Measuring equipment for constructional engineering

Abstract

The invention relates to the technical field of laser range finders, and particularly discloses a measuring device for constructional engineering, which comprises a laser range finder main body, the laser range finder further comprises a supporting plate located on the back of the laser range finder body. The holding mechanism is located on the side, away from the laser range finder body, of the supporting plate, and the holding mechanism is folded and stored on the surface of the supporting plate; the marking mechanism is located on the surface of the supporting plate, the measuring mechanism is connected with the laser range finder body, according to the measuring equipment for constructional engineering, a to-be-measured point is locked through the marking mechanism and then adjusted to be in a vertical state to reversely deduce the original distance, it is ensured that each detection point of an arc-shaped wall surface can be accurately measured, and the measuring accuracy is improved. The position of the missing part is not limited by the measurement angle, the integrity of construction inspection is ensured, and the later wall surface radian standard exceeding and reworking rectification caused by local missing inspection are avoided.

Description

Technical Field

[0001] This invention relates to the field of laser rangefinder technology, specifically to a measuring device for building engineering. Background Technology

[0002] Construction engineering refers to the process of transforming various materials and resources into buildings or structures with specific functions through a series of planning, design, construction, and maintenance activities. In order to ensure the accuracy, safety, and efficiency of the project, workers will use surveying equipment to measure the construction site before construction.

[0003] In construction work, laser measuring instruments, with their advantages of high precision, high efficiency, and visualization, have become a core tool to replace traditional optical instruments and are widely used in key processes such as setting out lines, measuring distances, measuring angles, plumb lines, and flatness inspection.

[0004] A handheld laser rangefinder is an electronic instrument that uses a laser beam to measure distance. When using it, the construction worker holds it with one hand, keeps the instrument perpendicular to the measurement direction, aligns the laser beam with the measurement endpoint, and presses the "measure" button. The measurement result is usually displayed directly on the screen.

[0005] Modern architecture increasingly pursues unique shapes and designs, and curved surfaces (such as arc walls, domes, curved curtain walls, and irregular structures) are common design elements. Some interior walls of buildings use gentle curves to soften the space. The curvature extends within a single plane, with a stable and gentle curvature. After construction, construction workers need to use handheld laser rangefinders to check the accuracy of the construction. Due to the non-planar nature of curved surfaces, construction workers need to keep the laser perpendicular to the curved surface during inspection. In order to find the best angle of perpendicular incidence, construction workers need to repeatedly adjust the position and angle of the instrument, increasing the measurement time and operational difficulty. To address this, we propose a measuring device for building engineering. Summary of the Invention

[0006] The purpose of this invention is to provide a measuring device for construction engineering, in order to solve the problem mentioned in the background art that, due to the non-planar characteristics of curved surfaces, construction workers need to keep the laser perpendicular to the curved surface during inspection, and in order to find the optimal angle of perpendicular incidence, construction workers need to repeatedly adjust the position and angle of the instrument, which increases the measurement time and the difficulty of operation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a measuring device for building engineering, comprising a laser rangefinder body; a support plate located on the back of the laser rangefinder body; and a holding mechanism located on the side of the support plate away from the laser rangefinder body, the holding mechanism being folded and stored on the surface of the support plate; The marking mechanism is located on the surface of the support plate and marks the points to be measured on the curved wall surface. The measuring mechanism is connected to the main body of the laser rangefinder. When the main body of the laser rangefinder cannot measure the distance between itself and the point to be measured on the curved wall under normal conditions, the marking mechanism marks the point to be measured on the curved wall. The measuring mechanism adjusts the incident angle of the main body of the laser rangefinder on the curved wall. After the laser beam of the main body of the laser rangefinder is perpendicularly irradiated to the point to be measured on the curved wall, the measuring mechanism displays the distance between the main body of the laser rangefinder and the point to be measured on the curved wall before adjustment.

[0008] The holding mechanism includes a mounting base, inside which is a grip rod. A rotating shaft is fixedly connected to one end of the grip rod near the mounting base. The rotating shaft is rotatably connected to the inner wall of the mounting base. Multiple rubber strips are fixedly connected to the outer side of the rotating shaft. Multiple limiting grooves that engage with the rubber strips are provided on the inner wall of the mounting base.

[0009] The marking mechanism includes a support frame, with a laser module fixedly connected to the inner wall of the support frame. The laser module emits a different laser frequency than the main body of the laser rangefinder. An adjustment shaft is fixedly connected to the outer side of the support frame. The adjustment shaft is rotatably connected to the inner wall of the support plate. The laser module is close to the laser emission part of the main body of the laser rangefinder. A limiting component is provided on the outer side of the adjustment shaft to adjust the laser irradiation position of the laser module.

[0010] The limiting component includes a limiting rod located on the inner wall of the adjusting shaft. A sliding groove is provided on the inner wall of the adjusting shaft to slide and connect with the limiting rod. The limiting rod drives the adjusting shaft to rotate synchronously through the sliding groove. A compression spring is fixedly connected to one end of the limiting rod near the sliding groove. The compression spring is fixed to the inner wall of the sliding groove. A knob is fixedly connected to one end of the limiting rod that protrudes from the adjusting shaft. An iron ring is provided on the outside of the knob. A docking groove is provided on the inner wall of the support plate to slide and connect with the iron ring. A magnet is fixedly connected to the inner wall of the docking groove. The side of the magnet near the iron ring is frosted.

[0011] The measuring mechanism includes a display screen located on the surface of the laser rangefinder body. A controller is installed on the surface of the laser rangefinder body and connected to the laser rangefinder body. An adjustment plate is slidably connected to the support plate near the side of the laser rangefinder body. A connecting rod is fixedly connected to the center of one end of the adjustment plate. An angle sensor is provided on the outside of the connecting rod and connected to the controller. The connecting rod is rotatably connected to the inner wall of the support plate. A docking iron plate is fixedly connected to the end of the adjustment plate away from the connecting rod. An adjustment groove is opened on the side of the laser rangefinder body near the support plate. The docking iron plate is slidably connected to the inner wall of the adjustment groove. Strong magnetic plates are fixedly connected to both ends of the adjustment groove. A rotating component that drives the connecting rod to rotate is provided on the inner wall of the support plate.

[0012] The rotating component includes a driven wheel one fixedly connected to the connecting rod, a transmission belt meshing on the outer side of the driven wheel one, a driven wheel two meshing on the side of the transmission belt away from the driven wheel one, the driven wheel two being rotatably connected to the inner wall of the support plate, a driving wheel fixedly connected to the shaft of the driven wheel two, the driving wheel being rotatably connected to the inner wall of the support plate, a transmission gear plate meshing on the outer side of the driving wheel, and a driving component for adjusting the position of the transmission gear plate being provided on the outer side of the transmission gear plate.

[0013] Among them, a limit block is fixedly connected to the outer side of the transmission gear plate, the limit block is slidably connected to the inner wall of the support plate, and a return spring is fixedly connected to the outer side of the limit block, and the return spring is fixedly connected to the inner wall of the support plate.

[0014] The driving component includes a connecting plate fixedly connected to the transmission gear plate, a connecting plate slidably connected to the inner wall of the support plate, transmission rods fixedly connected to both sides of the connecting plate, a transmission cylinder fixedly connected to the inner wall of the support plate, a piston plate fixedly connected to the end of the transmission rod near the transmission cylinder, a connecting box connected to the end of the transmission cylinder away from the transmission rod, the connecting box fixedly connected to the inner wall of the support plate, an air supply pipe connected to the outer side of the connecting box, an inflatable bladder fixedly connected to the surface of the grip, an air supply pipe passing through the support plate and connecting to the inflatable bladder, a one-way valve one installed on the surface of the inflatable bladder, and a one-way valve two installed at the end of the air supply pipe near the inflatable bladder. One-way valve one allows external gas to flow into the inflatable bladder, while one-way valve two only allows gas inside the inflatable bladder to flow into the air supply pipe; the inner wall of the connecting box is provided with an adjusting component to adjust the airflow area between the connecting box and the transmission cylinder.

[0015] The adjusting component includes a sealing plate that is slidably and sealingly connected to the inner wall of the connecting box. A connecting frame is fixedly connected to the end of the sealing plate away from the connecting box. A rotating column is rotatably connected to the surface of the connecting frame. An adjusting screw is fixedly connected to the outside of the rotating column. The adjusting screw is threadedly connected to the inner wall of the support plate.

[0016] The inner wall of the connecting box is provided with a pressure stabilizing component, which includes a conical plug. A flow hole is opened in the inner wall of the connecting box. The inner wall of the flow hole is slidably connected to the conical plug. A second return spring is fixedly connected to the outer side of the conical plug. The end of the second return spring away from the conical plug is fixedly connected to the connecting box.

[0017] This invention has at least the following beneficial effects: When in use, this application unfolds the holding mechanism to assist the staff in holding the device, thereby ensuring the stability of the laser rangefinder body. The laser rangefinder body directly measures the wall surface to be measured. If the wall surface to be measured is a flat wall or the laser beam of the laser rangefinder body is perpendicularly illuminating the curved wall surface, the display screen of the laser rangefinder body can directly display stable distance data. If the display screen does not show data or the displayed data fluctuates after irradiation, the marked point is marked by the set marking mechanism. The measuring mechanism adjusts the incident angle of the laser rangefinder body on the curved wall. After the laser beam of the laser rangefinder body is perpendicularly irradiated to the point on the curved wall, the measuring mechanism displays the distance between the laser rangefinder body and the point on the curved wall before adjustment. The marked point is locked by the marking mechanism, and then the original distance is calculated by adjusting to a perpendicular state. This ensures that every detection point on the curved wall can be accurately measured, and no part of the position is missed due to the limitation of the measurement angle. This ensures the integrity of the construction inspection and avoids the wall curvature exceeding the standard and rework due to local omissions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall invention; Figure 2 This is a rear view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the rear view structure of the laser rangefinder of the present invention; Figure 4 This is a side sectional view of the mounting base of the present invention. Figure 5 This is a cross-sectional schematic diagram of the marking mechanism structure of the present invention; Figure 6 for Figure 5 Enlarged diagram of area A in the middle; Figure 7 This is a schematic diagram of the measuring mechanism structure of the present invention; Figure 8 This is a schematic diagram of the driving component structure of the present invention; Figure 9 This is a side sectional view of the connecting box structure of the present invention; Figure 10 This is a schematic diagram of the original distance analysis.

[0019] In the diagram: 1. Laser rangefinder body; 2. Support plate; 3. Holding mechanism; 30. Mounting base; 31. Grip bar; 32. Rotating shaft; 33. Rubber strip; 34. Limiting groove; 4. Marking mechanism; 40. Bearing frame; 41. Laser module; 42. Adjusting shaft; 43. Limiting component; 44. Limiting rod; 45. Sliding groove; 46. Compression spring; 47. Knob; 48. Iron ring; 49. Docking groove; 410. Magnetic piece; 5. Measuring mechanism; 50. Display screen; 51. Controller; 52. Adjusting plate; 53. Connecting rod; 54. Angle sensor; 55. Docking iron piece; 56. Adjusting groove; 57. Strong magnetic piece; 58. Rotating component; 59. Driven wheel one; 510. Transmission belt; 511. Driven wheel two; 512. Driving wheel; 513. Transmission gear plate; 514. Driving component; 515. Limiting block; 516. Return spring one; 517. Connecting plate; 518. Transmission rod; 519. Transmission cylinder; 520. Piston plate; 521. Connecting box; 522. Air supply pipe; 523. Inflatable bladder; 524. One-way valve one; 525. One-way valve two; 526. Adjusting component; 527. Sealing plate; 528. Connecting frame; 529. Rotating column; 530. Adjusting screw; 531. Air pressure stabilizer; 532. Conical plug; 533. Flow hole; 534. Return spring two. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 10 This invention provides a technical solution: a measuring device for building engineering, including a laser rangefinder body 1; a support plate 2 located on the back of the laser rangefinder body 1; a holding mechanism 3 located on the side of the support plate 2 away from the laser rangefinder body 1, the holding mechanism 3 being folded and stored on the surface of the support plate 2; a marking mechanism 4 located on the surface of the support plate 2, the marking mechanism 4 marking the point to be measured on the curved wall; and a measuring mechanism 5 connected to the laser rangefinder body 1. When the laser rangefinder body 1 cannot measure the distance to the point to be measured on the curved wall under normal conditions, the marking mechanism 4 marks the point to be measured on the curved wall, and the measuring mechanism 5 adjusts the incident angle of the laser rangefinder body 1 on the curved wall. After the laser beam of the laser rangefinder body 1 is perpendicularly irradiated to the point to be measured on the curved wall, the measuring mechanism 5 displays the distance between the laser rangefinder body 1 and the point to be measured on the curved wall before adjustment.

[0022] When in use, the holding mechanism 3 is unfolded to assist the staff in holding the device, thus facilitating the stability of the laser rangefinder body 1. The construction personnel align the laser emitting part of the laser rangefinder body 1 with the wall to be measured (the measurement point on a flat wall or a curved wall). By visually observing the laser landing point, the position of the device is initially adjusted. The "measurement button" on the surface of the laser rangefinder body 1 is pressed. If the laser beam is exactly perpendicular to the wall (a flat wall is naturally perpendicular, and the measurement point on a curved wall meets the perpendicularity condition), the distance measurement module of the laser rangefinder body 1 will quickly collect distance data. At the same time, the data can be saved through the "storage button" for subsequent comparison and analysis. If the data displayed on the screen 50 is stable and there is no fluctuation during the measurement process, it indicates that the measurement is valid. The data can be recorded and the next point can be measured. When the "Measurement" button is pressed, the data measured by the laser rangefinder body 1 fluctuates continuously or is not displayed (indicating that the laser beam is not perpendicularly incident on the curved wall to be measured). The construction personnel mark the point to be measured using the set marking mechanism 4. The measuring mechanism 5 adjusts the incident angle of the laser rangefinder body 1 on the curved wall. After the laser beam of the laser rangefinder body 1 is perpendicularly irradiated on the point to be measured on the curved wall, the measuring mechanism 5 displays the distance between the laser rangefinder body 1 and the point to be measured on the curved wall before adjustment. The point to be measured is locked by the marking mechanism 4, and then adjusted to a vertical state to calculate the original distance. This ensures that every detection point on the curved wall can be accurately measured, and no part of the position is missed due to the limitation of the measurement angle. This ensures the integrity of the construction inspection and avoids the later wall curvature exceeding the standard and rework due to local omissions.

[0023] The holding mechanism 3 includes a mounting base 30, a grip rod 31 inside the mounting base 30, a rotating shaft 32 fixedly connected to one end of the grip rod 31 near the mounting base 30, the rotating shaft 32 being rotatably connected to the inner wall of the mounting base 30, a plurality of rubber strips 33 being fixedly connected to the outer side of the rotating shaft 32, and a plurality of limiting grooves 34 being opened on the inner wall of the mounting base 30 to engage with the rubber strips 33.

[0024] The rubber strip 33 is made of nitrile rubber and is evenly distributed on the outside of the rotating shaft 32, making it easy to be inserted into the limiting groove 34.

[0025] When the gripping mechanism 3 is unfolded, the construction worker holds the grip bar 31 and pulls it outward to make it rotate around the rotating shaft 32. During the rotation, the rubber strip 33 slides along the inner wall of the mounting base 30. When the grip bar 31 rotates to be perpendicular to the support plate 2, the rubber strip 33 is inserted into the corresponding limiting groove 34 under its own elasticity, thus fixing the grip bar 31. At this time, the construction worker can hold the grip bar 31 with one hand to keep the overall stability of the equipment. When folded, external force pushes the handle 31, the rubber strip 33 is compressed and deformed and disengages from the limiting groove 34 again, the handle 31 rotates around the rotating shaft 32 and is stored, after which the handle 31 fits with the support plate 2, reducing the space occupied by the equipment.

[0026] The marking mechanism 4 includes a support frame 40, with a laser module 41 fixedly connected to the inner wall of the support frame 40. The laser module 41 emits a different laser frequency than the laser rangefinder body 1. An adjustment shaft 42 is fixedly connected to the outer side of the support frame 40. The adjustment shaft 42 is rotatably connected to the inner wall of the support plate 2. The laser module 41 is close to the laser emitting part of the laser rangefinder body 1. A limiting member 43 is provided on the outer side of the adjustment shaft 42 to adjust the laser irradiation position of the laser module 41.

[0027] In use, the support frame 40 adopts a U-shaped lightweight aluminum alloy frame, and the laser module 41 is fixed to the inner wall by bolts. The red visible laser module 41 is selected, which has a significantly different infrared laser frequency from the main body 1 of the laser rangefinder to avoid mutual interference.

[0028] When marking the point to be measured, the laser module 41 is activated, and the adjusting shaft 42 is rotated through the limiting component 43. The adjusting shaft 42 rotates the support frame 40, and the support frame 40 rotates the laser module 41, thereby adjusting the illumination angle of the laser module 41 so that the red visible laser emitted by the laser module 41 is accurately aligned with the point to be measured on the curved wall and coincides with the infrared laser landing point of the laser rangefinder body 1. After the red laser landing point is stably aligned with the point to be measured, the position of the laser module 41 is limited by the limiting component 43 to avoid losing the position of the point to be measured during subsequent adjustments.

[0029] The limiting component 43 includes a limiting rod 44 located on the inner wall of the adjusting shaft 42. A sliding groove 45 is provided on the inner wall of the adjusting shaft 42, which is slidably connected to the limiting rod 44. The limiting rod 44 drives the adjusting shaft 42 to rotate synchronously through the sliding groove 45. A compression spring 46 is fixedly connected to one end of the limiting rod 44 near the sliding groove 45. The compression spring 46 is fixed to the inner wall of the sliding groove 45. A knob 47 is fixedly connected to one end of the limiting rod 44 that extends out of the adjusting shaft 42. An iron ring 48 is provided on the outer side of the knob 47. A docking groove 49 is provided on the inner wall of the support plate 2, which is slidably connected to the iron ring 48. A magnet 410 is fixedly connected to the inner wall of the docking groove 49. The side of the magnet 410 near the iron ring 48 is frosted. Through the combined action of friction and magnetism, the knob 47 can be fixed at any angle.

[0030] When the restriction on the adjusting shaft 42 is lifted, the construction personnel first pull the knob 47 outward, so that the knob 47 drives the limiting rod 44 to slide along the inner wall of the sliding groove 45. The limiting rod 44 stretches and compresses the spring 46, and when the knob 47 moves, it drives the iron ring 48 to slide along the inner wall of the docking groove 49, so that the iron ring 48 separates from the magnet piece 410. Thus, when the construction personnel rotate the knob 47, the knob 47 drives the limiting rod 44 to rotate synchronously, the limiting rod 44 drives the adjusting shaft 42 to rotate, and the adjusting shaft 42 drives the support frame 40 to rotate synchronously, thereby adjusting the irradiation angle of the laser module 41. After the red visible laser emitted by the laser module 41 coincides with the infrared laser of the laser rangefinder body 1, the knob 47 stops rotating. The operator releases the knob 47, and the tensioned compression spring 46 drives the limiting rod 44 to reset. The limiting rod 44 then drives the knob 47 to reset. The knob 47 drives the iron ring 48 to approach the magnet 410. The frosted surface of the magnet 410 and the iron ring 48 generate friction. Combined with magnetic attraction, the angle of the laser module 41 is fixed, marking the point to be measured and preventing the loss of the point's position during subsequent adjustments.

[0031] The measuring mechanism 5 includes a display screen 50 located on the surface of the laser rangefinder body 1. A controller 51 is mounted on the surface of the laser rangefinder body 1 and connected to the laser rangefinder body 1. An adjustment plate 52 is slidably connected to the side of the support plate 2 near the laser rangefinder body 1. A connecting rod 53 is fixedly connected to the center of one end of the adjustment plate 52. An angle sensor 54 is provided on the outside of the connecting rod 53 and is connected to the controller 51. The connecting rod 53 is rotatably connected to the inner wall of the support plate 2. A docking iron piece 55 is fixedly connected to the end of the adjustment plate 52 away from the connecting rod 53. An adjustment groove 56 is opened on the side of the laser rangefinder body 1 near the support plate 2. The docking iron piece 55 is slidably connected to the inner wall of the adjustment groove 56. Strong magnetic pieces 57 are fixedly connected to both ends of the adjustment groove 56. A rotating component 58 that drives the connecting rod 53 to rotate is provided on the inner wall of the support plate 2.

[0032] The display screen 50 is integrated with the laser rangefinder body 1. The display screen 50 is divided into upper and lower parts. The upper part of the display screen 50 displays the data directly measured by the laser rangefinder body 1. The controller 51 integrates a data processing module and is connected to the angle sensor 54. The controller 51 calculates the actual distance before adjustment by combining the data measured by the laser rangefinder body 1 and the angle data detected by the angle sensor 54. The lower part of the display screen 50 displays the actual distance calculated by the controller 51.

[0033] When the "measurement" button is pressed, the data on the display screen 50 continues to fluctuate or does not display (indicating that the laser beam is not perpendicularly incident on the curved wall to be measured). The construction personnel mark the to be measured point through the marking mechanism 4. Then, the construction personnel push the main body 1 of the laser rangefinder, so that the docking iron plate 55 slides along the inner wall of the adjustment groove 56 until the docking iron plate 55 is connected to the strong magnetic plate 57 located at the front end of the adjustment groove 56. Since the distance between the two strong magnetic plates 57 is fixed, this distance is denoted as L, and this L is a known length. After the laser rangefinder body 1 is moved, the connecting rod 53 rotates via the rotating component 58. Since the upper half of the display screen 50 shows the measurement data of the laser rangefinder body 1, the construction personnel can judge whether the laser beam emitted by the laser rangefinder body 1 is perpendicularly illuminating the point to be measured by observing the data displayed on the display screen 50. When the data on the display screen 50 stabilizes and stops fluctuating, it indicates that the laser beam has perpendicularly incident on the marked point to be measured on the curved wall. The angle sensor 54 transmits the rotation angle data of the connecting rod 53 to the controller 51, and this angle is recorded as 'a'. This 'a' is a known angle (e.g., ...). Figure 10 (as shown) Since the laser beam of the laser rangefinder body 1 illuminates the point to be measured perpendicularly, let the distance be S, and S is a known distance; Let X be the distance between the laser rangefinder body 1 (before adjustment) and the point to be measured on the curved wall. Then: S²=(L*sin a)²+(X+L*cos a)²; Therefore, based on the above relationship, the distance between the laser rangefinder body 1 and the point to be measured on the curved wall can be directly calculated.

[0034] The rotating component 58 includes a driven wheel 59 fixedly connected to the connecting rod 53. A transmission belt 510 meshes with the outer side of the driven wheel 59. A driven wheel 511 meshes with the side of the transmission belt 510 away from the driven wheel 59. The driven wheel 511 is rotatably connected to the inner wall of the support plate 2. A driving wheel 512 is fixedly connected to the shaft of the driven wheel 511. The driving wheel 512 is rotatably connected to the inner wall of the support plate 2. A transmission gear plate 513 meshes with the outer side of the driving wheel 512. A driving component 514 for adjusting the position of the transmission gear plate 513 is provided on the outer side of the transmission gear plate 513. A limit block 515 is fixedly connected to the outer side of the transmission gear plate 513. The limit block 515 is slidably connected to the inner wall of the support plate 2. A return spring 516 is fixedly connected to the outer side of the limit block 515. The return spring 516 is fixedly connected to the inner wall of the support plate 2.

[0035] When adjusting the irradiation angle of the laser beam of the laser rangefinder body 1, the construction personnel drive the transmission gear plate 513 to move through the drive component 514. The transmission gear plate 513 drives the limit block 515 to move. The limit block 515 stretches or compresses the reset spring 516. The transmission gear plate 513 drives the drive wheel 512 to rotate. The drive wheel 512 drives the driven wheel 511 to rotate. The driven wheel 511 drives the driven wheel 59 to rotate through the transmission belt 510, which in turn drives the connecting rod 53 to rotate around the axis. When the connecting rod 53 rotates, the rotation angle of the connecting rod 53 is detected by the angle sensor 54. When the connecting rod 53 rotates, it drives the adjustment plate 52 to rotate. The adjustment plate 52 changes the angle of the laser rangefinder body 1 through the docking iron plate 55. The laser emission direction of the laser rangefinder body 1 is gradually adjusted towards the direction perpendicular to the measured point on the curved wall. When the data tends to stabilize, it indicates that the laser beam is close to the perpendicular incident state.

[0036] The drive component 514 includes a connecting plate 517 fixedly connected to the transmission gear plate 513. The connecting plate 517 is slidably connected to the inner wall of the support plate 2. Transmission rods 518 are fixedly connected to both sides of the connecting plate 517. A transmission cylinder 519 is fixedly connected to the inner wall of the support plate 2. A piston plate 520 is fixedly connected to the end of the transmission rod 518 near the transmission cylinder 519. A connecting box 521 is connected to the end of the transmission cylinder 519 away from the transmission rod 518. The connecting box 521 is fixedly connected to the inner wall of the support plate 2. An air supply pipe 522 is connected to the outside of the connecting box 521. (The last sentence appears to be incomplete and possibly refers to a grip.) An inflatable bladder 523 is fixedly connected to the surface of the 31. An air supply pipe 522 passes through the support plate 2 and connects to the inflatable bladder 523. A one-way valve 524 is installed on the surface of the inflatable bladder 523. A one-way valve 525 is installed at one end of the air supply pipe 522 near the inflatable bladder 523. The one-way valve 524 only allows external gas to flow into the inflatable bladder 523, and the one-way valve 525 only allows gas inside the inflatable bladder 523 to flow into the air supply pipe 522. An adjusting component 526 is provided on the inner wall of the connecting box 521 to adjust the airflow area between the connecting box 521 and the transmission cylinder 519.

[0037] There are two airbags 523. The two airbags 523 control the connecting rod 53 to rotate clockwise or counterclockwise respectively, so as to control the main body 1 of the laser rangefinder to rotate towards both sides of the support plate 2. When adjusting the laser incident angle, the operator holds the handle 31 and squeezes the air bladder 523 with their fingers. Under pressure, the gas in the air bladder 523 pushes open the one-way valve 525 and enters the connecting box 521 through the air supply pipe 522. If a quick angle adjustment is needed, the airflow area between the connecting box 521 and the transmission cylinder 519 is increased by the adjusting component 526. If a fine adjustment is needed, the airflow area is decreased by the adjusting component 526. After the gas in the connecting box 521 enters the transmission cylinder 519, it pushes the piston plate 520 to slide along the inner wall of the transmission cylinder 519. The piston plate 520 drives the transmission rod 518 to extend outward, which in turn pulls the connecting plate 517 and the transmission tooth plate 513 to slide along the inner wall of the support plate 2. When the inflation bladder 523 is deformed and returns to its original position after the compression is stopped, external gas is replenished into the inflation bladder 523 through the one-way valve 524.

[0038] The adjusting component 526 includes a sealing plate 527 that is slidably and sealingly connected to the inner wall of the connecting box 521. A connecting frame 528 is fixedly connected to one end of the sealing plate 527 away from the connecting box 521. A rotating column 529 is rotatably connected to the surface of the connecting frame 528. An adjusting screw 530 is fixedly connected to the outside of the rotating column 529. The adjusting screw 530 is threadedly connected to the inner wall of the support plate 2.

[0039] When adjusting the airflow area between the connecting box 521 and the transmission cylinder 519, the construction personnel rotate the adjusting screw 530. The adjusting screw 530 is threadedly connected to the inner wall of the support plate 2. The adjusting screw 530 pulls the sealing plate 527 to slide through the connecting frame 528, thereby increasing or decreasing the airflow area between the connecting box 521 and the transmission cylinder 519.

[0040] The inner wall of the connecting box 521 is provided with a pressure stabilizing component 531, which includes a conical plug 532. The inner wall of the connecting box 521 is provided with a flow hole 533. The inner wall of the flow hole 533 is slidably connected to the conical plug 532. A second return spring 534 is fixedly connected to the outer side of the conical plug 532. The end of the second return spring 534 away from the conical plug 532 is fixedly connected to the connecting box 521.

[0041] When the airflow area between the connecting box 521 and the transmission cylinder 519 decreases, after the construction personnel press the inflatable bladder 523, the amount of gas entering the connecting box 521 remains unchanged, but the airflow entering the transmission cylinder 519 decreases, thereby increasing the air pressure inside the connecting box 521. After the air pressure increases, it pushes the conical plug 532 to squeeze the reset spring 534, causing the conical plug 532 to release the seal on the flow hole 533, allowing the excessively high air pressure inside the connecting box 521 to be discharged through the open flow hole 533, in order to ensure that the air pressure is stable within a safe range.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A measuring device for construction engineering, comprising: Main body of the laser rangefinder; Its characteristic feature is that it also includes a support plate, which is located on the back of the laser rangefinder body; A holding mechanism is located on the side of the support plate away from the main body of the laser rangefinder, and the holding mechanism is folded and stored on the surface of the support plate; A marking mechanism is located on the surface of a support plate, and the marking mechanism marks the points to be measured on the curved wall surface; A measuring mechanism is connected to the main body of a laser rangefinder. When the main body of the laser rangefinder cannot measure the distance between itself and the point to be measured on the curved wall under normal conditions, the marking mechanism marks the point to be measured on the curved wall. The measuring mechanism adjusts the incident angle of the main body of the laser rangefinder on the curved wall. After the laser beam of the main body of the laser rangefinder perpendicularly illuminates the point to be measured on the curved wall, the measuring mechanism displays the distance between the main body of the laser rangefinder and the point to be measured on the curved wall before adjustment.

2. The measuring equipment for building engineering according to claim 1, characterized in that: The holding mechanism includes a mounting base, inside which is a grip rod. A rotating shaft is fixedly connected to one end of the grip rod near the mounting base. The rotating shaft is rotatably connected to the inner wall of the mounting base. Multiple rubber strips are fixedly connected to the outer side of the rotating shaft. Multiple limiting grooves that engage with the rubber strips are provided on the inner wall of the mounting base.

3. The measuring equipment for building engineering according to claim 1, characterized in that: The marking mechanism includes a support frame, on the inner wall of which a laser module is fixedly connected. The laser module emits a different laser frequency than the main body of the laser rangefinder. An adjustment shaft is fixedly connected to the outer side of the support frame. The adjustment shaft is rotatably connected to the inner wall of the support plate. The laser module is close to the laser emitting part of the main body of the laser rangefinder. A limiting component is provided on the outer side of the adjustment shaft to adjust the laser irradiation position of the laser module.

4. The measuring equipment for building engineering according to claim 3, characterized in that: The limiting component includes a limiting rod located on the inner wall of the adjusting shaft. The inner wall of the adjusting shaft has a sliding groove that is slidably connected to the limiting rod. The limiting rod drives the adjusting shaft to rotate synchronously through the sliding groove. A compression spring is fixedly connected to one end of the limiting rod near the sliding groove. The compression spring is fixed to the inner wall of the sliding groove. A knob is fixedly connected to one end of the limiting rod that protrudes from the adjusting shaft. An iron ring is provided on the outside of the knob. A docking groove that is slidably connected to the iron ring is provided on the inner wall of the support plate. A magnet is fixedly connected to the inner wall of the docking groove. The side of the magnet near the iron ring is frosted.

5. The measuring equipment for building engineering according to claim 2, characterized in that: The measuring mechanism includes a display screen located on the surface of the laser rangefinder body. A controller is mounted on the surface of the laser rangefinder body and connected to it. An adjustment plate is slidably connected to the support plate near the laser rangefinder body. A connecting rod is fixedly connected to the center of one end of the adjustment plate. An angle sensor is provided on the outer side of the connecting rod and connected to the controller. The connecting rod is rotatably connected to the inner wall of the support plate. A docking iron plate is fixedly connected to the end of the adjustment plate away from the connecting rod. An adjustment groove is provided on the side of the laser rangefinder body near the support plate. The docking iron plate is slidably connected to the inner wall of the adjustment groove. Strong magnetic plates are fixedly connected to both ends of the adjustment groove. A rotating component that drives the connecting rod to rotate is provided on the inner wall of the support plate.

6. The measuring equipment for building engineering according to claim 5, characterized in that: The rotating component includes a driven wheel one fixedly connected to the connecting rod, a transmission belt meshing on the outer side of the driven wheel one, a driven wheel two meshing on the side of the transmission belt away from the driven wheel one, the driven wheel two being rotatably connected to the inner wall of the support plate, a driving wheel fixedly connected to the axis of the driven wheel two, the driving wheel being rotatably connected to the inner wall of the support plate, a transmission gear plate meshing on the outer side of the driving wheel, and a driving component for adjusting the position of the transmission gear plate being provided on the outer side of the transmission gear plate.

7. The measuring equipment for building engineering according to claim 6, characterized in that: A limit block is fixedly connected to the outer side of the transmission gear plate. The limit block is slidably connected to the inner wall of the support plate. A return spring is fixedly connected to the outer side of the limit block. The return spring is fixedly connected to the inner wall of the support plate.

8. The measuring equipment for building engineering according to claim 6, characterized in that: The driving component includes a connecting plate fixedly connected to a transmission gear plate, the connecting plate being slidably connected to the inner wall of a support plate, transmission rods fixedly connected to both sides of the connecting plate, a transmission cylinder fixedly connected to the inner wall of the support plate, a piston plate fixedly connected to the end of the transmission rod near the transmission cylinder, a connecting box connected to the end of the transmission cylinder away from the transmission rod, the connecting box being fixedly connected to the inner wall of the support plate, an air supply pipe connected to the outer side of the connecting box, an inflatable bladder fixedly connected to the surface of the grip, the air supply pipe passing through the support plate and communicating with the inflatable bladder, a one-way valve one installed on the surface of the inflatable bladder, and a one-way valve two installed at the end of the air supply pipe near the inflatable bladder. The one-way valve one allows external gas to flow into the inflatable bladder, while the one-way valve two only allows gas inside the inflatable bladder to flow into the air supply pipe. The inner wall of the connecting box is provided with an adjusting component to adjust the airflow area between the connecting box and the transmission cylinder.

9. The measuring equipment for building engineering according to claim 8, characterized in that: The adjusting component includes a sealing plate that is slidably and sealingly connected to the inner wall of the connecting box. A connecting frame is fixedly connected to the end of the sealing plate away from the connecting box. A rotating column is rotatably connected to the surface of the connecting frame. An adjusting screw is fixedly connected to the outer side of the rotating column. The adjusting screw is threadedly connected to the inner wall of the support plate.

10. The measuring equipment for building engineering according to claim 8, characterized in that: The inner wall of the connecting box is provided with a pressure stabilizing component, which includes a conical plug. The inner wall of the connecting box is provided with a flow hole, and the inner wall of the flow hole is slidably connected to the conical plug. A second return spring is fixedly connected to the outer side of the conical plug, and the end of the second return spring away from the conical plug is fixedly connected to the connecting box.

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