Surveying instrument positioning device for engineering surveying and mapping

Abstract

The invention relates to the field of engineering surveying and mapping equipment, and discloses an engineering surveying and mapping instrument positioning device which comprises a lower mounting seat, three electric cylinders are movably mounted on the outer side of the top end of the lower mounting seat, a placement table is fixedly connected to the top end of an upper mounting seat, and a transmission shaft is movably mounted in the middle of the interior of the placement table; a driving bevel gear is fixedly installed on the outer diameter of the middle of the transmission shaft, lead screws are movably installed on the four inner side walls of the placing table, sliding blocks are in threaded connection with the outer diameters of the lead screws, and sliding grooves are formed in the positions, corresponding to the lead screws, of the upper surface of the placing table; the top ends of the sliding blocks penetrate through the interiors of the sliding grooves in the corresponding sides and are fixedly connected with clamping blocks. Through the unique structural design, convenient opening and closing and height adjustment of the inclined supporting frame are achieved to adapt to the terrain, the device can automatically adapt to clamping of the irregular surveying instrument and is stable and reliable, accurate calibration can be achieved to ensure that the surveying instrument is horizontal, and the efficiency and precision of engineering surveying and mapping are effectively improved.

Description

Technical Field

[0001] The invention relates to the field of engineering surveying and mapping equipment, in particular to a surveying and mapping instrument positioning device for engineering surveying and mapping. Background Art

[0002] In the field of engineering surveying and mapping, accurate positioning of surveying instruments is crucial. Traditional surveying and mapping instrument positioning devices often have many shortcomings and cannot meet the high requirements of modern engineering surveying and mapping.

[0003] On the one hand, traditional positioning devices are not good at adapting to terrain. In complex and ever-changing engineering surveying and mapping sites, different terrain conditions pose challenges to the stability of positioning devices. Traditional devices are difficult to quickly and effectively adapt to different terrains and cannot provide stable and reliable support for surveying and mapping instruments, which may lead to deviations in surveying and mapping results and affect the accuracy and safety of the project.

[0004] On the other hand, the clamping and fixing function of the surveying instrument is not perfect. When faced with surveying instruments of different shapes, traditional devices are difficult to achieve accurate and adaptive clamping, and are prone to loose clamping or failure to fully fit the surveying instrument. This may not only cause the surveying instrument to move during the surveying process, affecting the measurement accuracy, but also waste a lot of time and manpower due to frequent clamping adjustments.

[0005] In addition, traditional positioning devices lack effective calibration functions. In actual use, due to various factors, the positioning device may tilt, and traditional devices are difficult to accurately detect and adjust this tilt, making it impossible for the surveyor to be in a completely horizontal state, thereby reducing the quality of surveying.

[0006] To sum up, in order to solve the problems of traditional positioning devices for engineering surveying and mapping in terrain adaptation, clamping and fixation, and calibration functions, there is an urgent need for a new type of surveying and mapping positioning device for engineering surveying and mapping to improve the efficiency and accuracy of engineering surveying and mapping. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention provides a surveying instrument positioning device for engineering surveying, which solves the problems that traditional positioning devices are difficult to achieve accurate and adaptive clamping, are prone to loose clamping or cannot fully fit the surveying instrument, and lack effective calibration function.

[0008] To achieve the above purpose, the present invention is implemented through the following technical solutions: a surveying instrument positioning device for engineering surveying and mapping, including a lower mounting seat, three electric cylinders are movably mounted on the outer side of the top of the lower mounting seat, the driving ends of the electric cylinders are movably mounted on the bottom end of the upper mounting seat, the top of the upper mounting seat is fixedly connected to a placement table, a transmission shaft is movably mounted on the inner middle part of the placement table, an active bevel gear is fixedly mounted on the middle outer diameter of the transmission shaft, screw rods are movably mounted on the four inner side walls of the placement table, and the outer diameter of the screw rods is threadedly connected to the bottom end of the upper mounting seat. A slider is connected, and a slide groove is opened at a position corresponding to each screw rod on the upper surface of the placing table, and the top of the slider passes through the interior of the slide groove on the corresponding side and is fixedly connected to a clamping block, and three diagonal brackets are movably installed at the bottom of the lower mounting seat, and an outer rod is fixedly connected to the middle of the bottom end of the lower mounting seat, and an inner rod is movably installed at the bottom of the outer rod, and a hexagonal table is fixedly connected to the bottom end of the inner rod, and connecting rods are movably installed on the outer walls of the hexagonal table and the corresponding sides of each diagonal bracket, and the ends of the connecting rods are movably installed on the inner sides of the diagonal brackets on the corresponding sides.

[0009] Preferably, a semicircular groove is provided in the middle of the lower mounting seat, a semicircular counterweight block is movably arranged inside the semicircular groove, a mark point is provided in the middle of the upper surface of the semicircular counterweight block, and a calibration camera is fixedly installed in the middle of the bottom end of the upper mounting seat.

[0010] Preferably, a worm wheel is fixedly mounted on the lower outer diameter of the transmission shaft, a worm is movably mounted on the inner side of the placement table and the inner ends of the worm and the worm wheel are meshed and connected, and one end of the worm extends to the outside of the placement table and is fixedly connected to a rocker.

[0011] Preferably, the inner ends of the screw rods are fixedly connected to short shafts, the outer diameters of the short shafts are fixedly connected to clamping springs, the inner ends of the clamping springs are provided with driven bevel gears and the bottom ends of the driven bevel gears are meshed and connected with the tops of the driving bevel gears, the inner ends of the driven bevel gears are fixedly connected to first clamping plates, a plurality of round head clamping grooves are provided on the outer diameters of the first clamping plates, the inner ends of the short shafts are fixedly connected to second clamping plates, a plurality of round head pins are fixedly connected to the outer diameters of the second clamping plates and the ends of the round head pins are arranged inside the round head clamping grooves on the corresponding sides.

[0012] Preferably, the interior of the diagonal support frame is movably provided with a diagonal support rod, the bottom end of the diagonal support rod passes through the bottom of the corresponding side diagonal support frame and is fixedly connected with a supporting foot, and a locking ring is fixedly installed on the lower outer diameter of the diagonal support frame.

[0013] Preferably, a pressure plate is movably installed on the inner bottom of the hexagonal table, the bottom end of the pressure plate is fixedly connected to a pressure twist and the end of the pressure twist extends to the outside of the hexagonal table, both sides of the top of the pressure plate are connected to the top wall of the hexagonal table through a return spring, and a pressure rod is fixedly connected to the middle of the top of the pressure plate.

[0014] Preferably, the inner top of the inner rod is fixedly connected to a fixed seat, a movable seat is movably installed inside the fixed seat, oblique grooves are provided on both sides of the movable seat, a positioning pin is fixedly connected to one end of the movable seat, and a plurality of positioning holes are provided on one side of the outer rod.

[0015] Preferably, the other end of the movable seat is connected to the inner wall of the fixed seat through a compression spring, the top of the pressure rod is fixedly connected to a support plate, both sides of the top of the support plate are fixedly connected to support rods, vertical grooves are opened on both sides of the fixed seat, the outer walls of the support rods are movably arranged inside the vertical grooves on the corresponding sides, and the ends of the support rods are movably arranged inside the inclined grooves on the corresponding sides.

[0016] Working principle: First, stand up the device and press the pressure plate at the bottom of the hexagonal table to open the three diagonal brackets outward. The specific operation is to press the pressure plate to drive the pressure rod to move, and the pressure rod drives the two support rods to move through the support plate. Since the end of the support rod is movably arranged in the diagonal bracket, when the support rod moves, the limiting effect of the inclined groove is utilized to make the movable seat move inside the fixed seat, thereby driving the positioning pin to follow the movement. At this time, the positioning pin retracts into the positioning hole, and the limiting effect of the outer rod on the inner rod is released. The inner rod can move up and down freely, and the hexagonal table is driven to move by adjusting the up and down movement of the inner rod. When the hexagonal table moves, it will drive one end of the connecting rod to follow and rotate, so that the other end of the connecting rod will open the three diagonal brackets. Control it well. After the diagonal support frame is stretched to an angle, the compression torque is released, and the reset spring will drive the pressure plate and the pressure rod to reset. When the pressure rod is reset, it will drive the support rod to reset, and then use the action of the compression spring to make the locating pin at one end of the movable seat extend again and get stuck in the new positioning hole, completing the limiting effect of the inner rod and the outer rod, and then operate the locking ring on each diagonal support frame to telescope and adjust the diagonal support rod, so as to control the height of the equipment. After the adjustment is completed, the surveying instrument used for engineering surveying is placed on the surface of the placement table, and then the rocker is shaken to drive the worm to rotate, and the rotating worm is meshed with the worm wheel, driving the worm wheel and the transmission shaft to rotate, thereby driving the active bevel gear to rotate, and the rotating active bevel gear is meshed with all the driven bevel gears, driving all the driven bevel gears and all When the screw rotates, the limiting effect of the slide groove on the surface of the placement table will drive all the sliders and clamping blocks to move inward at the same time to clamp and fix the surveying instrument. When the shape of the surveying instrument is irregular, two of the clamping blocks that are opposite to each other will first contact the surveying instrument, while the other two clamping blocks have not yet contacted the surveying instrument. At this time, the rocker continues to rotate, and the active bevel gear will continue to drive all the driven bevel gears to rotate, so that the two clamping blocks that have not contacted the surveying instrument continue to move inward until they contact the surveying instrument to complete the clamping action, and the screws of the two clamping blocks that had previously contacted the surveying instrument will stop rotating, and the driven bevel gears on their inner sides will compress the clamping springs when they rotate, so that there is no gap between the round head pin and the round head slot. The stop will cause disengagement and engagement, thereby preventing the lead screw from rotating with the rotation of the driven bevel gear. After completing the clamping and fixation of the surveying instrument, turn on the calibration camera. When the equipment has a tilt angle, since the semicircular counterweight block always moves in the semicircular groove, the semicircular counterweight block will not tilt with the tilt of the equipment, but will always remain in a horizontal state. The calibration camera is used to capture the mark point marks on the surface of the semicircular counterweight block to obtain the specific angle of inclination of the equipment, and then the coordinated extension and retraction of the three electric cylinders are used to realize the rotational freedom movement and compound movement of the X, Y, and Z axes of the upper mounting seat until the calibration camera can perfectly capture the mark point marks. At this time, the surface surveying instrument is in a bent horizontal state, thereby improving the quality of later surveying and mapping.

[0017] The present invention provides a surveying instrument positioning device for engineering surveying and mapping. It has the following beneficial effects:

[0018] 1. The three diagonal braces at the bottom of the present invention cooperate with the structural design of the inner rod and the outer rod to provide stable support for the surveying instrument. The diagonal braces can be easily opened and retracted by pressing the pressure plate. The operation is convenient and can adapt to different terrain environments. The diagonal brace rods in the diagonal braces can be telescopically adjusted through the locking ring, so as to accurately control the height of the equipment and meet the needs of different surveying and mapping scenarios.

[0019] 2. The present invention drives the worm and the worm wheel to rotate the transmission shaft through the rocker, thereby making the active bevel gear mesh with the driven bevel gear for transmission, driving the screw to rotate, driving the slider and the clamping block to move inward at the same time, so as to clamp and fix the surveying instrument. When the shape of the surveying instrument is irregular, the device can automatically adapt, and the screw corresponding to the clamping block that has contacted the surveying instrument will stop rotating, and the driven bevel gear will compress the clamping spring. The round head pin and the round head slot are released and engaged to prevent the screw from rotating with the driven bevel gear, thereby ensuring the stability and reliability of the clamping.

[0020] 3. The semicircular counterweight block in the middle of the lower mounting seat of the present invention always remains in a horizontal state, and the calibration camera in the middle of the bottom end of the upper mounting seat can capture the mark point marks on the surface of the semicircular counterweight block, so as to obtain the specific angle of inclination of the equipment, and then use the coordinated extension and retraction of the three electric cylinders to realize the rotational freedom movement and compound movement of the X, Y, and Z axes of the upper mounting seat, ensuring that the surveying instrument is in a completely horizontal state, thereby improving the quality of subsequent surveying and mapping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 It is a schematic diagram of the internal structure of the placing table in the present invention;

[0024] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0025] Figure 5 It is a schematic diagram of the internal structure of the outer rod in the present invention;

[0026] Figure 6 It is a schematic diagram of the internal structure of the hexagonal table in the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the fixing seat in the present invention;

[0028] Figure 8 It is a structural schematic diagram of the movable seat in the present invention;

[0029] Fig. 9 It is a bottom perspective view of the present invention.

[0030] Among them, 1. lower mounting seat; 2. electric cylinder; 3. upper mounting seat; 4. semicircular groove; 5. semicircular counterweight; 6. mark point mark; 7. calibration camera; 8. placement table; 9. transmission shaft; 10. worm gear; 11. worm; 12. rocker; 13. active bevel gear; 14. screw; 15. slider; 16. slide; 17. clamping block; 18. short shaft; 19. clamping spring; 20. driven bevel gear; 21. first clamping plate; 22. round head Slot; 23, second clamping plate; 24, round head pin; 25, diagonal support frame; 26, diagonal support rod; 27, supporting foot; 28, locking ring; 29, outer rod; 30, inner rod; 31, hexagonal table; 32, connecting rod; 33, pressure plate; 34, compression torsion; 35, return spring; 36, pressure rod; 37, fixed seat; 38, movable seat; 39, oblique groove; 40, positioning pin; 41, compression spring; 42, supporting plate; 43, support rod; 44, vertical groove; 45, positioning hole. DETAILED DESCRIPTION

[0031] 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.

[0032] Example:

[0033] Please see attached Figure 1 -Attached Fig. 9 The embodiment of the present invention provides a surveying instrument positioning device for engineering surveying and mapping, such as Figure 1 As shown, the lower mounting seat 1 includes a lower mounting seat 1, which serves as the basic supporting component of the entire device. Three electric cylinders 2 are movably installed on the outer side of the top end thereof. The driving ends of the three electric cylinders 2 are movably installed on the bottom end of the upper mounting seat 3. Through the telescopic movement of the electric cylinders 2, the upper mounting seat 3 can be adjusted in different directions, which provides an important adjustment means for the precise positioning of the subsequent surveying instrument. The top of the upper mounting seat 3 is fixedly connected with a placing table 8, which is used to carry the surveying instrument to ensure its stability during operation.

[0034] A transmission shaft 9 is movably installed in the inner middle part of the placement table 8. The transmission shaft 9 plays a key transmission role in the entire device. A driving bevel gear 13 is fixedly installed on the outer diameter of the middle part. Screw rods 14 are movably installed on the four inner side walls of the placement table 8. Slide blocks 15 are threadedly connected on the outer diameter of the screw rods 14. When the transmission shaft 9 drives the driving bevel gear 13 to rotate, the driving bevel gear 13 will mesh with the driven bevel gears 20 at the inner ends of the four screw rods 14 for transmission, thereby driving the screw rods 14 to rotate. When the screw rods 14 rotate, the limiting effect of the slide grooves 16 opened on the surface of the placement table 8 will drive the slide blocks 15 to slide in the slide grooves 16. The top ends of the slide blocks 15 pass through the interior of the corresponding side slide grooves 16 and are fixedly connected with clamping blocks 17. As the slide blocks 15 move, the clamping blocks 17 will move inward at the same time to clamp and fix the surveying instrument.

[0035] Three diagonal braces 25 are movably installed at the bottom of the lower mounting seat 1. These three diagonal braces 25 can provide stable support for the entire device, ensuring that the device can remain stable in different terrain environments. An outer rod 29 is fixedly connected to the middle of the bottom end of the lower mounting seat 1, and an inner rod 30 is movably installed at the bottom of the outer rod 29. The bottom end of the inner rod 30 is fixedly connected to a hexagonal platform 31. The hexagonal platform 31 and the outer wall of the corresponding side of each diagonal brace 25 are movably installed with connecting rods 32, and the ends of the connecting rods 32 are movably installed on the inner side of the corresponding side diagonal brace 25. The opening and contraction of the diagonal brace 25 can be achieved by operating the hexagonal platform 31.

[0036] In this embodiment, a semicircular groove 4 is opened in the middle of the lower mounting seat 1, and a semicircular counterweight 5 is movably arranged inside the semicircular groove 4. The semicircular counterweight 5 plays an important balancing role in the device. Since it is always movable in the semicircular groove 4, when the device has a tilt angle, the semicircular counterweight 5 will not tilt with the device, but will always remain in a horizontal state. A mark point mark 6 is provided in the middle of the upper surface of the semicircular counterweight 5, and a calibration camera 7 is fixedly installed in the middle of the bottom end of the upper mounting seat 3. The calibration camera 7 can capture the mark point mark 6 on the surface of the semicircular counterweight 5, so as to obtain the specific angle of tilt of the device.

[0037] Specifically, turn on the calibration camera 7. When the device has a tilt angle, since the semicircular counterweight 5 is always active in the semicircular groove 4, the semicircular counterweight 5 will not tilt with the tilt of the device, but will always remain in a horizontal state. The calibration camera 7 is used to capture the mark point mark 6 on the surface of the semicircular counterweight 5 to obtain the specific angle of the device tilt. Subsequently, the coordinated extension and retraction of the three electric cylinders 2 are used to realize the rotational freedom movement and compound movement of the X, Y, and Z axes of the upper mounting seat 3, until the calibration camera 7 can perfectly capture the mark point mark 6. At this time, the surface surveying and mapping instrument is in a bent horizontal state, thereby improving the quality of later surveying and mapping.

[0038] Furthermore, a worm wheel 10 is fixedly mounted on the lower outer diameter of the transmission shaft 9, a worm 11 is movably mounted on the inner side of the placement table 8, and the inner ends of the worm 11 and the worm wheel 10 are meshingly connected, one end of the worm 11 extends to the outside of the placement table 8 and is fixedly connected to a rocker 12, and by shaking the rocker 12, the worm 11 can be driven to rotate, and the rotating worm 11 is meshed with the worm wheel 10, thereby driving the worm wheel 10 and the transmission shaft 9 to rotate.

[0039] Furthermore, the inner ends of the screw rods 14 are fixedly connected with short shafts 18, and the outer diameters of the short shafts 18 are fixedly connected with clamping springs 19, which play an important role in buffering and limiting in the device. The inner ends of the clamping springs 19 are provided with driven bevel gears 20, and the bottom ends of the driven bevel gears 20 are meshed and connected with the tops of the active bevel gears 13, and the inner ends of the driven bevel gears 20 are fixedly connected with first clamping plates 21, and the outer diameters of the first clamping plates 21 are provided with a plurality of round head clamping grooves 22, and the inner ends of the short shafts 18 are fixedly connected with second clamping plates. The outer diameter of the plate 23 and the second clamping plate 23 are fixedly connected with a plurality of round head pins 24, and the ends of the round head pins 24 are arranged inside the corresponding side round head slots 22. When the shape of the surveying instrument is irregular, the screw rod 14 corresponding to the clamping block 17 that has contacted the surveying instrument will stop rotating. At this time, the driven bevel gear 20 will compress the clamping spring 19 while continuing to rotate, so that the round head pin 24 and the round head slot 22 are constantly disengaged and engaged, thereby preventing the screw rod 14 from rotating with the rotation of the driven bevel gear 20, ensuring the stability and reliability of the clamping.

[0040] Specifically, a surveying instrument for engineering surveying is placed on the surface of the placement table 8, and then the rocker 12 is shaken to drive the worm 11 to rotate. The rotating worm 11 is meshed with the worm wheel 10 to drive the worm wheel 10 and the transmission shaft 9 to rotate, thereby driving the active bevel gear 13 to rotate. The rotating active bevel gear 13 is meshed with all the driven bevel gears 20 to drive all the driven bevel gears 20 and all the screw rods 14 to rotate. When the screw rod 14 rotates, the limiting effect of the slide groove 16 on the surface of the placement table 8 will drive all the sliders 15 and the clamping blocks 17 to move inward at the same time, so as to clamp and fix the surveying instrument. When the shape of the surveying instrument is irregular, there will be a relative The two clamping blocks 17 will first contact the surveying instrument, while the other two clamping blocks 17 have not yet contacted the surveying instrument. At this time, the rocker 12 continues to be rotated, and the active bevel gear 13 will continue to drive all the driven bevel gears 20 to rotate, so that the two clamping blocks 17 that have not contacted the surveying instrument continue to move inward until they contact the surveying instrument to complete the clamping action, and the screw rods 14 of the two clamping blocks 17 that have previously contacted the surveying instrument will stop rotating, and the driven bevel gears 20 on their inner sides will compress the clamping springs 19 when rotating, causing the round head pin 24 and the round head slot 22 to continuously disengage and engage, thereby preventing the screw rod 14 from rotating with the rotation of the driven bevel gear 20.

[0041] Furthermore, diagonal support rods 26 are movably installed inside the diagonal support frames 25. The bottom ends of the diagonal support rods 26 pass through the bottom of the corresponding side diagonal support frames 25 and are fixedly connected to support feet 27. The combination of the diagonal support rods 26 and the support feet 27 can further enhance the stability of the device. Locking rings 28 are fixedly installed on the lower outer diameter of the diagonal support frames 25. By operating the locking rings 28, the diagonal support rods 26 can be telescopically adjusted to accurately control the height of the equipment to meet the needs of different surveying and mapping scenarios.

[0042] Furthermore, a pressure plate 33 is movably installed at the inner bottom of the hexagonal table 31, and a pressure twist 34 is fixedly connected to the bottom end of the pressure plate 33, and the end of the pressure twist 34 extends to the outside of the hexagonal table 31. Both sides of the top of the pressure plate 33 are connected to the top wall of the hexagonal table 31 through a reset spring 35, and a pressure rod 36 is fixedly connected to the middle of the top of the pressure plate 33. By pressing the pressure twist 34, the pressure plate 33 can be driven to move, thereby realizing the opening and contraction operation of the diagonal support frame 25.

[0043] Furthermore, a fixed seat 37 is fixedly connected to the inner top of the inner rod 30, and a movable seat 38 is movably installed inside the fixed seat 37. Oblique grooves 39 are provided on both sides of the movable seat 38. A positioning pin 40 is fixedly connected to one end of the movable seat 38. A plurality of positioning holes 45 are provided on one side of the outer rod 29. The other end of the movable seat 38 is connected to the inner side wall of the fixed seat 37 through a compression spring 41. A support plate 42 is fixedly connected to the top of the pressure rod 36. Both sides of the top of the support plate 42 are fixedly connected to support rods 43. Vertical grooves 44 are provided on both sides of the fixed seat 37. The outer walls of the support rods 43 are movably arranged inside the corresponding side vertical grooves 44. The ends of the support rods 43 are movably arranged inside the corresponding side oblique grooves 39. When the pressure plate 33 is pressed to drive the pressure rod 36 to move, the pressure rod 36 drives the two support rods 43 to move through the support plate 42. Since the ends of the support rods 43 are movably arranged in the oblique grooves 39, when the support rods When the rod 43 moves, the limiting effect of the inclined groove 39 is utilized to make the movable seat 38 move inside the fixed seat 37, thereby driving the positioning pin 40 to follow the movement. At this time, the positioning pin 40 retracts into the positioning hole 45, and the limiting effect of the outer rod 29 on the inner rod 30 is released, and the inner rod 30 can move up and down freely. By adjusting the up and down movement of the inner rod 30, the hexagonal table 31 is driven to move. When the hexagonal table 31 moves, it will drive one end of the connecting rod 32 to follow and rotate, so that the other end of the connecting rod 32 will open the three diagonal support frames 25. After controlling the opening angle of the diagonal support frames 25, the compression torsion 34 is released, and the reset spring 35 will drive the pressure plate 33 and the pressure rod 36 to reset. When the pressure rod 36 is reset, it will drive the support rod 43 to reset, and then use the effect of the compression spring 41 to make the positioning pin 40 at one end of the movable seat 38 extend again and get stuck in the new positioning hole 45, completing the limiting effect of the inner rod 30 and the outer rod 29.

[0044] Specifically, the pressing plate 33 is pressed to drive the pressing rod 36 to move, and the pressing rod 36 drives the two supporting rods 43 to move through the supporting plate 42. Since the ends of the supporting rods 43 are movably arranged in the inclined slots 39, when the supporting rods 43 move, the movable seat 38 moves inside the fixed seat 37 by the limiting effect of the inclined slots 39, thereby driving the positioning pin 40 to follow the movement. At this time, the positioning pin 40 retracts into the positioning hole 45, and the limiting effect of the outer rod 29 on the inner rod 30 is released, and the inner rod 30 can move up and down freely. By adjusting the up and down movement of the inner rod 30, The hexagonal table 31 is driven to move. When the hexagonal table 31 moves, one end of the connecting rod 32 is driven to move and rotate, so that the other end of the connecting rod 32 opens the three diagonal support frames 25. After controlling the opening angle of the diagonal support frames 25, the compression torsion 34 is released, and the reset spring 35 drives the pressure plate 33 and the pressure rod 36 to reset. When the pressure rod 36 is reset, it drives the support rod 43 to reset. Then, by using the action of the compression spring 41, the positioning pin 40 at one end of the movable seat 38 is re-extended and stuck in the new positioning hole 45, completing the limiting effect of the inner rod 30 and the outer rod 29.

[0045] 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. A surveying instrument positioning device for engineering surveying and mapping, comprising a lower mounting seat (1), characterized in that: Three electric cylinders (2) are movably mounted on the outer side of the top of the lower mounting seat (1), and the driving ends of the electric cylinders (2) are movably mounted on the bottom of the upper mounting seat (3). The top of the upper mounting seat (3) is fixedly connected to a placement table (8), and a transmission shaft (9) is movably mounted in the middle of the placement table (8). An active bevel gear (13) is fixedly mounted on the middle outer diameter of the transmission shaft (9). Screw rods (14) are movably mounted on the four inner side walls of the placement table (8), and sliders (15) are threadedly connected on the outer diameter of the screw rods (14). The upper surface of the placement table (8) is provided with a corresponding position of each screw rod (14). The top end of the slider (15) passes through the inside of the corresponding side of the slider (16) and is fixedly connected to a clamping block (17); three diagonal brackets (25) are movably installed at the bottom of the lower mounting seat (1); an outer rod (29) is fixedly connected to the middle of the bottom end of the lower mounting seat (1); an inner rod (30) is movably installed at the bottom of the outer rod (29); a hexagonal platform (31) is fixedly connected to the bottom end of the inner rod (30); a connecting rod (32) is movably installed on the outer wall of the hexagonal platform (31) and the corresponding side of each diagonal bracket (25); and the end of the connecting rod (32) is movably installed on the inner side of the diagonal bracket (25) on the corresponding side.

2. A surveying instrument positioning device for engineering surveying and mapping according to claim 1, characterized in that: A semicircular groove (4) is provided in the middle of the lower mounting seat (1), a semicircular counterweight (5) is movably arranged inside the semicircular groove (4), a mark point mark (6) is provided in the middle of the upper surface of the semicircular counterweight (5), and a calibration camera (7) is fixedly installed in the middle of the bottom end of the upper mounting seat (3).

3. The surveying instrument positioning device for engineering surveying and mapping according to claim 1, characterized in that: A worm wheel (10) is fixedly mounted on the lower outer diameter of the transmission shaft (9), a worm (11) is movably mounted on one side of the interior of the placement platform (8), and the worm (11) and the inner ends of the worm wheel (10) are meshed and connected, and one end of the worm (11) extends to the outside of the placement platform (8) and is fixedly connected to a rocker (12).

4. The surveying instrument positioning device for engineering surveying and mapping according to claim 1, characterized in that: The inner end of the screw rod (14) is fixedly connected to a short shaft (18), and the outer diameter of the short shaft (18) is fixedly connected to a clamping spring (19). The inner end of the clamping spring (19) is provided with a driven bevel gear (20), and the bottom end of the driven bevel gear (20) is meshed and connected with the top of the driving bevel gear (13). The inner end of the driven bevel gear (20) is fixedly connected to a first clamping plate (21), and the outer diameter of the first clamping plate (21) is provided with a plurality of round head clamping grooves (22). The inner end of the short shaft (18) is fixedly connected to a second clamping plate (23), and the outer diameter of the second clamping plate (23) is fixedly connected to a plurality of round head pins (24), and the ends of the round head pins (24) are arranged inside the round head clamping grooves (22) on the corresponding side.

5. The surveying instrument positioning device for engineering surveying and mapping according to claim 1, characterized in that: The interior of the diagonal support frame (25) is movably provided with a diagonal support rod (26), the bottom end of each diagonal support rod (26) passes through the bottom of the diagonal support frame (25) on the corresponding side and is fixedly connected with a supporting foot (27), and a locking ring (28) is fixedly provided on the outer diameter of the lower side of the diagonal support frame (25).

6. The surveying instrument positioning device for engineering surveying and mapping according to claim 1, characterized in that: A pressure plate (33) is movably mounted on the inner bottom of the hexagonal table (31); a pressure twist (34) is fixedly connected to the bottom end of the pressure plate (33), and the end of the pressure twist (34) extends to the outside of the hexagonal table (31); both sides of the top end of the pressure plate (33) are connected to the top wall of the hexagonal table (31) through a return spring (35); and a pressure rod (36) is fixedly connected to the middle of the top end of the pressure plate (33).

7. A surveying instrument positioning device for engineering surveying and mapping according to claim 6, characterized in that: The inner top of the inner rod (30) is fixedly connected to a fixed seat (37), a movable seat (38) is movably installed inside the fixed seat (37), both sides of the movable seat (38) are provided with inclined grooves (39), one end of the movable seat (38) is fixedly connected to a positioning pin (40), and one side of the outer rod (29) is provided with a plurality of positioning holes (45).

8. The surveying instrument positioning device for engineering surveying and mapping according to claim 7, characterized in that: The other end of the movable seat (38) is connected to the inner wall of the fixed seat (37) through a compression spring (41); the top end of the compression rod (36) is fixedly connected to a support plate (42); both sides of the top end of the support plate (42) are fixedly connected to support rods (43); both sides of the fixed seat (37) are provided with vertical grooves (44); the outer walls of the support rods (43) are movably arranged inside the vertical grooves (44) on the corresponding sides; and the ends of the support rods (43) are movably arranged inside the inclined grooves (39) on the corresponding sides.

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