Topographic surveying and mapping device for building

Abstract

The invention relates to the technical field of surveying and mapping devices, and discloses a topographic surveying and mapping device for building, the topographic surveying and mapping device comprises a box body, a surveying and mapping instrument is arranged above the box body, the box body is provided with a direction adjusting mechanism, and the direction adjusting mechanism comprises a storage box, a mounting frame, a first threaded rod, a threaded sleeve, a rotating disc, a rotating cylinder, a rotating shaft, a sliding groove, a pressing rod and a rotating gear; the storage box is fixedly connected to the top of the box body, and a cover plate is hinged to the top of the storage box. The surveying instrument can be stored by arranging the storage box and the cover plate, the surveying instrument is prevented from being collided when not used, the surveying instrument can be lifted by arranging a first threaded rod, a threaded sleeve, a rotating disc, a rotating cylinder, a rotating shaft, a sliding groove, a pressing rod, a rotating gear and a gear set, and the surveying instrument can be driven to rotate by arranging a limiting groove, an annular groove and a limiting block; therefore, the surveying angle of the surveying instrument is adjusted, and the surveying effect of the surveying instrument is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of surveying and mapping devices, in particular to a topographic surveying and mapping device for construction. Background Art

[0002] With the rapid development of computer technology and Internet technology, surveying and mapping instruments are also developing in the direction of digitalization and miniaturization. The surveying and mapping devices currently used are difficult to achieve precise adjustment of surveying angles and surveying heights. Topographic surveying is the measurement of objects, landforms and other geographical elements according to the requirements of specifications and diagrams. The projected position and elevation of objects and landforms on the earth's surface on the horizontal plane are measured, and they are reduced to a certain scale and drawn into a map with symbols and annotations. Topographic surveying is the basis of mapping, construction and other work.

[0003] According to a Chinese patent with the announcement number "CN219178550U", a topographic surveying and mapping device for architectural engineering design is disclosed, which includes a top plate, a support assembly is installed at the bottom of the top plate, a vertically movable lifting rod is installed at the top of the top plate, a mounting plate is fixed to the top of the lifting rod, a measuring instrument is installed on the top of the mounting plate, two protective shells are slidably installed on the top of the top plate, and the inner side walls of the two protective shells are vertically slidably installed with sliders, and the outer wall of the lifting rod is rotatably installed with two swing rods, and the ends of the two swing rods away from the lifting rod are respectively rotatably installed on the outer walls of the two sliders. The utility model cooperates between the structures, and when the lifting rod rises, the measuring instrument can be taken out of the protective shell, and the supporting legs are unfolded at the same time, which is convenient for erection and use. When the lifting rod moves down, the measuring instrument is stored back in the protective shell, and the supporting legs are folded at the same time, which plays a role of storing and protecting the measuring instrument, and also reduces the occupied area during storage.

[0004] When the above patent is in use, the measuring instrument is taken out of the protective shell by raising the lifting rod, and the supporting legs are unfolded at the same time. However, the measuring instrument cannot be adjusted and cannot adapt well to the construction environment, thus affecting the measurement effect. Therefore, a topographic surveying and mapping device for construction is proposed to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a topographic surveying and mapping device for construction in view of the deficiencies in the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a topographic surveying and mapping device for construction, comprising a box, a surveying and mapping instrument is arranged on the top of the box, a direction adjustment mechanism is arranged on the box, and the direction adjustment mechanism comprises a storage box, a mounting frame, a first threaded rod, a threaded sleeve, a rotating disk, a rotating drum, a rotating shaft, a sliding groove, a pressure rod, and a rotating gear; The storage box is fixedly connected to the top of the box body, and a cover plate is hinged on the top of the storage box. The mounting frame is arranged on the top of the inner wall of the storage box. The first threaded rod passes through the mounting frame through a bearing and is rotatably connected to the mounting frame. The threaded sleeve is sleeved on the first threaded rod. The rotating disk is fixedly connected to the top of the threaded sleeve, and the top of the rotating disk is hinged to one end of the surveying instrument through a hinge block. The rotating drum passes through the top of the storage box through a bearing, the rotating shaft is slidably connected to the inner wall of the rotating drum, and a first knob is fixedly connected to the top of the rotating shaft, the sliding groove is opened on the outer wall of the rotating drum, the pressure rod is fixedly connected to the outer wall of the rotating shaft, and the pressure rod passes through the sliding groove and is slidably connected to the inner wall of the sliding groove, the rotating gear is fixedly connected to the bottom of the first threaded rod, and the rotating gear is transmission-connected to the rotating drum through a gear set.

[0007] Preferably, a limiting groove is provided on the inner wall of the storage box, an annular groove is provided on the inner wall of the storage box, and the annular groove is connected to the top of the limiting groove, the outer wall of the rotating disk is fixedly connected to the limiting block, and the limiting block is slidably connected to the inner wall of the limiting groove.

[0008] Preferably, a first telescopic rod is fixedly installed on the top of the inner wall of the box body, the bottom of the movable end of the first telescopic rod is fixedly connected to a limit plate, and the limit plate is sleeved on the outside of the rotating drum, and a spring is sleeved on the outside of the first telescopic rod, and the two ends of the spring are respectively fixedly connected to the top of the inner wall of the box body and the top of the limit plate, and the bottom of the limit plate is fixedly connected to a clamping block, and the clamping block is clamped with the gear at the bottom of the rotating drum.

[0009] Preferably, a fixed block is fixedly connected to the top of the rotating disk, a second threaded rod is rotatably connected to the fixed block via a bearing, a moving block is threadedly connected to the second threaded rod, and the moving block is slidingly connected to the top of the rotating disk, a connecting rod is hinged at the top of the moving block, and the other end of the connecting rod is hinged to the bottom of the surveying instrument, and a second knob is provided at one end of the second threaded rod.

[0010] Preferably, a frame is provided on the outside of the box, and a drain outlet is provided at the bottom of the inner wall of the frame. An angle adjustment mechanism is provided on the box, and the angle adjustment mechanism includes a second telescopic rod, a universal joint, and an electric push rod. The second telescopic rod is provided at the bottom of the box, and the second telescopic rod is connected to the bottom of the inner wall of the frame through a universal joint. The electric push rod is fixedly installed at the bottom of the inner wall of the frame, and the top of the movable end of the electric push rod is in contact with the bottom of the box.

[0011] Preferably, a Hall sensor is arranged at the bottom of the inner wall of the box body, and a magnet block is arranged at the top of the rotating gear, and the magnet block is located directly above the Hall sensor.

[0012] Preferably, the number of the Hall sensors and the number of the electric push rods are both eight, and the eight electric push rods are arranged around the outside of the universal joint.

[0013] Preferably, a height adjustment mechanism is provided at the bottom of the frame, and the height adjustment mechanism includes a third threaded rod, a threaded block, a hinged rod, a sliding sleeve, and a pointed cone. The third threaded rod is rotatably connected to the bottom of the frame through a bearing, and a third knob is provided at the bottom of the third threaded rod. The threaded block is threadedly connected to the third threaded rod, one end of the hinged rod is hinged to the threaded block, the sliding sleeve is hinged to the other end of the hinged rod, and the pointed cone is slidably connected to the inner wall of the sliding sleeve.

[0014] Preferably, a lifting plate is fixedly connected to the top of the threaded block, and the lifting plate is sleeved on the outer wall of the third threaded rod, a third telescopic rod is fixedly installed on the bottom of the lifting plate, and the movable end of the third telescopic rod passes through the bottom of the lifting plate and is fixedly connected to the bottom of the frame.

[0015] Preferably, the number of the articulated rods, the sliding sleeves, the pointed cones and the third telescopic rods are all three, the three articulated rods are arranged around the outer wall of the threaded block, the three third telescopic rods are arranged around the lifting plate, and the three articulated rods and the three third telescopic rods are arranged alternately.

[0016] The present invention adopts the above technical solution to bring the following beneficial effects: 1. A topographic surveying and mapping device for construction can store a surveying and mapping instrument by arranging a storage box and a cover plate to prevent the surveying and mapping instrument from being bumped when not in use; the surveying and mapping instrument can be raised and lowered by arranging a first threaded rod, a threaded sleeve, a rotating disk, a rotating drum, a rotating shaft, a slide groove, a pressure rod, a rotating gear and a gear set; the surveying and mapping instrument can be driven to rotate by arranging a limit groove, an annular groove and a limit block, thereby adjusting the surveying and mapping angle of the surveying and mapping instrument, thereby improving the surveying and mapping effect of the surveying and mapping instrument.

[0017] 2. This kind of topographic surveying and mapping device for construction can limit the gear under the rotating drum by setting the first telescopic rod, the limit plate, the spring and the clamping block, so that the surveying and mapping instrument is more stable after the direction adjustment is completed. By setting the second threaded rod, the moving block and the connecting rod, the angle between the surveying and mapping instrument and the rotating disk can be adjusted, thereby achieving the purpose of fine-tuning the angle of the surveying and mapping instrument.

[0018] 3. This kind of building topographic surveying and mapping device can adjust the inclination angle of the box by setting a second telescopic rod, a universal joint and an electric push rod, so as to achieve the purpose of adjusting the angle of the surveying and mapping instrument. By setting a Hall sensor and a magnet block, the corresponding electric push rod can be started, so that after the direction of the surveying and mapping instrument is adjusted, the corresponding angle can be adjusted according to the direction of the surveying and mapping instrument, thereby improving the surveying and mapping effect of the surveying and mapping instrument.

[0019] 4. This kind of topographic surveying and mapping device for construction is convenient for fixing the device on the ground by arranging a hinged rod, a sliding sleeve and a pointed cone, thereby improving the surveying and mapping stability of the surveying and mapping instrument. The frame can be driven to rise and fall through the third threaded rod, the threaded block, the lifting plate and the third telescopic rod, thereby driving the surveying and mapping instrument to rise and fall, thereby facilitating better use of the surveying and mapping instrument for surveying and mapping, and improving the surveying and mapping effect of the surveying and mapping instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front schematic diagram of the present invention; Figure 2 It is a schematic diagram of the back side of the present invention; Figure 3 It is a first front cross-sectional schematic diagram of the present invention; Figure 4 It is a second front cross-sectional schematic diagram of the present invention; Figure 5 It is a schematic diagram of the direction adjustment mechanism of the present invention; Figure 6 It is a side schematic diagram of the direction adjustment mechanism of the present invention; Figure 7 This is an enlarged schematic diagram of point A of the present invention; Figure 8 This is an enlarged schematic diagram of point B of the present invention; Fig. 9 It is an enlarged schematic diagram of point C of the present invention.

[0021] In the figure: 1, box; 2, surveying instrument; 3, direction adjustment mechanism; 31, storage box; 32, mounting frame; 33, first threaded rod; 34, threaded sleeve; 35, rotating disk; 36, rotating drum; 37, rotating shaft; 38, slide groove; 39, pressure rod; 310, rotating gear; 311, limiting groove; 312, annular groove; 313, limiting block; 314, first telescopic rod; 315, limiting disk; 316, spring; 31 7. Block; 318. Second threaded rod; 319. Moving block; 320. Connecting rod; 4. Frame; 5. Angle adjustment mechanism; 51. Second telescopic rod; 52. Universal joint; 53. Electric push rod; 54. Hall sensor; 55. Magnet block; 6. Height adjustment mechanism; 61. Third threaded rod; 62. Threaded block; 63. Articulated rod; 64. Sliding sleeve; 65. Cone; 66. Lifting plate; 67. Third telescopic rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0026] See also Figure 1-9 One embodiment of the present invention is: a topographic surveying and mapping device for construction, comprising a box 1, a surveying and mapping instrument 2 is arranged above the box 1, a direction adjustment mechanism 3 is arranged on the box 1, and the direction adjustment mechanism 3 comprises a storage box 31, a mounting frame 32, a first threaded rod 33, a threaded sleeve 34, a rotating disk 35, a rotating drum 36, a rotating shaft 37, a sliding groove 38, a pressure rod 39, and a rotating gear 310; The storage box 31 is fixedly connected to the top of the box body 1, and a cover plate is hinged on the top of the storage box 31. The mounting frame 32 is arranged on the top of the inner wall of the storage box 31. The first threaded rod 33 passes through the mounting frame 32 through a bearing and is rotatably connected to the mounting frame 32. The threaded sleeve 34 is sleeved on the first threaded rod 33. The rotating disk 35 is fixedly connected to the top of the threaded sleeve 34, and the top of the rotating disk 35 is hinged to one end of the surveying instrument 2 through a hinge block. The rotating drum 36 passes through the top of the storage box 31 through a bearing, the rotating shaft 37 is slidably connected to the inner wall of the rotating drum 36, and the top of the rotating shaft 37 is fixedly connected with a first knob, a slide groove 38 is opened on the outer wall of the rotating drum 36, a pressure rod 39 is fixedly connected to the outer wall of the rotating shaft 37, and the pressure rod 39 passes through the slide groove 38 and is slidably connected to the inner wall of the slide groove 38, the rotating gear 310 is fixedly connected to the bottom of the first threaded rod 33, and the rotating gear 310 is transmission connected to the rotating drum 36 through a gear set.

[0027] Preferably, a limiting groove 311 is opened on the inner wall of the storage box 31, an annular groove 312 is opened on the inner wall of the storage box 31, and the annular groove 312 is connected to the top of the limiting groove 311, the outer wall of the rotating disk 35 is fixedly connected to the limiting block 313, and the limiting block 313 is slidably connected to the inner wall of the limiting groove 311.

[0028] Preferably, a first telescopic rod 314 is fixedly installed on the top of the inner wall of the box body 1, and the bottom of the movable end of the first telescopic rod 314 is fixedly connected to a limiting plate 315, and the limiting plate 315 is sleeved on the outside of the rotating drum 36. A spring 316 is sleeved on the outside of the first telescopic rod 314, and the two ends of the spring 316 are respectively fixedly connected to the top of the inner wall of the box body 1 and the top of the limiting plate 315, and a clamping block 317 is fixedly connected to the bottom of the limiting plate 315, and the clamping block 317 is clamped with the gear at the bottom of the rotating drum 36.

[0029] Preferably, a fixed block is fixedly connected to the top of the rotating disk 35, and a second threaded rod 318 is rotatably connected to the fixed block through a bearing. A moving block 319 is threadedly connected to the second threaded rod 318, and the moving block 319 is slidingly connected to the top of the rotating disk 35. A connecting rod 320 is hinged at the top of the moving block 319, and the other end of the connecting rod 320 is hinged to the bottom of the surveying instrument 2, and a second knob is provided at one end of the second threaded rod 318.

[0030] Preferably, a frame 4 is provided on the outside of the box body 1, and a drainage outlet is opened at the bottom of the inner wall of the frame body 4. An angle adjustment mechanism 5 is provided on the box body 1, and the angle adjustment mechanism 5 includes a second telescopic rod 51, a universal joint 52, and an electric push rod 53. The second telescopic rod 51 is arranged at the bottom of the box body 1, and the second telescopic rod 51 is connected to the bottom of the inner wall of the frame body 4 through the universal joint 52. The electric push rod 53 is fixedly installed at the bottom of the inner wall of the frame body 4, and the top of the movable end of the electric push rod 53 contacts the bottom of the box body 1.

[0031] Preferably, a Hall sensor 54 is disposed at the bottom of the inner wall of the box body 1 , and a magnet block 55 is disposed at the top of the rotating gear 310 , and the magnet block 55 is located directly above the Hall sensor 54 .

[0032] Preferably, the number of the Hall sensors 54 and the number of the electric push rods 53 are both eight, and the eight electric push rods 5353 are arranged around the outside of the universal joint 52.

[0033] The first threaded rod 33 rotates, and the rotation of the first threaded rod 33 drives the threaded sleeve 34 to rise under the action of the limiting groove 311 and the limiting block 312, thereby driving the surveying instrument 2 above the rotating disk 35 to extend out of the storage box 31. When the limiting block 313 rises into the annular groove 312, the rotation of the first threaded rod 33 drives the threaded sleeve 34 to rotate, thereby adjusting the direction of the surveying instrument 2. At the same time, the rotation of the rotating gear 310 drives the first threaded rod 33 to rotate. The magnet block 55 above is driven to rotate, and the magnet block 55 and the tail end of the surveying instrument 2 are in the same direction. When the direction adjustment of the surveying instrument 2 is completed, the first knob is loosened, and the clamping block 317 is driven to rise under the action of the spring 316, thereby clamping the gear under the rotating drum 36, so that the direction adjustment of the surveying instrument 2 is more stable. At the same time, the rotation of the magnet block 55 will cause the corresponding Hall sensor 54 below to detect the change of the magnetic field. By starting the electric push rod 53 corresponding to the Hall sensor 54, the electric push rod 53 drives the box 1 to tilt under the action of the second telescopic rod 51 and the universal joint 52, so as to adjust the angle of the surveying instrument 2. Then, by turning the second knob, the second knob drives the second threaded rod 318 to rotate, thereby driving the moving block 319 to slide. The sliding of the moving block 319 will drive the angle of the surveying instrument 2 to be fine-tuned through the connecting rod 320, so that the angle adjustment of the surveying instrument 2 is more accurate.

[0034] See also Figure 1-9 On the basis of the above embodiment, in another embodiment of the present invention, preferably, a height adjustment mechanism 6 is provided at the bottom of the frame 4, and the height adjustment mechanism 6 includes a third threaded rod 61, a threaded block 62, a hinged rod 63, a sliding sleeve 64, and a pointed cone 65. The third threaded rod 61 is rotatably connected to the bottom of the frame 4 through a bearing, and a third knob is provided at the bottom of the third threaded rod 61. The threaded block 62 is threadedly connected to the third threaded rod 61, one end of the hinged rod 63 is hinged to the threaded block 62, the sliding sleeve 64 is hinged to the other end of the hinged rod 63, and the pointed cone 65 is slidably connected to the inner wall of the sliding sleeve 64.

[0035] Preferably, a lifting plate 66 is fixedly connected to the top of the threaded block 62, and the lifting plate 66 is sleeved on the outer wall of the third threaded rod 61, and a third telescopic rod 67 is fixedly installed on the bottom of the lifting plate 66, and the movable end of the third telescopic rod 67 passes through the bottom of the lifting plate 66 and is fixedly connected to the bottom of the frame 4.

[0036] Preferably, the number of the articulated rods 63, the sliding sleeve 64, the pointed cone 65 and the third telescopic rod 67 are all three, the three articulated rods 63 are arranged around the outer wall of the threaded block 62, the three third telescopic rods 67 are arranged around the lifting plate 66, and the three articulated rods 63 and the three third telescopic rods 67 are arranged alternately.

[0037] Working principle: The device is fixed on the ground by the pointed cone 65. At this time, by turning the third knob, the third knob drives the third threaded rod 61 to rotate. Under the restriction of the sliding sleeve 64 and the pointed cone 65, the threaded block 62 is in a stationary state. The rotation of the third threaded rod 61 will cause the frame 4 to be raised or lowered, thereby driving the frame 4 to be raised or lowered, so as to adjust the height of the surveying instrument 2. At the same time, under the restriction of the third telescopic rod 67, the frame 4 cannot rotate, so that the lifting of the frame 4 is more stable.

[0038] The present invention provides a topographic surveying and mapping device for buildings. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A topographic surveying and mapping device for construction, comprising a housing (1), characterized in that: A surveying instrument (2) is arranged above the box (1), and a direction adjustment mechanism (3) is arranged on the box (1), and the direction adjustment mechanism (3) comprises a storage box (31), a mounting frame (32), a first threaded rod (33), a threaded sleeve (34), a rotating disk (35), a rotating drum (36), a rotating shaft (37), a sliding groove (38), a pressure rod (39), and a rotating gear (310); The storage box (31) is fixedly connected to the top of the box body (1), and a cover plate is hingedly connected to the top of the storage box (31); the mounting frame (32) is arranged at the top of the inner wall of the storage box (31); the first threaded rod (33) passes through the mounting frame (32) through a bearing and is rotatably connected to the mounting frame (32); the threaded sleeve (34) is sleeved on the first threaded rod (33); the rotating disk (35) is fixedly connected to the top of the threaded sleeve (34), and the top of the rotating disk (35) is hingedly connected to one end of the surveying instrument (2) through a hinge block; The rotating drum (36) passes through the top of the storage box (31) via a bearing, the rotating shaft (37) is slidably connected to the inner wall of the rotating drum (36), and the top of the rotating shaft (37) is fixedly connected to a first knob, the sliding groove (38) is opened on the outer wall of the rotating drum (36), the pressure rod (39) is fixedly connected to the outer wall of the rotating shaft (37), and the pressure rod (39) passes through the sliding groove (38) and is slidably connected to the inner wall of the sliding groove (38), the rotating gear (310) is fixedly connected to the bottom of the first threaded rod (33), and the rotating gear (310) is transmission-connected to the rotating drum (36) via a gear set.

2. A topographic surveying and mapping device for construction according to claim 1, characterized in that: The inner wall of the storage box (31) is provided with a limiting groove (311), the inner wall of the storage box (31) is provided with an annular groove (312), and the annular groove (312) is connected to the top of the limiting groove (311), the outer wall of the rotating disk (35) is fixedly connected to the limiting block (313), and the limiting block (313) is slidably connected to the inner wall of the limiting groove (311).

3. A topographic surveying and mapping device for construction according to claim 2, characterized in that: A first telescopic rod (314) is fixedly mounted on the top of the inner wall of the box body (1); a movable end of the first telescopic rod (314) is fixedly connected to a limiting plate (315) at its bottom, and the limiting plate (315) is sleeved on the outside of the rotating drum (36); a spring (316) is sleeved on the outside of the first telescopic rod (314); two ends of the spring (316) are respectively fixedly connected to the top of the inner wall of the box body (1) and the top of the limiting plate (315); a clamping block (317) is fixedly connected to the bottom of the limiting plate (315), and the clamping block (317) is clamped to a gear at the bottom of the rotating drum (36).

4. A topographic surveying and mapping device for construction according to claim 3, characterized in that: The top of the rotating disk (35) is fixedly connected to a fixed block, the fixed block is rotatably connected to a second threaded rod (318) via a bearing, the second threaded rod (318) is threadedly connected to a moving block (319), and the moving block (319) is slidably connected to the top of the rotating disk (35), the top of the moving block (319) is hinged to a connecting rod (320), and the other end of the connecting rod (320) is hinged to the bottom of the surveying instrument (2), and one end of the second threaded rod (318) is provided with a second knob.

5. A topographic surveying and mapping device for construction according to claim 4, characterized in that: A frame (4) is arranged outside the box (1), and a drainage port is provided at the bottom of the inner wall of the frame (4). An angle adjustment mechanism (5) is arranged on the box (1), and the angle adjustment mechanism (5) comprises a second telescopic rod (51), a universal joint (52), and an electric push rod (53). The second telescopic rod (51) is arranged at the bottom of the box (1), and the second telescopic rod (51) is connected to the bottom of the inner wall of the frame (4) through the universal joint (52). The electric push rod (53) is fixedly mounted on the bottom of the inner wall of the frame (4), and the top of the movable end of the electric push rod (53) contacts the bottom of the box (1).

6. A topographic surveying and mapping device for construction according to claim 5, characterized in that: A Hall sensor (54) is provided at the bottom of the inner wall of the box body (1), and a magnet block (55) is provided at the top of the rotating gear (310), wherein the magnet block (55) is located directly above the Hall sensor (54).

7. A topographic surveying and mapping device for construction according to claim 6, characterized in that: The number of the Hall sensors (54) and the number of the electric push rods (53) are both eight, and the eight electric push rods (53) (53) are arranged around the outside of the universal joint (52).

8. A topographic surveying and mapping device for construction according to claim 7, characterized in that: A height adjustment mechanism (6) is provided at the bottom of the frame (4), and the height adjustment mechanism (6) comprises a third threaded rod (61), a threaded block (62), a hinged rod (63), a sliding sleeve (64), and a pointed cone (65). The third threaded rod (61) is rotatably connected to the bottom of the frame (4) via a bearing, and a third knob is provided at the bottom of the third threaded rod (61). The threaded block (62) is threadedly connected to the third threaded rod (61), one end of the hinged rod (63) is hinged to the threaded block (62), the sliding sleeve (64) is hinged to the other end of the hinged rod (63), and the pointed cone (65) is slidably connected to the inner wall of the sliding sleeve (64).

9. A building topographic surveying and mapping device according to claim 8, characterized in that: A lifting plate (66) is fixedly connected to the top of the threaded block (62), and the lifting plate (66) is sleeved on the outer wall of the third threaded rod (61). A third telescopic rod (67) is fixedly installed on the bottom of the lifting plate (66), and the movable end of the third telescopic rod (67) passes through the bottom of the lifting plate (66) and is fixedly connected to the bottom of the frame (4).

10. A building topographic surveying and mapping device according to claim 9, characterized in that: The number of the hinged rods (63), the sliding sleeves (64), the pointed cones (65) and the third telescopic rods (67) are all three; the three hinged rods (63) are arranged around the outer wall of the threaded block (62); the three third telescopic rods (67) are arranged around the lifting plate (66); and the three hinged rods (63) and the three third telescopic rods (67) are arranged in an alternating manner.

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