46), the lifting frame (45) and the U-shaped frame (3) in sequence to be connected; A built-in groove (421) is provided inside the second interlocking slide rail (42), and the side of the built-in groove (421) away from the laser scanner body (2) is connected to the upper surface of the second interlocking slide rail (42) and is connected to the open groove A (411), and the inner wall thereof is movably connected to a limiting roller assembly (422), and the side of the built-in groove (421) close to the laser scanner body (2) is connected to the lower surface of the second interlocking slide rail (42), and a guide pulley (423) is rotatably mounted on the inner wall thereof, and the belt (44) inside the open groove A (411) passes around the limiting roller assembly (422) and enters the inner side of the built-in groove (421); An open groove B (431) is provided on the upper surface of the third interlocking slide rail (43), and the open groove B (431) is connected to the opening on the lower side of the built-in groove (421). The belt (44) passes around the guide pulley (423) and enters the inner side of the open groove B (431). One end of the belt (44) is fixedly connected to the inner wall of the open groove B (431) away from the guide pulley (423). The belt (44) is arranged in an "S" shape in the common interior of the first interlocking slide rail (41), the second interlocking slide rail (42), and the third interlocking slide rail (43). The upper surface of the second engaging slide rail (42) is provided with an installation groove (424) at a position on the side where the limiting roller assembly (422) is installed. The installation groove (424) is movably connected to the release groove (413). The limiting roller assembly (422) includes a central column (4222) fixedly installed on the inner wall of the upward opening of the built-in groove (421). The outer surface of the central column (4222) is rotatably provided with a rotating ring wheel (4221). The interior of the central column (4222) is movably installed up and down. There is a square column (4223), the horizontal two sides of the square column (4223) are fixedly connected to the limit block (4224), one end of the square column (4223) is fixedly connected to the push block (4225), the lower surface of the push block (4225) is fixedly connected to the spring (4226), the push block (4225) and the spring (4226) are movably installed on the inner side of the installation groove (424), the spring (4226) provides an upward thrust to the push block (4225), and the central column (422 2) is provided with a square through-groove (42221), and movable grooves (42222) are provided on the outer surfaces of both sides of the middle horizontal portion. The movable groove (42222) is connected to the square through-groove (42221), and the square through-groove (42221) is connected to the mounting groove (424). The square column (4223) is movably mounted on the inner side of the square through-groove (42221) up and down, and the limit block (4224) is movably mounted on the inner side of the movable groove (42222) up and down. The rotating ring wheel ( 4221) is provided with an engaging groove (42211); when the limit block (4224) is in the upper position in the movable groove (42222), the outer surface of the limit block (4224) does not protrude from the outer surface of the center column (4222); when the limit block (4224) is in the lower position of the movable groove (42222), the outer surface of the limit block (4224) protrudes from the outer surface of the center column (4222) and engages with the engaging groove (42211), thereby limiting the rotating ring wheel (4221).

2. The BIM-based surveying and setting out device according to claim 1, characterized in that: The lifting frame (45) and the fastening frame (46) are arranged on one side of the upper opening scroller (412), the lifting frame (45) is fixedly mounted on the upper surface of the first interlocking slide rail (41), and the fastening frame (46) is elastically rotatably mounted on the upper surface of the first interlocking slide rail (41).

3. The BIM-based surveying and setting out device according to claim 1, characterized in that: A bearing (31) is connected between the U-shaped frame (3) and the laser scanner body (2), and the bearing (31) is connected to the upper half of the vertical plane of the center of gravity of the laser scanner body (2). A swing elimination component (32) is fixedly installed on one side of the U-shaped frame (3), and the swing elimination component (32) includes a mounting cover (321) fixedly installed on one side of the U-shaped frame (3). A motor (322) is fixedly installed inside the mounting cover (321), and a reciprocating connecting rod (323) is connected to the output end of the motor (322). The reciprocating connecting rod (323) One end of the connecting rod (323) is fixedly connected to a contact rubber ball (324), and the contact rubber ball (324) is arranged outside the mounting cover (321) and is located between the mounting cover (321) and the laser scanner body (2). The motor (322) drives one end of the reciprocating connecting rod (323) to swing back and forth, so that the contact rubber ball (324) cyclically contacts the surface of the laser scanner body (2), thereby eliminating the swinging generated when the laser scanner body (2) moves with the U-shaped frame (3).

4. The BIM-based surveying and setting out device according to claim 1, characterized in that: The corner limiting assembly (5) includes an arc-shaped guide rail (53) fixedly mounted on one side of the tripod (1), a movable block A (54) and a movable block B (58) movably mounted on the inner side of the arc-shaped guide rail (53), a laser emitter (56) mounted on one side of the movable block A (54), and a connecting rod (52) connected to the other side thereof, a rotating ring (51) fixedly connected to one side of the connecting rod (52), a support seat B (57) fixedly connected to the upper surface of the movable block B (58), and the support seat B (57) fixedly connected to the lower surface of the first engaging slide rail (41); Two movable blocks A (54) are symmetrically arranged on the inner side of the arc guide rail (53) with the support seat B (57). The lower surface of the movable block A (54) is connected to a fastening screw cap (55) through a screw rod. A rotating disk (11) is provided on the upper side of the tripod (1). The upper surface of the rotating disk (11) is rotatably connected to the support seat A (12). The lower surface of the first interlocking slide rail (41) is fixedly mounted on the support seat A (12) and the support seat B (57). The rotating ring (51) is coaxially rotatably arranged on the outer surface of the rotating disk (11). The connecting line of the connecting rod (52) and the laser emission angle of the laser emitter (56) passes through the center of the rotating ring (51).

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