A continuous measurement device for land surveying

Abstract

The present invention discloses a continuous measurement device for land surveying, belonging to the technical field of land surveying. The continuous measurement device for land surveying includes a total station and a tripod. The tripod includes a support plate and three legs. The three legs are respectively rotatably connected to the bottom wall of the support plate. A threaded groove is formed at the center position of the bottom wall of the support plate, and a screw rod is threadedly connected in the threaded groove. The bottom of the screw rod is fixedly connected with a telescopic rod, and the other end of the telescopic rod is rotatably connected with a fixed plate; a attaching plate is rotatably connected to the side wall of each leg facing the center position of the support plate, and an auxiliary mechanism for assisting positioning is arranged in the opening. By arranging a number of devices for fixing the position of the tripod at the bottom of the total station, the present invention enables the staff to ensure the fork angle and position of the tripod when carrying the total station to transfer points, thereby achieving the purpose of quickly leveling the total station and continuous measurement.

Description

Technical Field

[0001] The present invention belongs to the technical field of land surveying and mapping, and particularly relates to a continuous measurement device for land surveying and mapping. Background Art

[0002] Land surveying and mapping refers to the process of measuring, recording, and depicting the positions, shapes, sizes, and mutual relationships of natural geographical elements or artificial facilities on the earth's surface using various technologies and methods. Whether in land right confirmation and municipal planning, or in engineering construction and environmental protection, it provides necessary basic data and important technical support. Through precise land surveying and mapping, land resources can be better utilized and protected, promoting the sustainable development of social economy. Currently, the instruments used for land surveying and mapping can be roughly divided into instruments for measuring distance and angle, instruments for measuring elevation, instruments for measuring area, and remote sensing measurement instruments, etc.

[0003] Taking the total station as an example, the total station is a widely used surveying and mapping instrument. After leveling the instrument, it is necessary to align the crosshair in the eyepiece with several prisms in the distance for the total station to perform calculations. Both the prism and the total station need to be set up in the construction site in advance. Due to its simple structure, the prism can be set up quickly, and all prisms can be set up at one time. However, due to cost considerations, the number of total stations is usually small. If you want to measure multiple groups of prisms separately, the staff needs to manually carry the total station to different positions. Although the ground flatness of some work sites is relatively high, it is very difficult to ensure that the support of the total station does not shift during the handling process. Therefore, when multi-position continuous measurement is required, the total station needs to be leveled again and again. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a continuous measurement device for land surveying and mapping.

[0005] The technical solution adopted to solve the above technical problem is:

[0006] A continuous measurement device for land surveying and mapping includes a total station and a tripod. The tripod includes a support plate and three legs. The total station is installed on the support plate. The three legs are respectively rotatably connected to the bottom wall of the support plate. A threaded groove is opened at the center position of the bottom wall of the support plate. A screw rod is threadedly connected in the threaded groove. The bottom of the screw rod is fixedly connected to a telescopic rod. The other end of the telescopic rod is rotatably connected to a fixed plate;

[0007] One side wall of each leg facing the center position of the support plate is rotatably connected to a attaching plate. An opening is opened at one end of each attaching plate facing the center position of the support plate. An auxiliary mechanism for helping positioning is arranged in the opening;

[0008] The fixed disk includes a top disk and a bottom disk. One end of the telescopic rod away from the support plate is rotatably connected to the top wall of the top disk. The bottom wall of the top disk is rotatably connected to the top wall of the bottom disk. Three movement grooves are formed in the top of the top disk. One end of the three movement grooves facing away from the center position of the fixed disk is open. Movement blocks are slidably connected in the movement grooves. A driving mechanism for driving the movement blocks is jointly arranged between the movement blocks and the top disk.

[0009] Through the above technical solution, a number of devices for fixing the position of the tripod are arranged at the bottom of the total station, so that when the staff carry the total station to transfer points, the fork angle and position of the tripod can be guaranteed, and thus the purpose of quickly leveling the total station and continuous measurement can be achieved.

[0010] Furthermore, transverse plates are fixedly arranged on both side walls of the movement groove. Transverse grooves are also formed in both side walls of the movement block. The two transverse plates are respectively slidably connected to the transverse grooves on both sides of the movement block.

[0011] Through the above technical solution, the arrangement of the transverse plates and the transverse grooves enables the movement block to slide more stably in the movement groove, and the transverse plates can also guide the movement block to move along its direction, thus avoiding the shaking of the movement block.

[0012] Furthermore, the auxiliary mechanism includes two clamping rods, two rotating rods, two central rods, two arc-shaped blocks and two abutting rods. The two central rods are respectively fixedly arranged in the openings. The two rotating rods are respectively rotatably connected to the side walls of the two central rods. The two clamping rods are respectively fixedly connected to the side walls of the two rotating rods facing the fixed disk. The two arc-shaped blocks are respectively fixedly connected to the side walls of the two rotating rods away from the clamping rods. A fault is formed in the top of the arc-shaped block. Two through holes are formed in the top wall of the attaching plate. The two abutting rods respectively pass through the two through holes. One ends of the two abutting rods respectively abut against the top walls of the arc-shaped blocks.

[0013] Through the above technical solution, the attaching plate originally attached to the side wall of the supporting leg can be lifted to a horizontal position when the position of the supporting leg needs to be fixed. Then, the extension plate in the fixed disk can extend into the opening, so that the position between the attaching plate and the fixed disk is fixed, and thus the angular position of the supporting leg is determined.

[0014] Furthermore, a lifting plate is jointly fixedly connected to one ends of the two abutting rods away from the arc-shaped blocks. The outer diameter of one end of the abutting rod close to the lifting plate is smaller than the outer diameter of the end abutting against the arc-shaped block. The bottom wall of the lifting plate abuts against the side wall of the attaching plate.

[0015] Through the above technical solution, the lifting plate fixes the two abutting rods together. The staff can lift the lifting plate to drive the two abutting rods to rise at the same time. Moreover, since the thickness of the abutting rods is not uniform, when the attaching plate moves along with the total station, the larger lower abutting rod will not fall out of the through hole.

[0016] Furthermore, the driving mechanism includes a connecting block, a chuck, three clamping teeth, three dial wheels, three threaded rods, three displacement blocks, three connecting rods and three extension plates. The connecting block is fixedly connected to the top of the chassis, the chuck is fixedly arranged on the top wall of the connecting block, the three clamping teeth are respectively fixedly arranged on the bottom wall of the moving block, the three clamping teeth are respectively engaged with the chuck, a cavity is formed in the moving block, a rotating hole is formed in the top of the moving block, the rotating hole is communicated with the cavity, the dial wheel is rotatably connected to the side wall of the rotating hole, the threaded rod is fixedly connected to the central position of the dial wheel, one end of the threaded rod away from the dial wheel is rotatably connected to the side wall of the cavity, the displacement block is in threaded connection with the threaded rod, the connecting rod is fixedly connected to the bottom wall of the displacement block, the extension plate is fixedly connected to the side wall of one end of the connecting rod away from the displacement block, an extension opening is formed in one end of the moving block facing the attaching plate, the extension plate extends out from the extension opening, the extension plate extends into the opening, and one end of the extension plate abuts against the side walls of the two arc-shaped blocks.

[0017] Through the above technical solution, when the staff rotates the chassis, the chuck can be driven to rotate, so that several moving blocks are synchronously driven to expand outwards or contract inwards, which is convenient for the staff to quickly deploy the total station for continuous measurement.

[0018] Furthermore, clamping grooves are respectively formed in the two side walls of the extension plate, the two clamping rods are respectively clamped with the side walls of the clamping grooves, and one end of the clamping rod abutting against the arc-shaped block is also arc-shaped.

[0019] Through the above technical solution, after the extension plate extends into the opening, the extension plate will push the arc-shaped block inwards, so that the rotating rod rotates, and the clamping rod at the other end of the rotating rod will be clamped into the clamping groove on the side wall of the extension plate, thereby locking the position between the extension plate and the attaching plate, and the arc-shaped design is also more convenient for the clamping rod to turn into or out of the clamping groove.

[0020] Furthermore, the telescopic rod includes a movable rod and a fixed rod. The screw rod is fixedly connected to the top of the movable rod. The movable rod is sleeved inside the fixed rod. The bottom of the fixed rod is rotatably connected to the top of the fixed disk. Vertical grooves are formed in the side wall of the movable rod.

[0021] Through the above technical solution, the telescopic rod not specifically mentioned above is further defined. The movable rod can extend out of the fixed rod, and the cooperation between the two can cooperate with the total station to measure at different heights.

[0022] Further, a pressing groove is formed in the side wall of the fixed rod. An operating block is arranged in the pressing groove. A short block is fixedly connected to the side wall of the operating block facing the movable rod. A friction block is fixedly connected to the side wall of the short block facing away from the operating block. The friction block is located above the vertical groove. Baffles are fixedly connected to the two side walls of the pressing groove respectively. A telescopic spring is fixedly connected to the side wall of the baffle facing the operating block. The other end of the telescopic spring is fixedly connected to the side wall of the operating block.

[0023] Through the above technical solution, when the staff presses the operating block, the friction block can be pressed into the vertical groove, so that the position between the movable rod and the fixed rod is fixed, and then the fixed disk can fix the distance between the supporting legs, which is convenient for the staff to carry the supporting legs and the total station to transfer points together.

[0024] Further, a toggle rod is rotatably connected to the side wall of the pressing groove. A plug rod is fixedly connected to the side wall of the other end of the toggle rod. A heart-shaped groove is formed in the side wall of the operating block. The end of the plug rod away from the toggle rod extends into the heart-shaped groove.

[0025] Through the above technical solution, the setting of the heart-shaped groove enables the staff to achieve different effects with two presses. When pressing for the first time, the plug rod will be in the middle position of the heart-shaped groove. After the second press, the plug rod will slide to the end position of the heart-shaped groove, so that the friction block leaves the vertical groove, which is convenient for the staff to adjust the distance between the movable rod and the fixed rod.

[0026] The beneficial effects of the present invention are as follows:

[0027] (1) By arranging a chassis, a top plate, a connecting block, a chuck, a chuck tooth, a dial, a threaded rod, a displacement block, a connecting rod and an extension plate inside the tripod at the bottom of the total station, the present invention enables the staff to fix the current unfolding angle after the first unfolding of the tripod. When continuous measurement is required, even if the tripod is carried, it will not affect the unfolding angle of the tripod. Therefore, the staff can quickly deploy the total station and the tripod, which is convenient for the staff to continuously and quickly measure;

[0028] (2) The top of the fixed disk of the present invention is fixedly arranged at the bottom of the support plate through the cooperation of a screw rod and a threaded groove. When the fixed disk is not needed, it can be removed without affecting the folding of the tripod. When it is needed, it can also be quickly installed at the bottom of the support plate of the tripod. At the same time, the telescopic rod arranged between the fixed disk and the support plate also ensures that the fixed disk can still be fixedly limited with the attaching plate on the side wall of the tripod after the tripod is forked;

[0029] (3) The present invention synchronously drives the three moving blocks by rotating the chassis, thereby quickly driving the three moving blocks roughly to the specified position. If the extension plate is to be driven more precisely, the staff needs to manually rotate the dial to adjust it, so that no matter what angle the legs are unfolded to, the extension plate can be inserted into the inside of the sticking plate, thereby fixing the position between the fixed plate and the legs, making it convenient for the staff to synchronously move the total station and the tripod. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the thread groove and the spiral rod in the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the fixed plate and the supporting legs in the present invention;

[0033] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0034] Figure 5 It is a structural schematic diagram of the auxiliary mechanism in the present invention;

[0035] Figure 6 It is a schematic diagram of the structure inside the motion block of the present invention;

[0036] Figure 7 It is a structural schematic diagram of the chuck and the teeth in the present invention;

[0037] Figure 8 It is a structural schematic diagram of the telescopic rod in the present invention;

[0038] Figure 9 yes Figure 8 A partial enlarged view of point B in the middle.

[0039] Figure numerals: 1, total station; 2, support plate; 3, support leg; 4, threaded groove; 5, screw rod; 7, sticking plate; 8, opening; 9, top plate; 10, bottom plate; 11, movement groove; 12, movement block; 13, cross plate; 14, cross groove; 15, clamping rod; 16, rotating rod; 17, center rod; 18, arc block; 19, stop rod; 20, fault; 21, perforation; 22, lifting plate; 23, connecting block; 24, Chuck; 25. Clamping teeth; 26. Pulley; 27. Threaded rod; 28. Displacement block; 29. ​​Connecting rod; 30. Extension plate; 31. Rotation hole; 32. Extension opening; 33. Slot; 34. Movable rod; 35. Fixed rod; 36. Vertical slot; 37. Pressing slot; 38. Pressing block; 39. Short block; 40. Friction block; 41. Baffle; 42. Telescopic spring; 43. Toggle rod; 44. Inserting rod; 45. Heart-shaped slot. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] As Figure 1 - Figure 9 shown, a continuous measurement device for land surveying in this embodiment includes a total station 1 and a tripod. The tripod includes a support plate 2 and three legs 3. The total station 1 is installed on the support plate 2. The three legs 3 are respectively rotatably connected to the bottom wall of the support plate 2. The connection relationship between the total station 1 and the support plate 2 is the same as the common connection relationship on the market, and it can be snap-fitted or freely removed.

[0042] Referring to Figure 2 and Figure 3 , a threaded groove 4 is provided at the center of the bottom wall of the support plate 2. A screw rod 5 is threadedly connected in the threaded groove 4. The bottom of the screw rod 5 is fixedly connected to a telescopic rod. The other end of the telescopic rod is rotatably connected to a fixed disk. The telescopic rod includes a movable rod 34 and a fixed rod 35. The screw rod 5 is fixedly connected to the top of the movable rod 34. The movable rod 34 is sleeved inside the fixed rod 35. The bottom of the fixed rod 35 is rotatably connected to the top of the fixed disk. A vertical groove 36 is provided on the side wall of the movable rod 34. Here, the telescopic rod not specifically described above is further defined. The movable rod 34 can extend out of the fixed rod 35, and their cooperation can cooperate with the legs 3 to be extended to different angles for measurement.

[0043] Referring to Figure 8 and Figure 9 , a pressing groove 37 is provided on the side wall of the fixed rod 35. A pressing block 38 is installed in the pressing groove 37. A short block 39 is fixedly connected to the side wall of the pressing block 38 facing the movable rod 34. A friction block 40 is fixedly connected to the side wall of the short block 39 facing away from the pressing block 38. The friction block 40 is located above the vertical groove 36. The side wall of the friction block 40 facing the vertical groove 36 can be provided with a wear-resistant layer to further enhance the friction between the friction block 40 and the vertical groove 36. Baffles 41 are respectively fixedly connected to the two side walls of the pressing groove 37. A telescopic spring 42 is fixedly connected to the side wall of the baffle 41 facing the pressing block 38. The other end of the telescopic spring 42 is fixedly connected to the side wall of the pressing block 38. The force exerted by the telescopic spring 42 on the pressing block 38 will cause the pressing block 38 to be in a lifted state, that is, the friction block 40 does not contact the vertical groove 36.

[0044] A toggle lever 43 is rotatably connected to the side wall of the pressing groove 37. A plug rod 44 is fixedly connected to the side wall of the other end of the toggle lever 43. A heart-shaped groove 45 is formed in the side wall of the pressing block 38. One end of the plug rod 44 away from the toggle lever 43 extends into the heart-shaped groove 45. There is a flat position at the notch of the heart-shaped groove 45. Therefore, when the plug rod 44 moves to this position, it can be stuck at this position.

[0045] Refer to Figure 3 、 Figure 4 and Figure 5 , on the side wall of each supporting leg 3 facing the center position of the support plate 2, a attaching plate 7 is rotatably connected. At one end of each attaching plate 7 facing the center position of the support plate 2, an opening 8 is formed. An auxiliary mechanism for helping positioning is arranged in the opening 8. The auxiliary mechanism includes two clamping rods 15, two rotating rods 16, two central rods 17, two arc-shaped blocks 18 and two abutting rods 19. The two central rods 17 are respectively fixedly arranged in the opening 8. The two rotating rods 16 are respectively rotatably connected to the side walls of the two central rods 17. The two clamping rods 15 are respectively fixedly connected to the side walls of the two rotating rods 16 facing the fixed disk. The two arc-shaped blocks 18 are respectively fixedly connected to the side walls of the two rotating rods 16 away from the clamping rods 15. A fault 20 is formed at the top of the arc-shaped block 18. The height of the fault 20 is smaller than the height where the arc-shaped block 18 is located.

[0046] Two through holes 21 are formed in the top wall of the attaching plate 7. The two abutting rods 19 respectively pass through the two through holes 21. One ends of the two abutting rods 19 respectively abut against the top wall of the arc-shaped block 18. The abutting rods 19 originally abut against the top of the arc-shaped block 18. When the arc-shaped block 18 rotates, the abutting rods 19 will be moved onto the fault 20 and thus abut against the side wall of the arc-shaped block 18.

[0047] The two ends of the two abutting rods 19 away from the arc-shaped block 18 are commonly fixedly connected with a lifting plate 22. The outer diameter of one end of the abutting rod 19 close to the lifting plate 22 is smaller than the outer diameter of the end abutting against the arc-shaped block 18. The bottom wall of the lifting plate 22 abuts against the side wall of the attaching plate 7. The lifting plate 22 fixes the two abutting rods 19 together. The staff can lift the lifting plate 22 to drive the two abutting rods 19 to rise at the same time. Moreover, due to the uneven thickness of the abutting rods 19, when the attaching plate 7 moves along with the total station 1, the larger lower ends of the abutting rods 19 will not fall out of the through holes 21.

[0048] Refer to Figure 3The fixed plate includes a top plate 9 and a bottom plate 10. The end of the telescopic rod away from the supporting plate 2 is rotatably connected to the top wall of the top plate 9. The bottom wall of the top plate 9 is rotatably connected to the top wall of the bottom plate 10. Three movement grooves 11 are provided on the top of the top plate 9. The three movement grooves 11 are open at one end facing away from the center of the fixed plate. A movement block 12 is slidably connected in the movement groove 11. Both side walls of the movement groove 11 are fixedly provided with transverse plates 13. Both side walls of the movement block 12 are also provided with transverse grooves 14. The two transverse plates 13 are respectively slidably connected to the transverse grooves 14 on both sides of the movement block 12. The arrangement of the transverse plates 13 and the transverse grooves 14 allows the movement block 12 to slide more stably in the movement groove 11, and the transverse plates 13 can also guide the movement block 12 to move along its direction, thereby preventing the movement block 12 from shaking.

[0049] Reference Figure 3 , Figure 4 , Figure 6 and Figure 7 A driving mechanism for driving the moving block 12 is installed between the moving block 12 and the top plate 9. The driving mechanism includes a connecting block 23, a chuck 24, three latch teeth 25, three dial wheels 26, three threaded rods 27, three displacement blocks 28, three connecting rods 29 and three extension plates 30. The connecting block 23 is fixedly connected to the top of the bottom plate 10, the chuck 24 is fixedly arranged on the top wall of the connecting block 23, the three latch teeth 25 are respectively fixedly arranged on the bottom wall of the moving block 12, and the three latch teeth 25 are respectively connected to the chuck 24. The moving block 12 is meshed, a cavity is opened in the moving block 12, a rotating hole 31 is opened on the top of the moving block 12, the rotating hole 31 is communicated with the cavity, the dial 26 is rotatably connected to the side wall of the rotating hole 31, the threaded rod 27 is fixedly connected to the center position of the dial 26, the end of the threaded rod 27 away from the dial 26 is rotatably connected to the side wall of the cavity, the upper half of the dial 26 extends out of the rotating hole 31, and the center position of the dial 26 is still in the cavity, so when the staff turns the dial 26, the dial 26 can drive the threaded rod 27 to rotate.

[0050] The displacement block 28 is threadedly connected to the threaded rod 27, the connecting rod 29 is fixedly connected to the bottom wall of the displacement block 28, the extension plate 30 is fixedly connected to the side wall of the connecting rod 29 away from the displacement block 28, the end of the motion block 12 facing the sticking plate 7 is provided with a protruding opening 32, the extension plate 30 extends from the protruding opening 32, the extension plate 30 extends into the opening 8, one end of the extension plate 30 is against the side walls of the two arc-shaped blocks 18, and the side walls of the extension plate 30 are respectively provided with a slot 33, and the two clamping rods 15 are respectively engaged with the side walls of the slots 33, and one end of the lever 15 that abuts against the arc block 18 is also arc-shaped. When the extension plate 30 is extended into the opening 8, the extension plate 30 will push the arc block 18 inward, thereby causing the rotating rod 16 to rotate, and the lever 15 at the other end of the rotating rod 16 will be engaged with the slot 33 on the side wall of the extension plate 30, thereby locking the position between the extension plate 30 and the sticking plate 7. The arc-shaped design also makes it easier for the lever 15 to rotate in or out of the slot 33.

[0051] The working principle of this embodiment is as follows. In the initial state, the total station 1 has not been installed on the support plate 2, and the three legs 3 are in a converged state. The attaching plate 7 on the side wall of the leg 3 also fits against the side wall of the leg 3. The telescopic rod together with the fixing plate at the bottom has not been installed at the bottom of the support plate 2;

[0052] During the first measurement, first install the total station 1 on the support plate 2, then unfold the three legs 3, and adjust the angular position of the legs 3 so that the total station 1 is leveled. Then rotate the screw rod 5 into the threaded groove 4. At this time, the pressing block 38 on the side wall of the fixing rod 35 is in a raised state. The staff can adjust the distance between the movable rod 34 and the fixing rod 35 so that the height of the extension plate 30 on the side wall of the moving block 12 is the same as the height after the attaching plate 7 is leveled. Then press the pressing block 38, and the insertion rod 44 slides along the heart-shaped groove 45 to the end position of the heart-shaped groove 45. Then the pressing block 38 will be restricted into the pressing groove 37. At the same time, the short block 39 fixed to the side wall of the pressing block 38 will drive the friction block 40 to enter the vertical groove 36 on the side wall of the movable rod 34 together. While the telescopic spring 42 is stretched, the relative position between the movable rod 34 and the fixing rod 35 is fixed, thus fixing the height of the top plate 9 and the bottom plate 10;

[0053] After the height of the bottom plate 10 is fixed, the staff can rotate the bottom plate 10. Driven by the connecting block 23, the chuck 24 will rotate together with the bottom plate 10. As a result, the teeth 25 on the top of the chuck 24 drive the moving block 12 to move along the movement groove 11 together. The three moving blocks 12 move outward together. When the moving block 12 moves close to the position of the nearest leg 3, the rotation of the bottom plate 10 can be stopped;

[0054] Next, the staff manually rotates the dial wheel 26 one by one. The rotation of the dial wheel 26 will drive the threaded rod 27 to rotate together. The displacement block 28 installed on the threaded rod 27 will drive the connecting rod 29 and the extension plate 30 to extend from the extension port 32. Since the attaching plate 7 is lifted with one hand in advance, the extension plate 30 will enter the attaching plate 7 from the opening 8. Then, the extension plate 30 will squeeze the two arc-shaped blocks 18, causing the two rotating rods 16 to rotate around the central rod 17. The latch rod 15 provided at the other end of the rotating rod 16 will insert into the card slot 33 on the side wall of the extension plate 30. At the same time, the abutting rod 19 that originally abutted against the top wall of the arc-shaped block 18 will move to the fault 20 after the arc-shaped block 18 moves, thus locking the position of the arc-shaped block 18. The abutting rod 19 locks the arc-shaped block 18, and the extension plate 30 is restricted in position by the latch rod 15. The cooperation of the two will fix the position between the extension plate 30 and the attaching plate 7, thus fixing the position between the top plate 9 and the support leg 3. When the staff wants to perform continuous measurements, the total station 1 and the support legs 3 can be moved together, and the angular distances between the support legs 3 will be fixed. After putting down the total station 1, the staff can quickly deploy it, thereby improving the measurement efficiency.

[0055] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A continuous measuring device for land surveying and mapping, comprising a total station (1) and a tripod, wherein the tripod comprises a support plate (2) and three legs (3), wherein the total station (1) is mounted on the support plate (2), and the three legs (3) are rotatably connected to the bottom wall of the support plate (2), respectively, and characterized in that: A thread groove (4) is provided at the center of the bottom wall of the support plate (2), a screw rod (5) is threadedly connected in the thread groove (4), a telescopic rod is fixedly connected to the bottom of the screw rod (5), and the other end of the telescopic rod is rotatably connected to a fixed plate; A side wall of each support leg (3) facing the center of the support plate (2) is rotatably connected to a plate (7), and an opening (8) is provided at one end of each plate (7) facing the center of the support plate (2). An auxiliary mechanism for assisting positioning is provided in the opening (8), and the auxiliary mechanism comprises two clamping rods (15), two rotating rods (16), two center rods (17), two arc blocks (18) and two abutting rods (19). The two center rods (17) are respectively fixed in the opening (8), and the two rotating rods (16) are respectively fixed in the opening (8). The two clamping rods (15) are respectively connected to the side walls of the two rotating rods (16) facing the fixed plate, and the two arc blocks (18) are respectively connected to the side walls of the two rotating rods (16) facing the fixed plate. The two arc blocks (18) are respectively connected to the side walls of the two rotating rods (16) away from the clamping rods (15). A fault (20) is provided on the top of the arc block (18). Two through holes (21) are provided on the top wall of the sticking plate (7). The two abutting rods (19) are respectively extended from the two through holes (21). One end of the two abutting rods (19) is respectively abutted against the top wall of the arc block (18). The fixed plate comprises a top plate (9) and a bottom plate (10); the end of the telescopic rod away from the support plate (2) is rotatably connected to the top wall of the top plate (9); the bottom wall of the top plate (9) is rotatably connected to the top wall of the bottom plate (10); three movement grooves (11) are provided on the top of the top plate (9); the ends of the three movement grooves (11) facing away from the center of the fixed plate are open; a movement block (12) is slidably connected in the movement groove (11); a driving mechanism for driving the movement block (12) is provided between the movement block (12) and the top plate (9); The driving mechanism comprises a connecting block (23), a chuck (24), three latching teeth (25), three dial wheels (26), three threaded rods (27), three displacement blocks (28), three connecting rods (29) and three extension plates (30), wherein the connecting block (23) is fixedly connected to the top of the chassis (10), the chuck (24) is fixedly arranged on the top wall of the connecting block (23), the three latching teeth (25) are respectively fixedly arranged on the bottom wall of the moving block (12), the three latching teeth (25) are respectively meshed with the chuck (24), and the moving block (12) is provided with a plurality of latching teeth (25). A cavity is provided, a rotating hole (31) is provided on the top of the movement block (12), the rotating hole (31) is communicated with the cavity, the dial wheel (26) is rotatably connected to the side wall of the rotating hole (31), the threaded rod (27) is fixedly connected to the center position of the dial wheel (26), the end of the threaded rod (27) away from the dial wheel (26) is rotatably connected to the side wall of the cavity, the displacement block (28) is threadedly connected to the threaded rod (27), the connecting rod (29) is fixedly connected to the bottom wall of the displacement block (28), and the extension plate (30) is away from the connecting rod (29). One end of the displacement block (28) is fixedly connected to the side wall, and the end of the movement block (12) facing the contact plate (7) is provided with a protruding opening (32), and the extension plate (30) extends from the protruding opening (32), and the extension plate (30) extends into the opening (8), and one end of the extension plate (30) abuts against the side walls of the two arc-shaped blocks (18), and the side walls of the extension plate (30) are respectively provided with a clamping groove (33), and the two clamping rods (15) are respectively clamped with the side walls of the clamping groove (33), and the end of the clamping rod (15) abutting against the arc-shaped block (18) is also designed to be arc-shaped.

2. The continuous measuring device for land surveying and mapping according to claim 1, characterized in that: The side walls on both sides of the movement groove (11) are fixedly provided with transverse plates (13), and the side walls on both sides of the movement block (12) are also provided with transverse grooves (14). The two transverse plates (13) are respectively slidably connected to the transverse grooves (14) on both sides of the movement block (12).

3. The continuous measuring device for land surveying and mapping according to claim 1, characterized in that: The two abutment rods (19) are fixedly connected to a lifting plate (22) at one end away from the arc block (18); the outer diameter of the end of the abutment rod (19) close to the lifting plate (22) is smaller than the outer diameter of the end abutting against the arc block (18); the bottom wall of the lifting plate (22) abuts against the side wall of the sticking plate (7).

4. The continuous measuring device for land surveying and mapping according to claim 1, characterized in that: The telescopic rod comprises a movable rod (34) and a fixed rod (35), the spiral rod (5) is fixedly connected to the top of the movable rod (34), the movable rod (34) is sleeved inside the fixed rod (35), the bottom of the fixed rod (35) is rotatably connected to the top of the fixed plate, and a vertical groove (36) is provided on the side wall of the movable rod (34).

5. The continuous measuring device for land surveying and mapping according to claim 4, characterized in that: A pressing groove (37) is provided on the side wall of the fixed rod (35), a pressing block (38) is arranged in the pressing groove (37), a short block (39) is fixedly connected to the side wall of the pressing block (38) facing the movable rod (34), a friction block (40) is fixedly connected to the side wall of the short block (39) facing away from the pressing block (38), the friction block (40) is located above the vertical groove (36), baffles (41) are fixedly connected to the side walls on both sides of the pressing groove (37), a telescopic spring (42) is fixedly connected to the side wall of the baffle (41) facing the pressing block (38), and the other end of the telescopic spring (42) is fixedly connected to the side wall of the pressing block (38).

6. The continuous measuring device for land surveying and mapping according to claim 5, characterized in that: The side wall of the pressing groove (37) is rotatably connected to a toggle rod (43), and the other end of the side wall of the toggle rod (43) is fixedly connected to an insertion rod (44). The side wall of the pressing block (38) is provided with a heart-shaped groove (45), and one end of the insertion rod (44) away from the toggle rod (43) extends into the heart-shaped groove (45).

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