Horizontal marking device for real estate surveying and mapping

Abstract

The invention relates to the technical field of real estate surveying and mapping, and particularly discloses a horizontal marking device for real estate surveying and mapping. A supporting mechanism is installed at the bottom end of the fixing box, an electric rotating table is installed at the top end of the fixing box, an adjusting mechanism is installed at the top end of the electric rotating table, and a fixing mechanism is installed at the top end of the adjusting mechanism; the supporting mechanism comprises an adjusting screw rod, a motor, an adjusting block, a push-pull rod, a supporting frame and a limiting block; through cooperative work of the adjusting screw rod, the motor, the adjusting block, the push-pull rod, the supporting frame and the limiting block, ground pressure distribution is sensed in real time through a built-in pressure sensor, the supporting height is automatically adjusted in combination with a hydraulic damper, flexible adjustment in a three-dimensional space is achieved through a spherical hinge, and the device can automatically adapt to complex terrains and is high in practicability. The stability and environmental adaptability of the device are remarkably improved, and full-automatic horizontal adjustment can be achieved under the condition that frequent manual intervention is not needed.

Description

Technical Field

[0001] The invention belongs to the technical field of real estate surveying and mapping, and particularly relates to a horizontal marking device for real estate surveying and mapping. Background Art

[0002] Real estate surveying and mapping refers to the technical activity of accurately measuring the spatial position, shape, area, ownership boundaries and other elements of land, houses and other attachments and generating legal surveying and mapping results. Its core is to provide high-precision spatial data support for real estate registration, urban planning, engineering construction, etc. The horizontal marking device is a key tool in real estate surveying and mapping. It can generate horizontal reference lines for wall verticality detection, ground flatness measurement, etc. in real estate surveying and mapping.

[0003] In the Chinese patent publication number CN218937399U, a horizontal marking device for real estate surveying is mentioned. The device can use an indicator light as a reference to facilitate surveyors to accurately judge whether the upper surface of the mounting base is adjusted to a horizontal state, and then determine whether the laser is in a horizontal state. After the laser is in a horizontal state, the light emitted by the laser is used to perform horizontal marking with higher accuracy. However, the horizontal marking device is only suitable for flat ground operations. When it is on uneven ground, such as slopes, steps, etc., its adaptability to the environment is significantly insufficient, and it is difficult to quickly adjust to a stable working state, which greatly increases the difficulty of operation. Summary of the Invention

[0004] The object of the present invention is to provide a horizontal marking device for real estate surveying and mapping to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A horizontal marking device for real estate surveying and mapping, comprising:

[0007] Fixed box;

[0008] The bottom end of the fixed box is installed with a supporting mechanism, the top end of the fixed box is installed with an electric rotating platform, the top end of the electric rotating platform is installed with an adjusting mechanism, and the top end of the adjusting mechanism is installed with a fixing mechanism;

[0009] The supporting mechanism includes an adjusting screw, a motor, an adjusting block, a push-pull rod, a supporting frame and a limit block. The adjusting screw is installed at the bottom end of the fixed box through a bearing, the motor is installed at the top end of the adjusting screw, and the adjusting block is threadedly installed on the outer surface of the adjusting screw. The push-pull rods and the supporting frame are each provided with three, and the three push-pull rods are installed on the outer surface of the adjusting block through a connecting seat. The three supporting frames are respectively installed at the other end of the three push-pull rods, and the limit block is installed at the bottom end of the adjusting screw.

[0010] Preferably, a laser level is clamped and installed in the middle of the top of the fixing mechanism, a voice announcer is installed in the middle of the outer wall of the electric rotating table, and a controller is installed on one side of the top of the fixing box.

[0011] Preferably, the support frame includes a hydraulic damper, a mounting frame, a mounting seat, a ball hinge, a pressure sensor and a support plate, the mounting frame is installed on the upper outer surface of the hydraulic damper, and the mounting frame is installed on the outside of the outer surface of the push-pull rod through a movable shaft, the mounting seat is installed on the upper outer surface of the hydraulic damper through a movable shaft, and the top of the mounting seat is installed on the bottom end of the fixed box, the ball hinge is installed on the bottom end of the hydraulic damper, the pressure sensor is installed on the bottom end of the ball hinge, and the support plate is installed on the bottom end of the pressure sensor.

[0012] Preferably, the hydraulic damper, pressure sensor, motor, electric turntable, laser level and voice announcer are all electrically connected to the controller, the bottom end of the support plate is provided with multiple anti-slip grooves, and the bottom end of the laser level is provided with a positioning groove matching the positioning block.

[0013] Preferably, the adjustment mechanism includes a fixed block, a limiting groove, an adjustment frame and an adjustment rack. The fixed block is installed on the top of the electric rotating table. There are two limiting grooves, and the two limiting grooves are respectively opened on the outer walls on both sides of the fixed block. The adjustment frame is slidably installed on the outer surface of the fixed block through the limiting groove, and the adjustment rack is installed on the top of the adjustment frame.

[0014] Preferably, gears are installed between the inner walls of both sides of the adjustment frame via bearings, a driver is installed in the middle of the outer wall of the adjustment frame, and a plurality of tooth grooves are provided on the top of the fixing block.

[0015] Preferably, the adjustment frame includes a fixed frame, an adjustment rod, a rotating frame and a driving motor, the fixed frame is installed on the top of the adjustment frame, the adjustment rod is installed on the upper outer surface of the fixed frame through a bearing, the rotating frame is installed on the outer surface of the adjustment rod, and the driving motor is installed on the upper end of one end of the fixed frame.

[0016] Preferably, the driving motor and the driver are both electrically connected to the controller, the gear is engaged with a plurality of tooth grooves, the adjustment frame is configured as a triangular frame, and limiting protrusions are provided on both side inner walls of the adjustment frame.

[0017] Preferably, the fixing mechanism includes a fixing plate, a positioning block, an adjusting slot, forward and reverse screws and a fixing clamp, the fixing plate is installed on the top of the rotating frame, the positioning block is installed in the middle of the top of the fixing plate, two adjusting slots and two fixing clamps are provided, the two adjusting slots are respectively opened on both sides of the top of the fixing plate, the forward and reverse screws are installed between the inner walls of the two adjusting slots through bearings, and the two fixing clamps are respectively threadedly installed on both sides of the outer surface of the forward and reverse screws.

[0018] Preferably, the fixing clamp is configured as an L-shaped structure, and an avoidance groove is provided in the middle of one end of the fixing clamp close to the laser level.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention realizes the coordinated work of the adjusting screw, motor, adjusting block, push-pull rod, support frame and limit block, senses the ground pressure distribution in real time through the built-in pressure sensor, and automatically adjusts the support height in combination with the hydraulic damper. The ball hinge is used to realize flexible adjustment in three-dimensional space, and can automatically adapt to complex terrain, which significantly improves the stability and environmental adaptability of the device, enables it to achieve fully automatic horizontal adjustment without frequent human intervention, and greatly reduces the difficulty of operation and labor intensity.

[0021] (2) The present invention can achieve flexible adjustment of the angle of the laser level through the coordinated work of components such as the fixed block, the limit slot, the adjustment frame and the adjustment rack, through a precise gear transmission system and a driving device. This design not only improves the accuracy of the horizontal marking, but also enables the device to adapt to different surveying and mapping needs and quickly adjust the marking direction. At the same time, it also provides a more convenient and efficient tool for real estate surveying and mapping work.

[0022] (3) The present invention realizes the coordinated work of the fixing plate, the positioning block, the adjustment slot, the forward and reverse screws and the fixed clamping frame. The positioning block is inserted into the positioning slot of the laser level to achieve the snap-fit ​​positioning. Then the forward and reverse screws are rotated to drive the two fixed clamping frames to move toward the middle, thereby achieving the stable clamping of the laser level. This design not only ensures the installation accuracy and stability of the laser level, but also facilitates quick disassembly and maintenance, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 For the present invention Figure 1 A magnified view of middle A;

[0025] Figure 3 A three-dimensional diagram of the support mechanism of the present invention;

[0026] Figure 4A three-dimensional diagram of the support frame of the present invention;

[0027] Figure 5 is a three-dimensional diagram of the adjustment mechanism of the present invention;

[0028] Figure 6 A three-dimensional diagram of the adjustment frame of the present invention;

[0029] Figure 7 A perspective view of the adjustment frame of the present invention;

[0030] Figure 8 is a three-dimensional diagram of the fixing mechanism of the present invention;

[0031] In the figure: 1. Fixed box; 2. Support mechanism; 3. Electric rotating table; 4. Adjustment mechanism; 5. Fixing mechanism; 6. Laser level; 7. Voice announcer; 8. Controller;

[0032] 21. Adjusting screw; 22. Motor; 23. Adjusting block; 24. Push-pull rod; 25. Support frame; 26. Limit block;

[0033] 251. Hydraulic damper; 252. Mounting bracket; 253. Mounting seat; 254. Ball hinge; 255. Pressure sensor; 256. Support plate;

[0034] 41. Fixed block; 42. Limiting slot; 43. Adjustment frame; 44. Adjustment rack; 45. Gear; 46. Driver; 47. Tooth groove;

[0035] 441, fixed frame; 442, adjustment rod; 443, rotating frame; 444, driving motor;

[0036] 51. Fixed plate; 52. Positioning block; 53. Adjustment slot; 54. Forward and reverse screws; 55. Fixed clamp. DETAILED DESCRIPTION

[0037] 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.

[0038] Example 1:

[0039] See also Figures 1 to 8 As shown, a horizontal marking device for real estate surveying and mapping comprises:

[0040] Fixed box 1;

[0041] The bottom end of the fixed box 1 is installed with a supporting mechanism 2, the top end of the fixed box 1 is installed with an electric rotating platform 3, the top end of the electric rotating platform 3 is installed with an adjusting mechanism 4, and the top end of the adjusting mechanism 4 is installed with a fixing mechanism 5;

[0042] The support mechanism 2 includes an adjusting screw 21, a motor 22, an adjusting block 23, a push-pull rod 24, a support frame 25 and a limit block 26. The adjusting screw 21 is installed at the bottom end of the fixed box 1 through a bearing, the motor 22 is installed at the top of the adjusting screw 21, the adjusting block 23 is threadedly installed on the outer surface of the adjusting screw 21, and there are three push-pull rods 24 and three support frames 25. The three push-pull rods 24 are all installed on the outer surface of the adjusting block 23 through a connecting seat. The three support frames 25 are respectively installed on the other end of the three push-pull rods 24, and the limit block 26 is installed at the bottom end of the adjusting screw 21.

[0043] Depend on Figures 1 to 4 It can be seen that a laser level 6 is clamped and installed in the middle of the top of the fixing mechanism 5, a voice announcer 7 is installed in the middle of the outer wall of the electric rotating table 3, and a controller 8 is installed on one side of the top of the fixing box 1;

[0044] The support frame 25 includes a hydraulic damper 251, a mounting frame 252, a mounting seat 253, a ball hinge 254, a pressure sensor 255 and a support plate 256. The mounting frame 252 is installed on the upper outer surface of the hydraulic damper 251, and the mounting frame 252 is installed on the outside of the outer surface of the push-pull rod 24 through a movable shaft. The mounting seat 253 is installed on the upper outer surface of the hydraulic damper 251 through a movable shaft, and the top of the mounting seat 253 is installed on the bottom end of the fixed box 1. The ball hinge 254 is installed on the bottom end of the hydraulic damper 251, the pressure sensor 255 is installed on the bottom end of the ball hinge 254, and the support plate 256 is installed on the bottom end of the pressure sensor 255.

[0045] As can be seen from the above, when the horizontal marking device is used to survey and map real estate, the motor 22 is started and drives the adjusting screw 21 to rotate, and the adjusting block 23 will move up and down along the adjusting screw 21. This movement is transmitted to the three support frames 25 through the three push-pull rods 24, realizing the synchronous expansion of the three support frames 25, so that the three support frames 25 can stably support the fixed box 1 together, and during the placement of the device, the support plate 256 is in direct contact with the ground, and the multiple anti-slip grooves at its bottom end increase the friction with the ground, thereby improving the stability of the device. The ball hinge 254 is installed at the bottom end of the hydraulic damper 251, allowing the support plate 256 to be flexibly adjusted in three-dimensional space to adapt to unevenness. The pressure sensor 255 is installed at the bottom end of the ball hinge 254 to sense the pressure distribution of the support plate 256 in real time and feed back the information to the controller 8. The controller 8 automatically adjusts the support height by controlling the hydraulic damper 251 according to the received data. This process is combined with the PID control algorithm to realize automatic compensation for ground unevenness, ensuring full-automatic horizontal adjustment of the device under complex terrain, significantly improving the stability and environmental adaptability of the device, and realizing full-automatic horizontal adjustment without frequent manual intervention, which greatly reduces the difficulty of operation and labor intensity, while ensuring the accuracy of the horizontal marking line, providing more reliable and efficient technical support for real estate surveying and mapping.

[0046] Specifically, refer to Figures 1 to 4 As shown, the hydraulic damper 251, the pressure sensor 255, the motor 22, the electric rotating table 3, the laser level 6 and the voice announcer 7 are all electrically connected to the controller 8, the bottom end of the support plate 256 is provided with a plurality of anti-slip grooves, and the bottom end of the laser level 6 is provided with a positioning groove matching the positioning block 52.

[0047] From the above, it can be seen that these components are all under the unified control of the controller 8. The controller 8 can start, stop, adjust and other operations on these components according to the preset program or external input instructions to realize the automatic operation and coordinated work of the device. When the device is placed, the support plate 256 contacts the ground or other supporting surface. The anti-slip groove can increase the friction between the support plate 256 and the contact surface, thereby ensuring the stability of the device and the accuracy of the horizontal marking. The cooperation between the positioning block 52 and the positioning groove can realize the precise positioning of the laser level 6 on the fixing mechanism 5.

[0048] Example 2:

[0049] refer to Figures 5 to 7As shown, the adjustment mechanism 4 includes a fixed block 41, a limiting groove 42, an adjustment frame 43 and an adjustment rack 44. The fixed block 41 is mounted on the top of the electric rotating table 3. Two limiting grooves 42 are provided, and the two limiting grooves 42 are respectively provided on the outer walls of both sides of the fixed block 41. The adjustment frame 43 is slidably mounted on the outer surface of the fixed block 41 through the limiting grooves 42. The adjustment rack 44 is mounted on the top of the adjustment frame 43.

[0050] A gear 45 is mounted between the inner walls of the adjustment frame 43 via bearings. A driver 46 is mounted in the middle of the outer wall of the adjustment frame 43. A plurality of tooth grooves 47 are formed on the top of the fixed block 41.

[0051] The adjusting frame 44 includes a fixed frame 441, an adjusting rod 442, a rotating frame 443 and a driving motor 444. The fixed frame 441 is installed at the top of the adjusting frame 43, the adjusting rod 442 is installed on the upper outer surface of the fixed frame 441 through a bearing, the rotating frame 443 is installed on the outer surface of the adjusting rod 442, and the driving motor 444 is installed on the upper end of the fixed frame 441.

[0052] As can be seen from the above, when the position of the adjustment frame 43 needs to be adjusted, the driver 46 is started and drives the gear 45 to rotate. Since the gear 45 is engaged with the multiple tooth grooves 47 opened at the top of the fixed block 41, the rotation of the gear 45 will be converted into a linear sliding of the adjustment frame 43 along the fixed block 41, thereby realizing precise control of the position of the adjustment frame 43. The adjustment frame 44 is installed at the top of the adjustment frame 43 and is a key component in the adjustment mechanism 4 for further adjusting the angle of the laser level 6. When the angle of the laser level 6 needs to be adjusted, the drive motor 444 is started and drives the rotating frame 443 to rotate around the adjustment rod 442. Since the rotating frame 443 is connected to the laser level 6 through the fixing mechanism 5, the rotation of the rotating frame 443 will directly drive the laser level 6 to adjust the angle, thereby realizing flexible adjustment of the angle of the laser level 6. This design not only improves the accuracy of the horizontal marking, but also enables the device to adapt to different surveying and mapping requirements and quickly adjust the marking direction. In summary, the adjustment mechanism 4 realizes precise adjustment of the horizontal position and angle of the laser level 6, providing more flexible and efficient technical support for real estate surveying and mapping.

[0053] Preferably, reference Figures 5 to 7 As shown, the driving motor 444 and the driver 46 are both electrically connected to the controller 8, the gear 45 is engaged with the plurality of tooth grooves 47, the adjustment frame 43 is configured as a triangular frame, and limiting protrusions are provided on the inner walls on both sides of the adjustment frame 43.

[0054] As can be seen from the above, the controller 8 can accurately control the drive motor 444 and the driver 46. When the driver 46 drives the gear 45 to rotate, since the gear 45 is engaged with the tooth groove 47, the rotation of the gear 45 will drive the adjustment frame 43 to move along the fixed block 41, thereby realizing the adjustment of the position of the adjustment frame 43. The triangular frame structure has high stability and strength, can withstand large external forces, and ensure the stability of the adjustment frame 43 during the movement and support process. The limiting protrusion can limit the position of the adjustment frame 43 during the movement to prevent the adjustment frame 43 from separating from the fixed block 41.

[0055] Example 3:

[0056] refer to Figure 8 As shown, the fixing mechanism 5 includes a fixing plate 51, a positioning block 52, an adjusting slot 53, a forward and reverse screw 54 and a fixing clamp 55. The fixing plate 51 is installed at the top of the rotating frame 443, and the positioning block 52 is installed in the middle of the top of the fixing plate 51. There are two adjusting slots 53 and two fixing clamps 55. The two adjusting slots 53 are respectively opened on both sides of the top of the fixing plate 51. The forward and reverse screw 54 is installed between the inner walls of the two adjusting slots 53 through bearings, and the two fixing clamps 55 are respectively threaded on both sides of the outer surface of the forward and reverse screw 54.

[0057] As can be seen from the above, when installing the laser level 6, first place the laser level 6 on the fixed plate 51 and perform preliminary positioning through the positioning block 52 to ensure that the laser level 6 can be accurately aligned with the center position during installation. Then, rotate the forward and reverse screws 54 to move the two fixed clamps 55 inward at the same time to gradually clamp the laser level 6. Since the fixed clamp 55 is set to an L-shaped structure and an avoidance groove is opened in the middle of one end near the laser level 6, this design can ensure that the fixed clamp 55 avoids certain parts of the laser level 6 while clamping the laser level 6, thereby achieving laser leveling. The instrument 6 is firmly installed. When the laser level 6 needs to be disassembled, it is only necessary to rotate the forward and reverse screws 54 in the opposite direction to move the two fixed clamps 55 outward at the same time, and the laser level 6 can be easily removed. This design not only realizes the rapid disassembly and assembly of the laser level 6, but also ensures the stability and accuracy of the laser level 6 during the installation process, improves work efficiency, and provides more convenient and efficient technical support for real estate surveying and mapping. At the same time, the coordinated work of the fixing mechanism 5 and the adjusting mechanism 4 further enhances the performance and reliability of the entire horizontal marking device, and provides more accurate and reliable technical support for real estate surveying and mapping.

[0058] Preferably, reference Figure 8 As shown, the fixing bracket 55 is configured as an L-shaped structure, and an avoidance groove is provided in the middle of one end of the fixing bracket 55 close to the laser level 6 .

[0059] From the above, it can be seen that the L-shaped fixed clamp 55 can better fix the laser level 6 and provide a stable clamping force. The design of the avoidance groove can prevent the fixed clamp 55 from avoiding certain parts of the laser level 6 when clamping the laser level 6, thereby ensuring that the laser level 6 is firmly clamped.

[0060] Application examples:

[0061] This design is suitable for real estate surveying and mapping work in complex terrain environments such as sloping ground, stepped ground and uneven ground. Its application principle is mainly based on the adaptive adjustment of the support mechanism 2, flexible adjustment in three-dimensional space and precise horizontal marking technology. The built-in pressure sensor 255 senses the ground pressure distribution, and the hydraulic damper 251 automatically adjusts the support height. Combined with the ball hinge 254, fully automatic horizontal adjustment is achieved without manual intervention. The angle of the laser level 6 can be flexibly adjusted through the adjustment mechanism 4, and the laser level 6 can be quickly disassembled and replaced through the fixing mechanism 5. In the above application environment, the device can quickly adapt to complex terrain and improve work efficiency. At the same time, it ensures the accuracy of the horizontal marking, enhances the stability of the device in complex terrain, simplifies the operation process, reduces the operation difficulty and labor intensity, and provides reliable and efficient technical support for real estate surveying and mapping.

[0062] 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 horizontal marking device for real estate surveying and mapping, characterized in that: include: Fixed box (1); The bottom end of the fixed box (1) is equipped with a supporting mechanism (2), the top end of the fixed box (1) is equipped with an electric rotating platform (3), the top end of the electric rotating platform (3) is equipped with an adjusting mechanism (4), and the top end of the adjusting mechanism (4) is equipped with a fixing mechanism (5); The support mechanism (2) comprises an adjusting screw (21), a motor (22), an adjusting block (23), a push-pull rod (24), a support frame (25) and a limit block (26); the adjusting screw (21) is mounted on the bottom end of the fixed box (1) through a bearing; the motor (22) is mounted on the top end of the adjusting screw (21); the adjusting block (23) is threadedly mounted on the outer surface of the adjusting screw (21); three push-pull rods (24) and three support frames (25) are provided; the three push-pull rods (24) are mounted on the outer surface of the adjusting block (23) through a connecting seat; the three support frames (25) are respectively mounted on the other end of the three push-pull rods (24); and the limit block (26) is mounted on the bottom end of the adjusting screw (21).

2. The horizontal marking device for real estate surveying and mapping according to claim 1, characterized in that: A laser level (6) is clamped and mounted in the middle of the top of the fixing mechanism (5), a voice announcer (7) is mounted in the middle of the outer wall of the electric rotating platform (3), and a controller (8) is mounted on one side of the top of the fixing box (1).

3. The horizontal marking device for real estate surveying and mapping according to claim 2, characterized in that: The support frame (25) includes a hydraulic damper (251), a mounting frame (252), a mounting seat (253), a ball hinge (254), a pressure sensor (255) and a support plate (256). The mounting frame (252) is mounted on the upper outer surface of the hydraulic damper (251), and the mounting frame (252) is mounted on the outer side of the outer surface of the push-pull rod (24) through a movable shaft. The mounting seat (253) is mounted on the upper outer surface of the hydraulic damper (251) through a movable shaft, and the top end of the mounting seat (253) is mounted on the bottom end of the fixed box (1). The ball hinge (254) is mounted on the bottom end of the hydraulic damper (251), the pressure sensor (255) is mounted on the bottom end of the ball hinge (254), and the support plate (256) is mounted on the bottom end of the pressure sensor (255).

4. The horizontal marking device for real estate surveying and mapping according to claim 3, characterized in that: The hydraulic damper (251), the pressure sensor (255), the motor (22), the electric rotating platform (3), the laser level (6) and the voice announcer (7) are all electrically connected to the controller (8); a plurality of anti-slip grooves are provided at the bottom end of the support plate (256); and a positioning groove matching the positioning block (52) is provided at the bottom end of the laser level (6).

5. The horizontal marking device for real estate surveying and mapping according to claim 1, characterized in that: The adjusting mechanism (4) comprises a fixed block (41), a limiting groove (42), an adjusting frame (43) and an adjusting rack (44); the fixed block (41) is mounted on the top of the electric rotating table (3); two limiting grooves (42) are provided, and the two limiting grooves (42) are respectively provided on the outer walls of both sides of the fixed block (41); the adjusting frame (43) is slidably mounted on the outer surface of the fixed block (41) through the limiting grooves (42); and the adjusting rack (44) is mounted on the top of the adjusting frame (43).

6. The horizontal marking device for real estate surveying and mapping according to claim 5, characterized in that: A gear (45) is installed between the inner walls of both sides of the adjustment frame (43) via bearings. A driver (46) is installed in the middle of the outer wall of the adjustment frame (43). The top of the fixed block (41) is provided with a plurality of tooth grooves (47).

7. The horizontal marking device for real estate surveying and mapping according to claim 6, characterized in that: The adjustment frame (44) comprises a fixed frame (441), an adjustment rod (442), a rotating frame (443) and a driving motor (444); the fixed frame (441) is mounted on the top of the adjustment frame (43); the adjustment rod (442) is mounted on the upper outer surface of the fixed frame (441) through a bearing; the rotating frame (443) is mounted on the outer surface of the adjustment rod (442); and the driving motor (444) is mounted on the upper end of one end of the fixed frame (441).

8. The horizontal marking device for real estate surveying and mapping according to claim 7, characterized in that: The driving motor (444) and the driver (46) are both electrically connected to the controller (8), the gear (45) is meshed with a plurality of tooth grooves (47), the adjustment frame (43) is configured as a triangular frame, and limiting protrusions are provided on both sides of the inner wall of the adjustment frame (43).

9. The horizontal marking device for real estate surveying and mapping according to claim 1, characterized in that: The fixing mechanism (5) comprises a fixing plate (51), a positioning block (52), an adjusting groove (53), a forward and reverse screw rod (54) and a fixing clamp (55), wherein the fixing plate (51) is mounted on the top of the rotating frame (443), the positioning block (52) is mounted on the middle of the top of the fixing plate (51), two adjusting grooves (53) and two fixing clamps (55) are provided, the two adjusting grooves (53) are respectively opened on both sides of the top of the fixing plate (51), the forward and reverse screw rod (54) is mounted between the inner walls of the two adjusting grooves (53) through a bearing, and the two fixing clamps (55) are respectively threadedly mounted on both sides of the outer surface of the forward and reverse screw rod (54).

10. The horizontal marking device for real estate surveying and mapping according to claim 9, characterized in that: The fixed clamping frame (55) is configured as an L-shaped structure, and a avoidance groove is provided in the middle of one end of the fixed clamping frame (55) close to the laser level (6).

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