A field surveying device adjustable for real estate surveying

Abstract

The present invention relates to the field of sampling equipment for house construction, and discloses an adjustable on-site surveying and mapping device for real estate surveying and mapping, including a base, both sides of the top of the base are fixedly mounted with a light rod, the middle of the inner end of the lower mounting seat is respectively fixedly connected to the two ends of the fixed plate, the front side of the bottom end of the fixed plate is movably mounted with a sampling tube, the rear side of the top of the base is also fixedly welded with a support column, the top of the support column is movably arranged on the front outer diameter of the pressure rod, the front end of the pressure rod is fixedly mounted with a U-shaped connecting seat, both sides of the bottom end of the U-shaped connecting seat are movably mounted with connecting rods, and the ends of the connecting rods are movably mounted with clamping seats. The present invention utilizes a reduction motor in conjunction with structures such as an upper mounting seat and a lower mounting seat to achieve high-speed rotation and rapid reciprocating vibration of the sampling tube during the descent process, and can easily complete the sampling work when facing hard soil, so as to better meet the later soil sampling and mapping work.

Description

Technical Field

[0001] The invention relates to the field of sampling equipment for house construction, in particular to an adjustable on-site surveying and mapping device for real estate surveying and mapping. Background Art

[0002] During the construction of a house, sampling and analyzing the foundation soil is key. Through soil sampling, we can understand the type of soil, bearing capacity, compressibility, moisture content and other properties. This information helps determine the type of foundation and design requirements required for the building. For example, clay and sand have different bearing capacities and may require different foundation treatment methods.

[0003] Most of the existing soil sampling equipment uses a motor to drive the sampling barrel to rotate, and then rotates the handwheel to drive the sampling barrel down and deep into the ground to complete the soil sampling work. This sampling equipment has some defects. First, when facing harder soil, the sampling barrel cannot penetrate it, resulting in sampling failure. Secondly, after the sampling is completed, the soil will give the outer wall of the sampling barrel a great friction force. At this time, it is almost impossible to drive the sampling barrel to rise by reversing the handwheel. Usually, the sampling barrel can only be pulled out by the cooperation of multiple people, which is extremely time-consuming and labor-intensive. These problems need to be solved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an adjustable on-site surveying device for real estate surveying, which solves the problem that when the sampling tube of the existing sampling equipment is faced with hard soil, it is unable to penetrate the soil, resulting in sampling failure, and after the sampling is completed, the sampling tube can usually only be pulled out with the cooperation of multiple people, which is extremely time-consuming and labor-intensive.

[0005] To achieve the above objectives, the present invention is implemented through the following technical scheme: an adjustable on-site surveying and mapping device for real estate surveying and mapping, comprising a base, both sides of the top end of the base are fixedly installed with a light rod, the top ends of the light rod are respectively fixedly connected to the two sides of the bottom end of the top seat, a movable seat is movably arranged directly below the top seat, upper mounting seats are fixedly installed on both sides of the bottom end of the movable seat, and a lower mounting seat is movably arranged directly below the upper mounting seat, the middle of the inner end of the lower mounting seat is respectively fixedly connected to the two ends of a fixed plate, a sampling cylinder is movably installed on the front side of the bottom end of the fixed plate, a support column is also fixedly welded on the rear side of the top end of the base, the top of the support column is movably arranged on the front outer diameter of a pressure rod, a U-shaped connecting seat is fixedly installed on the front end of the pressure rod, connecting rods are movably installed on both sides of the bottom end of the U-shaped connecting seat, and clamping seats are movably installed at the ends of the connecting rods.

[0006] Preferably, both ends of the movable seat are fixedly connected with movable arms, and the interior of the movable arms is movably arranged on the outer diameter of the polished rod on the corresponding side.

[0007] Preferably, the lower sides of the inner ends of the lower mounting seat are movably arranged on both sides of the rotating shaft, a worm is fixedly mounted on the middle outer diameter of the rotating shaft, a worm wheel is fixedly mounted on the upper outer diameter of the sampling tube, and the worm wheel and the inner ends of the worm are meshingly connected.

[0008] Preferably, the inner ends of the upper mounting seat are movably arranged on both sides of the movable shaft, one end of the movable shaft passes through the interior of the upper mounting seat on one side and is fixedly installed with the first active bevel gear, a transmission shaft is movably installed on the ear plate of the upper mounting seat on one side, a first driven bevel gear is fixedly installed on the upper outer diameter of the transmission shaft, and the first driven bevel gear and the inner ends of the first active bevel gear are meshed and connected.

[0009] Preferably, a movable sleeve is movably mounted on the ear plate at the outer end of the lower mounting seat on one side, and a second active bevel gear is fixedly mounted on the bottom end of the movable sleeve, one end of the rotating shaft passes through the inner wall of the lower mounting seat on one side and is fixedly mounted with a second driven bevel gear, and the inner ends of the second driven bevel gear and the second active bevel gear are meshed and connected, splines are fixedly connected on both sides of the bottom end of the transmission shaft, key slots are opened on both sides of the interior of the movable sleeve, and the outer walls of the splines are movably arranged inside the key slots on the corresponding sides.

[0010] Preferably, the bottom end of the upper mounting seat is fixedly connected with a guide rod, the top of the lower mounting seat is provided with a guide groove, the end of the guide rod is movably arranged inside the guide groove on the corresponding side, a cam is fixedly connected on the middle outer diameter of the movable shaft, an interference wheel is movably installed in the middle of the top end of the fixed plate, and both sides of the top end of the fixed plate are connected to the inner side of the bottom end of the upper mounting seat through a reset spring.

[0011] Preferably, a reduction motor is fixedly mounted on one side of the top end of the movable seat, a driving wheel is fixedly mounted on the driving end of the reduction motor, a driven wheel is fixedly mounted on the other end of the movable shaft, and the outer diameters of the driving wheel and the driven wheel are connected by a transmission belt.

[0012] Preferably, a threaded rod is movably provided on the rear side of the bottom end of the top seat and the bottom end of the threaded rod is movably provided on the top end of the base, the middle outer diameter of the threaded rod is threadedly connected to the inner rear side of the movable seat, and the top end of the threaded rod extends to the top of the top seat and is fixedly connected to a handwheel.

[0013] Preferably, an upper arc groove is provided on the upper side of the inner end of the clamping seat, a lower arc groove is provided on the lower side of the inner end of the clamping seat, the front and rear sides of the clamping seat are movably connected to the connecting piece, and the rear end of the pressure rod is fixedly connected to a handle.

[0014] Working principle: First, move the device to the location of the real estate to be sampled and mapped, fix the device, and the staff rotates the hand wheel by hand to drive the threaded rod to rotate. The outer diameter of the rotating threaded rod meshes with the movable seat, and the movable seat is driven to move downward through the limit of the movable arm and the light rod, thereby driving the sampling tube under the movable seat to extend into the soil. Then start the reduction motor, the reduction motor drives the driving wheel to rotate, and the transmission belt is used to drive the driven wheel and the movable shaft to rotate. The rotating movable shaft drives the first active bevel gear to rotate, and the meshing transmission of the first active bevel gear and the first driven bevel gear is used. , drives the transmission shaft to rotate, and the rotating transmission shaft drives the movable sleeve and the second active bevel gear to rotate through the cooperation of the spline and the keyway, and utilizes the meshing transmission of the second active bevel gear and the second driven bevel gear to drive the rotating shaft to rotate, and the rotating shaft drives the worm to rotate, and the rotating worm and the worm wheel are meshed and driven, thereby driving the sampling tube to rotate, and the rotating and descending sampling tube is extended into the soil to complete the soil sampling work, and at the same time, the movable shaft will also drive the cam to rotate when it rotates, and when the cam rotates, it will intermittently contact the resistance wheel and push it downward, thereby driving the fixed plate and the sampling tube to descend, When the cam continues to rotate, the cam will release the pushing effect on the resistance wheel, and the reset spring will drive the fixed plate and the sampling tube to rise. This cycle can realize the rapid up and down vibration of the sampling tube, thereby giving the sampling tube a downward force, which is convenient for sampling some harder soils. When the sampling is completed, the staff will stop the reduction motor, then grab the handle and press it down hard. The handle will drive the tail end of the pressure rod to descend. With the support of the support column, the head of the pressure rod will rise, driving the U-shaped connecting seat to rise. When the U-shaped connecting seat rises, it drives the connecting rods on both sides to rise, and the rising connecting rods drive the two clamps The tail of the seat rises, and the head of the clamping seat drops, so that the upper arc grooves of the two clamping seats clamp the sampling tube and drive the sampling tube to rise. When the handle is released, the U-shaped connecting seat drops due to gravity, and the tail of the clamping seat is driven to drop by the action of the connecting rod, while the head rises. When the head of the clamping seat rises, the upper arc groove releases the clamping action on the sampling tube, and the diameter of the lower arc groove is larger than the diameter of the sampling tube, so the clamping seat will not come into contact with the sampling tube. The clamping seat will drop normally as the connecting rod drops, and as the pressure rod keeps moving up and down, the sampling tube can be taken out of the soil.

[0015] The present invention provides an adjustable on-site surveying and mapping device for real estate surveying and mapping. It has the following beneficial effects:

[0016] 1. The present invention drives the sampling tube to descend to the soil to complete the sampling work by rotating the hand wheel in coordination with the action of the threaded rod, the movable arm and the light rod. At the same time, the reduction motor is used in coordination with the upper mounting seat and the lower mounting seat and other structures to realize the high-speed rotation and rapid reciprocating vibration of the sampling tube during the descent process. The sampling work can be easily completed even when facing hard soil, which better meets the later soil sampling and mapping work;

[0017] 2. The present invention drives the end of the pressure rod to descend by pressing the handle downward, and utilizes the lever principle, in conjunction with structures such as a U-shaped connecting seat, a connecting rod, and a clamping seat, so that the sampling tube deep underground can be easily pulled out from the soil, which is convenient for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the movable seat in the present invention;

[0020] Figure 3 It is a bottom view structural schematic diagram of the movable seat in the present invention;

[0021] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0023] Figure 6 It is a structural schematic diagram of the U-shaped connecting seat in the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the clamping seat in the present invention;

[0025] Figure 8 It is a side perspective schematic diagram of the present invention.

[0026] Among them, 1, base; 2, bare rod; 3, top seat; 4, movable seat; 5, movable arm; 6, upper mounting seat; 7, movable shaft; 8, lower mounting seat; 9, rotating shaft; 10, worm; 11, sampling tube; 12, worm wheel; 13, first active bevel gear; 14, transmission shaft; 15, first driven bevel gear; 16, movable sleeve; 17, spline; 18, keyway; 19, second active bevel gear; 20, second driven bevel gear; 21. Guide rod; 22. Guide groove; 23. Fixed plate; 24. Cam; 25. Contact wheel; 26. Return spring; 27. Reducer motor; 28. Driving wheel; 29. ​​Driven wheel; 30. Transmission belt; 31. Threaded rod; 32. Handwheel; 33. Support column; 34. Pressure rod; 35. U-shaped connecting seat; 36. Connecting rod; 37. Clamping seat; 38. Upper arc groove; 39. Lower arc groove; 40. Connecting piece; 41. Handle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings of the specification 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.

[0028] Example: Please see the attached Figure 1 -Attached Figure 8 , an embodiment of the present invention provides an adjustable on-site surveying and mapping device for real estate surveying and mapping, such as Figure 1 As shown, it includes a base 1, and both sides of the top of the base 1 are fixedly installed with a light rod 2 to facilitate the lifting of the movable seat 4. The top of the light rod 2 is respectively fixedly connected to the two sides of the bottom end of the top seat 3, and the connection and fixing function is performed. A movable seat 4 is movably arranged directly below the top seat 3, and the movable seat 4 can move up and down in the direction of extending the light rod 2. Upper mounting seats 6 are fixedly installed on both sides of the bottom end of the movable seat 4, and the connection and fixing function is performed. A lower mounting seat 8 is movably arranged directly below the upper mounting seat 6, and the lower mounting seat 8 can move upward, and the middle part of the inner side end of the lower mounting seat 8 is respectively fixedly connected to the two ends of the fixed plate 23, and the connection and fixing function is performed. A sampling tube 1 is movably installed on the front side of the bottom end of the fixed plate 23 1, the main structure for sampling, the top rear side of the base 1 is also fixedly welded with a support column 33, which has a supporting and fixing function, the top of the support column 33 is movably set on the front outer diameter of the pressure rod 34, and the support position is forward. By using the lever principle, the subsequent tube taking work can be easier, and the front end of the pressure rod 34 is fixedly installed with a U-shaped connecting seat 35, which is U-shaped and the center bypasses the threaded rod 31. Both sides of the bottom end of the U-shaped connecting seat 35 are movably installed with connecting rods 36, and the ends of the connecting rods 36 are movably installed with clamping seats 37, which are the main structure for clamping the sampling tube 11. Under normal conditions, it does not contact the sampling tube 11 and will not affect the normal sampling work of the sampling tube 11.

[0029] In this embodiment, both ends of the movable seat 4 are fixedly connected with movable arms 5, and the interior of the movable arms 5 is movably arranged on the outer diameter of the corresponding side light rod 2 to improve the stability of the movable seat 4 when moving up and down.

[0030] Furthermore, the lower sides of the inner ends of the lower mounting seat 8 are movably arranged on both sides of the rotating shaft 9, and a worm 10 is fixedly mounted on the middle outer diameter of the rotating shaft 9. When the rotating shaft 9 rotates, the worm 10 will be driven to rotate. A worm wheel 12 is fixedly mounted on the upper outer diameter of the sampling tube 11, and the worm wheel 12 and the inner ends of the worm 10 are meshed and connected. The rotating worm 10 meshes with the worm wheel 12 for transmission, driving the worm wheel 12 and the sampling tube 11 to rotate, thereby facilitating subsequent sampling work.

[0031] Furthermore, the inner ends of the upper mounting seat 6 are movably arranged on both sides of the movable shaft 7, one end of the movable shaft 7 passes through the interior of the upper mounting seat 6 on one side and is fixedly installed with a first active bevel gear 13. When the movable shaft 7 rotates, it will drive the first active bevel gear 13 to rotate. A transmission shaft 14 is movably installed on the ear plate of the upper mounting seat 6 on one side, and a first driven bevel gear 15 is fixedly installed on the upper outer diameter of the transmission shaft 14, and the first driven bevel gear 15 is meshed and connected with the inner end of the first active bevel gear 13. The transmission shaft 14 is driven to rotate through the meshing transmission of the first active bevel gear 13 and the first driven bevel gear 15.

[0032] Furthermore, a movable sleeve 16 is movably mounted on the outer end ear plate of the lower mounting seat 8 on one side, and the outer diameter of the movable sleeve 16 is mounted on the outer end ear plate of the lower mounting seat 8 through a bearing seat. A second active bevel gear 19 is fixedly mounted on the bottom end of the movable sleeve 16. When the movable sleeve 16 rotates, it will drive the second active bevel gear 19 to rotate. One end of the rotating shaft 9 passes through the inner wall of the lower mounting seat 8 on one side and is fixedly mounted with a second driven bevel gear 20. The second driven bevel gear 20 is meshed and connected with the inner side end of the second active bevel gear 19. When the wheel 19 rotates, it drives the rotating shaft 9 to rotate, thereby driving the worm wheel 12, the worm 10 and the sampling tube 11 to rotate. Splines 17 are fixedly connected to both sides of the bottom end of the transmission shaft 14. Key grooves 18 are provided on both sides of the inside of the movable sleeve 16 and the outer walls of the splines 17 are movably arranged inside the corresponding side key grooves 18. The rotating transmission shaft 14 drives the movable sleeve 16 and the second active bevel gear 19 to rotate through the cooperation of the splines 17 and the key grooves 18. The purpose of setting the splines 17 and the key grooves 18 is not to affect the up and down functions of the lower mounting seat 8.

[0033] The lower end of the upper mounting seat 6 is fixedly connected with a guide rod 21, and the top of the lower mounting seat 8 is provided with a guide groove 22. The ends of the guide rods 21 are movably arranged inside the corresponding side guide grooves 22 to improve the stability of the lower mounting seat 8 when it moves up and down. A cam 24 is fixedly connected to the middle outer diameter of the movable shaft 7, and a friction wheel 25 is movably installed in the middle of the top of the fixed plate 23. Both sides of the top of the fixed plate 23 are connected to the inner side of the bottom end of the upper mounting seat 6 through a return spring 26. When the movable shaft 7 rotates, it will also drive the cam 24 to rotate. When the cam 24 rotates, it will contact the friction wheel 25 and push it downward, thereby driving the fixed plate 23 and the sampling tube 11 to descend. When the cam 24 continues to rotate, the cam 24 will release the pushing effect on the friction wheel 25, and the return spring 26 will drive the fixed plate 23 and the sampling tube 11 to rise. The cycle is repeated, and the sampling tube 11 can be quickly vibrated up and down, thereby giving the sampling tube 11 a downward force, which is convenient for sampling some harder soils.

[0034] Furthermore, a reduction motor 27 is fixedly installed on one side of the top of the movable seat 4, a driving wheel 28 is fixedly installed on the driving end of the reduction motor 27, and a driven wheel 29 is fixedly installed on the other end of the movable shaft 7. The outer diameters of the driving wheel 28 and the driven wheel 29 are connected by a transmission belt 30. The reduction motor 27 drives the driving wheel 28 to rotate, and the transmission of the transmission belt 30 drives the driven wheel 29 and the movable shaft 7 to rotate.

[0035] Furthermore, a threaded rod 31 is movably provided on the rear side of the bottom end of the top seat 3 and the bottom end of the threaded rod 31 is movably provided on the top end of the base 1, the middle outer diameter of the threaded rod 31 is threadedly connected to the inner rear side of the movable seat 4, the top end of the threaded rod 31 extends to the top of the top seat 3 and is fixedly connected to a handwheel 32, and the staff drives the threaded rod 31 to rotate by rotating the handwheel 32 by hand, the outer diameter of the rotating threaded rod 31 engages with the movable seat 4, and through the limiting of the movable arm 5 and the light rod 2, the movable seat 4 is driven to move downward, thereby driving the sampling tube 11 below the movable seat 4 to extend into the soil.

[0036] Specifically, first move the device to the location of the real estate land to be sampled and surveyed, fix the device, and the staff rotates the hand wheel 32 by hand to drive the threaded rod 31 to rotate. The outer diameter of the rotating threaded rod 31 meshes with the movable seat 4, and the movable arm 5 and the light rod 2 are limited to drive the movable seat 4 to move downward, thereby driving the sampling tube 11 under the movable seat 4 to extend into the soil. Then start the reduction motor 27, and the reduction motor 27 drives the driving wheel 28 to rotate. The transmission belt 30 is used to drive the driven wheel 29 and the movable shaft 7 to rotate. The rotating movable shaft 7 drives the first active bevel gear 13 to rotate, and the meshing transmission of the first active bevel gear 13 and the first driven bevel gear 15 drives the transmission shaft 14 to rotate. The rotating transmission shaft 14 drives the movable sleeve 16 and the second active bevel gear 19 through the cooperation of the spline 17 and the keyway 18. The rotating shaft 9 is driven to rotate by the meshing transmission of the second active bevel gear 19 and the second driven bevel gear 20, and the rotating shaft 9 drives the worm 10 to rotate. The rotating worm 10 meshes with the worm wheel 12 to drive the sampling tube 11 to rotate, and the rotating and descending sampling tube 11 is extended into the soil to complete the soil sampling work. At the same time, the movable shaft 7 will also drive the cam 24 to rotate when rotating. When the cam 24 rotates, it will contact the resistance wheel 25 and push it downward, thereby driving the fixed plate 23 and the sampling tube 11 to descend. When the cam 24 continues to rotate, the cam 24 will release the pushing effect on the resistance wheel 25, and the reset spring 26 drives the fixed plate 23 and the sampling tube 11 to rise, and the cycle is repeated, so that the sampling tube 11 can be quickly vibrated up and down, thereby giving the sampling tube 11 a downward force, which is convenient for sampling some harder soils.

[0037] Furthermore, an upper arc groove 38 is provided on the upper side of the inner end of the clamping seat 37, and a lower arc groove 39 is provided on the lower side of the inner end of the clamping seat 37. The diameter of the upper arc groove 38 is slightly larger than the diameter of the sampling tube 11, and can complete the clamping work of the sampling tube 11. The diameter of the lower arc groove 39 is much larger than the sampling tube 11, and cannot complete the clamping work of the sampling tube 11. The front and rear sides of the clamping seat 37 are movably connected to the connecting piece 40 for connection, and the rear end of the pressure rod 34 is fixedly connected to the handle 41.

[0038] Specifically, when sampling is completed, the staff stops the reduction motor 27, then grabs the handle 41 and presses it down hard, the handle 41 will drive the tail end of the pressure rod 34 to descend, and the head of the pressure rod 34 will rise by utilizing the supporting effect of the support column 33, driving the U-shaped connecting seat 35 to rise. When the U-shaped connecting seat 35 rises, it drives the connecting rods 36 on both sides to rise, and the rising connecting rods 36 drive the tails of the two clamping seats 37 to rise, and the heads of the clamping seats 37 to descend, so that the upper arc grooves 38 of the two clamping seats 37 clamp the sampling tube 11 and drive the sampling tube 11 upward. When the handle 41 is released, the U-shaped connecting seat 35 descends due to gravity, and the tail of the clamping seat 37 is driven by the action of the connecting rod 36 to descend, and the head rises. When the head of the clamping seat 37 rises, the upper arc groove 38 releases the clamping action on the sampling tube 11, and the diameter of the lower arc groove 39 is larger than the diameter of the sampling tube 11, so the clamping seat 37 will not come into contact with the sampling tube 11, and the clamping seat 37 will descend normally with the descent of the connecting rod 36. With the continuous up and down movement of the pressure rod 34, the sampling tube 11 is taken out of the soil.

[0039] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable on-site surveying device for real estate surveying, comprising a base (1), characterized in that: A light rod (2) is fixedly mounted on both sides of the top end of the base (1); the top ends of the light rod (2) are respectively fixedly connected to both sides of the bottom end of the top seat (3); a movable seat (4) is movably arranged directly below the top seat (3); upper mounting seats (6) are fixedly mounted on both sides of the bottom end of the movable seat (4); a lower mounting seat (8) is movably arranged directly below the upper mounting seat (6); the middle parts of the inner ends of the lower mounting seats (8) are respectively fixedly connected to both ends of the fixed plate (23); A sampling cylinder (11) is movably mounted on the front side of the bottom end of the fixing plate (23); a support column (33) is fixedly welded to the rear side of the top end of the base (1); the top of the support column (33) is movably arranged on the front outer diameter of the pressure rod (34); a U-shaped connecting seat (35) is fixedly mounted on the front end of the pressure rod (34); connecting rods (36) are movably mounted on both sides of the bottom end of the U-shaped connecting seat (35); and a clamping seat (37) is movably mounted on the ends of the connecting rods (36); The lower sides of the inner ends of the lower mounting seat (8) are movably arranged on both sides of the rotating shaft (9), a worm (10) is fixedly mounted on the middle outer diameter of the rotating shaft (9), a worm wheel (12) is fixedly mounted on the upper outer diameter of the sampling tube (11), and the worm wheel (12) and the inner ends of the worm (10) are meshingly connected; The inner ends of the upper mounting seat (6) are movably arranged on both sides of the movable shaft (7), one end of the movable shaft (7) passes through the interior of the upper mounting seat (6) on one side and is fixedly mounted with a first active bevel gear (13), a transmission shaft (14) is movably mounted on the ear plate of the upper mounting seat (6) on one side, a first driven bevel gear (15) is fixedly mounted on the upper outer diameter of the transmission shaft (14), and the first driven bevel gear (15) and the inner ends of the first active bevel gear (13) are meshed and connected; The bottom end of the upper mounting seat (6) is fixedly connected to a guide rod (21), the top of the lower mounting seat (8) is provided with a guide groove (22), the end of the guide rod (21) is movably arranged inside the guide groove (22) on the corresponding side, a cam (24) is fixedly connected to the middle outer diameter of the movable shaft (7), a resisting wheel (25) is movably installed in the middle of the top end of the fixed plate (23), and both sides of the top end of the fixed plate (23) are connected to the inner side of the bottom end of the upper mounting seat (6) through a return spring (26); A movable sleeve (16) is movably mounted on the outer end ear plate of the lower mounting seat (8) on one side, and a second active bevel gear (19) is fixedly mounted on the bottom end of the movable sleeve (16); one end of the rotating shaft (9) passes through the inner wall of the lower mounting seat (8) on one side and is fixedly mounted with a second driven bevel gear (20), and the second driven bevel gear (20) is meshedly connected with the inner side ends of the second active bevel gear (19); both sides of the bottom end of the transmission shaft (14) are fixedly connected with splines (17); both sides of the inside of the movable sleeve (16) are provided with keyways (18), and the outer walls of the splines (17) are movably arranged inside the keyways (18) on the corresponding sides; A reduction motor (27) is fixedly mounted on one side of the top end of the movable seat (4), a driving wheel (28) is fixedly mounted on the driving end of the reduction motor (27), a driven wheel (29) is fixedly mounted on the other end of the movable shaft (7), and the outer diameters of the driving wheel (28) and the driven wheel (29) are connected via a transmission belt (30).

2. The adjustable on-site surveying device for real estate surveying according to claim 1, characterized in that: Both ends of the movable seat (4) are fixedly connected to movable arms (5), and the interior of the movable arms (5) is movably arranged on the outer diameter of the polished rod (2) on the corresponding side.

3. The adjustable on-site surveying device for real estate surveying according to claim 1, characterized in that: A threaded rod (31) is movably arranged at the rear side of the bottom end of the top seat (3), and the bottom end of the threaded rod (31) is movably arranged at the top end of the base (1); the middle outer diameter of the threaded rod (31) is threadedly connected to the inner rear side of the movable seat (4); the top end of the threaded rod (31) extends to the top of the top seat (3) and is fixedly connected to a hand wheel (32).

4. The adjustable on-site surveying device for real estate surveying according to claim 1, characterized in that: An upper arc groove (38) is provided on the upper side of the inner end of the clamping seat (37), a lower arc groove (39) is provided on the lower side of the inner end of the clamping seat (37), front and rear sides of the clamping seat (37) are movably connected to connecting pieces (40), and a handle (41) is fixedly connected to the rear end of the pressure rod (34).

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