Leveling device for territorial planning surveying and mapping

Abstract

The invention discloses a leveling device for territorial planning surveying and mapping, and relates to the technical field of leveling, the leveling device comprises a measurer main body, two side stretching strips and a rotating handle, inner stretching grooves are formed in the sides, close to each other, of the two side stretching strips, and the two corresponding ends of the measurer main body are inserted into the inner stretching grooves respectively; an inner stretching groove is formed in the measuring device main body, a limiting sliding block is fixedly installed in the inner stretching groove, limiting sliding grooves are formed in the two corresponding sides of the measuring device main body, and the limiting sliding block is inserted into the limiting sliding grooves and is in sliding connection with the limiting sliding grooves. When the land level height is measured, the measuring mechanism can be lifted by using the two measuring rods, so that two relatively free and representative points can be freely selected to measure the level difference during use, and the interference of the terrain on the measurement result can be reduced as much as possible during use, thereby effectively reducing the measurement error.

Description

Technical Field

[0001] The invention relates to the technical field of leveling, and in particular to a leveling device for land planning and surveying. Background Art

[0002] Land planning and surveying is an engineering project that measures land used by humans. It is extremely important and requires land reclamation and measurement of the planned site. It mainly includes soil testing and the required length, width and slope information of the land to facilitate subsequent construction. Leveling is a method of measuring the height difference between two points on the ground using a level and a level rod.

[0003] At present, the measurement method using a level and a level rod is generally to measure between two distant places. However, it is inconvenient to measure when the relative level difference is large. For this reason, we propose a leveling measurement device for land planning and surveying. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a leveling device for land planning and surveying, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: A leveling measuring device for land planning and surveying, including a measuring instrument body, two side stretching bars and a rotating handle, the two side stretching bars are provided with an inner stretching groove on the side close to each other, the corresponding two ends of the measuring instrument body are respectively inserted into the inner stretching groove, the inner stretching groove is fixedly installed with a limit slide block, the corresponding two sides of the measuring instrument body are provided with a limit slide groove, the limit slide block is inserted into the inner limit slide groove and slidably connected thereto, the measuring instrument body is provided with a second inner mounting groove, the second inner mounting groove is fixedly installed with two measuring fan plates, a measuring swing arm is rotatably connected between the two measuring fan plates, an indicating block is fixedly installed at the bottom of the measuring swing arm, the two side stretching bars are provided with a side mounting groove on the side away from each other, the two side mounting grooves are rotatably connected with an inner rotating block, the inner rotating block is slidably connected with a measuring rod, a one-way limiting mechanism is provided inside the inner rotating block, and an adjustment mechanism is provided on the top of the side stretching bar.

[0006] Preferably, a scale bar is printed on one side of the measuring fan plate, and the scale bar can be used to effectively observe the relative inclination angle between the indicator block and the measuring fan plate, thereby facilitating level measurement.

[0007] Preferably, a third inner mounting groove is provided inside the measuring device body and on one side of the second inner mounting groove, an inner sliding mounting block is slidably connected inside the third inner mounting groove, a magnet is fixedly installed on the bottom of the inner sliding mounting block, a second spring is fixedly installed on the top of the inner wall of the third inner mounting groove, the bottom of the second spring is fixedly connected to the top of the inner sliding mounting block, an outer sliding groove is provided on one side of the measuring device body close to the second inner mounting groove, a push-pull switch is slidably connected inside the outer sliding groove, the inner sliding mounting block is fixedly connected to the push-pull switch, the measuring fan plate and the indicating block are made of iron, and the magnetic force of the magnet can be used to locate the relative distance between the measuring fan plate and the indicating block to avoid errors caused by shaking during observation.

[0008] Preferably, the measuring rod includes a measuring main rod, the measuring main rod is slidably connected to the inner rotating block, an inner telescopic insertion rod is slidably connected inside the measuring main rod, inner guide grooves are provided on the two corresponding sides of the inner wall of the measuring main rod, guide sliders are fixedly installed on the tops of the corresponding sides of the inner telescopic insertion rod, the guide sliders are slidably connected to the inner guide grooves of the rod, an insertion cone is fixedly installed on the bottom of the inner telescopic insertion rod, and the measuring main rod is used as a benchmark, so that the leveling can be conveniently measured using two points on the slope.

[0009] Preferably, the one-way limit mechanism includes a first inner mounting groove, which is arranged inside the inner rotating block, and the internal rotation of the first inner mounting groove is connected with a limit paddle, a first spring is fixedly installed on one side of the inner wall of the first inner mounting groove, and one end of the first spring is fixedly connected to one end of the limit paddle, and a limit adjustment slot is arranged on one side of the measuring main rod, and the limit adjustment slot cooperates with the limit paddle. By utilizing the one-way movable limit mechanism, the height of the measuring main rod can be conveniently adjusted to avoid retraction when inserted into the soil, which is prone to errors.

[0010] Preferably, the adjusting mechanism includes a first outer mounting block, the first outer mounting block is fixedly mounted on the top of the side stretching strip, the first outer mounting block is internally rotatably connected to the first rotating column, the first outer mounting block is internally provided with a fourth internal mounting slot, one end of the first rotating column is inserted into the fourth internal mounting slot and fixedly installed with the first bevel gear, the first outer mounting block is internally rotatably connected to the second outer mounting block, the second outer mounting block is internally provided with a fifth internal mounting slot, the second outer mounting block is internally rotatably connected to the second rotating column, one end of the second rotating column extends to the inside of the fifth internal mounting slot and is fixedly installed with a worm, and the end of the second rotating column away from the worm passes through the second outer mounting block and is fixedly installed with the second bevel gear. The second bevel gear is meshed with the first bevel gear, and a worm wheel is rotatably connected inside the fifth inner mounting groove, and the worm wheel is meshed with the worm, and the first pulley is fixedly installed on both sides corresponding to the worm wheel, and an extension block is fixedly installed on one side of the second outer mounting block, and a linkage gear is rotatably connected inside the extension block, and the second pulley is fixedly installed on both sides corresponding to the linkage gear, and a transmission belt is arranged inside the second pulley, and the second pulley is transmission-connected to the first pulley through the transmission belt, and a linkage rack is fixedly installed on one side of the measuring main rod, and the linkage gear is meshed with the linkage rack, so as to facilitate the simultaneous adjustment of the positions of the measuring main rods on both sides relative to the inner rotating block, and the same structure on both sides can avoid the occurrence of errors.

[0011] Preferably, inner linkage grooves are provided at both corresponding ends of the rotating handle, and a linkage slider is fixedly installed on one side of the first rotating column. The linkage slider is inserted into the inner linkage groove and slidably connected thereto, and the linkage slider and the inner linkage groove are square structures that cooperate with each other, so that it is convenient to use the rotating handle to simultaneously drive the two first rotating columns to rotate.

[0012] Preferably, limiting plates are fixedly installed on the corresponding two sides of the extension block, third springs are fixedly installed on the sides where the two limiting plates are close to each other, clamping plates are fixedly installed on the sides where the two third springs are close to each other, and a plurality of rotating rollers are rotatably connected inside the clamping plates, which can clamp the measuring main rod from both sides, and the use of the laterally arranged rotating rollers will not affect the vertical rise and fall of the measuring main rod.

[0013] Preferably, the relative width between the two clamping pieces is the same as the width of the measuring main rod, thereby increasing the stability of clamping.

[0014] The present invention provides a leveling device for land planning and surveying, which has the following beneficial effects:

[0015] 1. The leveling device used for land planning and surveying adopts an elevated measuring mechanism. When measuring the land level height, two measuring rods can be used to elevate the measuring mechanism, so that two relatively free and representative points can be freely selected for level difference measurement during use. Moreover, the interference of terrain on the measurement results can be minimized during use, thereby effectively reducing measurement errors.

[0016] 2. The leveling measuring device used for land planning and surveying adopts a foldable adjustment mechanism, which can lift up or drop down the measuring rods on both sides at the same time when in use, and the synchronous adjustment can ensure that the measuring rods on both sides rise and fall synchronously, ensuring that the heights on both sides will not be different due to different adjustment heights during measurement, making the adjustment of the measuring device more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the expanded structure of the present invention;

[0019] Figure 3 is a cross-sectional view of the measuring device body of the present invention;

[0020] Figure 4 is a cross-sectional view of a measuring rod of the present invention;

[0021] Figure 5 For the present invention Figure 2 A in the enlarged view;

[0022] Figure 6 For the present invention Figure 2 The enlarged view of point B in the figure;

[0023] Figure 7 For the present invention Figure 3 The enlarged view of point C in the figure;

[0024] Figure 8 For the present invention Figure 4 Enlarged view of point D in .

[0025] In the figure: 1, measuring device body; 2, side stretching strip; 3, inner stretching groove; 4, limit slider; 5, limit slide groove; 7, side mounting groove; 8, inner rotating block; 9, measuring rod; 91, measuring main rod; 92, rod inner guide groove; 93, guide slider; 94, inner telescopic insertion rod; 95, insertion cone; 10, first inner mounting groove; 11, limit paddle; 12, first spring; 13, limit adjustment slot; 14, second inner mounting groove; 15, measuring fan plate; 16, scale bar; 17, measuring swing arm; 18, indicator block; 19, third inner mounting groove; 20, inner sliding mounting block; 21, second spring; 22, magnet; 2 3. External sliding groove; 24. Push-pull switch; 25. Interlocking rack; 26. First external mounting block; 27. First rotating column; 28. Fourth internal mounting groove; 29. ​​First bevel gear; 30. Second external mounting block; 31. Fifth internal mounting groove; 32. Second rotating column; 33. Second bevel gear; 34. Worm; 35. Worm wheel; 36. First pulley; 37. Extension block; 38. Interlocking gear; 39. Second pulley; 40. Transmission belt; 41. Limiting plate; 42. Third spring; 43. Clamping plate; 44. Rotating roller; 45. Interlocking slider; 46. Rotating handle; 47. Internal interlocking sliding groove; 48. Leveler. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figures 1 to 8The present invention provides a technical solution: a leveling device for land planning and surveying, comprising a measuring device body 1, two side stretching bars 2 and a rotating handle 46, wherein the two side stretching bars 2 are provided with inner stretching grooves 3 on one side close to each other, the corresponding two ends of the measuring device body 1 are respectively inserted into the inner stretching grooves 3, and the inner stretching grooves 3 are fixedly installed with limit slide blocks 4, and the corresponding two sides of the measuring device body 1 are provided with limit slide grooves 5, and the limit slide blocks 4 are inserted into the inner limit slide grooves 5 and are slidably connected thereto, and the measuring device body 1 is provided with a second inner mounting groove 14, and two measuring fan plates 15 are fixedly installed in the second inner mounting groove 14, and a scale bar 16 is printed on one side of the measuring fan plate 15, and the scale bar 16 can be used to effectively observe the relative inclination angle between the indicator block 18 and the measuring fan plate 15, so as to facilitate the measurement of the level difference, and a measuring swing arm 17 is rotatably connected between the two measuring fan plates 15, and the bottom of the measuring swing arm 17 An indicating block 18 is fixedly installed on the inside, and a side mounting groove 7 is provided on the side where the two side stretching strips 2 are away from each other. The insides of the two side mounting grooves 7 are rotatably connected with an inner rotating block 8, and the inside of the inner rotating block 8 is slidably connected with a measuring rod 9. The measuring rod 9 includes a measuring main rod 91, and the measuring main rod 91 is slidably connected to the inner rotating block 8. An inner telescopic insertion rod 94 is slidably connected inside the measuring main rod 91. The corresponding two sides of the inner wall of the measuring main rod 91 are provided with rod inner guide grooves 92, and the tops of the corresponding two sides of the inner telescopic insertion rod 94 are fixedly installed with guide sliders 93, which are slidably connected to the rod inner guide grooves 92, and an insertion cone 95 is fixedly installed on the bottom of the inner telescopic insertion rod 94. The measuring main rod 91 is used as a benchmark, so that the level difference can be conveniently measured using two points on the slope, a one-way limiting mechanism is provided inside the inner rotating block 8, an adjustment mechanism is provided on the top of the side stretching strip 2, and a leveler 48 is fixedly installed on one side of the measuring device body 1.

[0028] Among them, a third inner mounting groove 19 is opened inside the measuring device body 1 and on one side of the second inner mounting groove 14, and an inner sliding mounting block 20 is slidably connected inside the third inner mounting groove 19, and a magnet 22 is fixedly installed at the bottom of the inner sliding mounting block 20, and a second spring 21 is fixedly installed on the top of the inner wall of the third inner mounting groove 19, and the bottom of the second spring 21 is fixedly connected to the top of the inner sliding mounting block 20, and an outer sliding groove 23 is opened on one side of the measuring device body 1 close to the second inner mounting groove 14, and a push-pull switch 24 is slidably connected inside the outer sliding groove 23, and the inner sliding mounting block 20 is fixedly connected to the push-pull switch 24, and the measuring fan plate 15 and the indicating block 18 are made of iron, and the magnetic force of the magnet 22 can be used to locate the relative distance between the measuring fan plate 15 and the indicating block 18 to avoid errors caused by shaking during observation.

[0029] Among them, the one-way limiting mechanism includes a first inner mounting groove 10, the first inner mounting groove 10 is opened inside the inner rotating block 8, the internal rotation connection of the first inner mounting groove 10 is connected with a limiting paddle 11, a first spring 12 is fixedly installed on one side of the inner wall of the first inner mounting groove 10, one end of the first spring 12 is fixedly connected to one end of the limiting paddle 11, and a limiting adjustment slot 13 is opened on one side of the measuring main rod 91, and the limiting adjustment slot 13 cooperates with the limiting paddle 11. By utilizing the one-way movable limiting mechanism, the height of the measuring main rod 91 can be conveniently adjusted to avoid retraction when inserted into the soil, which is prone to errors.

[0030] The adjusting mechanism comprises a first outer mounting block 26, which is fixedly mounted on the top of the side stretching strip 2; a first rotating column 27 is rotatably connected inside the first outer mounting block 26; a fourth inner mounting groove 28 is provided inside the first outer mounting block 26; one end of the first rotating column 27 is inserted into the fourth inner mounting groove 28 and fixedly mounted with a first bevel gear 29; a second outer mounting block 30 is rotatably connected inside the first outer mounting block 26; a fifth inner mounting groove 31 is provided inside the second outer mounting block 30; a second rotating column 32 is rotatably connected inside the second outer mounting block 30; one end of the second rotating column 32 extends to the inside of the fifth inner mounting groove 31 and is fixedly mounted with a worm 34; an end of the second rotating column 32 away from the worm 34 passes through the second outer mounting block 30 and is fixedly mounted with a second bevel gear 33; the second bevel gear 33 meshes with the first bevel gear 29; a worm wheel 35 is rotatably connected inside the fifth inner mounting groove 31; the worm wheel 35 meshes with the worm 34; and corresponding sides of the worm wheel 35 are fixedly mounted with The first pulley 36 and the second outer mounting block 30 are fixedly mounted with an extension block 37 on one side, and a linkage gear 38 is rotatably connected inside the extension block 37. Second pulleys 39 are fixedly mounted on both sides of the linkage gear 38. A transmission belt 40 is arranged inside the second pulley 39, and the second pulley 39 is transmission-connected to the first pulley 36 through the transmission belt 40. A linkage rack 25 is fixedly mounted on one side of the measuring main rod 91, and the linkage gear 38 meshes with the linkage rack 25, so as to facilitate the simultaneous adjustment of the positions of the measuring main rods 91 on both sides relative to the inner rotating block 8, and the same structure on both sides can avoid the occurrence of errors. Internal linkage grooves 47 are provided at the corresponding two ends of the rotating handle 46, and a linkage slider 45 is fixedly mounted on one side of the first rotating column 27. The linkage slider 45 is inserted into the interior of the internal linkage groove 47 and is slidably connected thereto. The linkage slider 45 and the internal linkage groove 47 are mutually matched square structures, so that the two first rotating columns 27 can be driven to rotate at the same time by rotating the handle 46.

[0031] Among them, the corresponding two sides of the extension block 37 are fixedly installed with limit plates 41, the sides where the two limit plates 41 are close to each other are fixedly installed with third springs 42, and the sides where the two third springs 42 are close to each other are fixedly installed with clamping plates 43. The clamping plates 43 are internally rotatably connected with a plurality of rotating rollers 44, which can clamp the measuring main rod 91 from both sides, and the use of the horizontally arranged rotating rollers 44 will not affect the vertical rise and fall of the measuring main rod 91. The relative width between the two clamping plates 43 is the same as the width of the measuring main rod 91, which increases the stability of the clamping.

[0032] In summary, when using the leveling measuring device for land planning and surveying, first bend the end of the limit paddle 11 exposed on the outside upward, so that the limit paddle 11 rotates inside the first inner mounting groove 10, and the other end of the limit paddle 11 is disengaged from the inside of the limit adjustment slot 13, so as to facilitate the adjustment of its height. Before adjustment, first place the measuring device body 1 and the side stretching strip 2 in reverse, so that the measuring main rod 91 slides inside the inner rotating block 8, and then release the limit paddle 11 and insert it into the inside of the limit adjustment slot 13 again to fix the position of the measuring main rod 91. When the preparation work is completed, rotate the second outer mounting blocks 30 on both sides so that the second outer mounting blocks 30 are placed perpendicular to the first outer mounting blocks 26, and make The limit pieces 41 are located on both sides of the measuring main rod 91 and embrace it. After the rotation of the position of the second outer mounting block 30 is completed, the linkage gear 38 will mesh with the linkage rack 25, and the first bevel gear 29 will mesh with the second bevel gear 33. When the rotation of both sides is completed, the rotating handle 46 can be rotated, and the rotating handle 46 is used to drive the linkage slider 45 to rotate, thereby driving the first rotating column 27 and the first bevel gear 29 to rotate. At this time, since the first bevel gear 29 and the second bevel gear 33 are meshed, the second bevel gear 33 and the second rotating column 32 will be driven to rotate, and the rotation of the second rotating column 32 will drive the worm 34 to rotate, and synchronously drive the worm wheel 35 to rotate. While the worm wheel 35 rotates, the first pulley 36 and the second pulley 39 are used to rotate. The transmission of force by the transmission belt 40 can drive the linkage gear 38 to rotate, and utilize the meshing of the linkage gear 38 and the linkage rack 25 to drive the measuring main rod 91 to descend. Since both sides move synchronously at this time, the descending speed of the measuring main rod 91 can be the same, thereby ensuring the synchronization of adjustment. When the adjustment is completed, the second outer mounting block 30 can be rotated and lowered. When conducting the inspection, first select the two points where the level difference needs to be detected, and then completely insert the insertion cone 95 into the soil in a vertical state. According to the different relative distances between the two selected points, the two side stretching strips 2 can be stretched outward. According to the different altitudes and different usage scenarios, the inner telescopic insertion rod 94 can also be pulled out from the inside of the guide groove 92 in the rod to increase its height. To adapt to two points at different distances, due to gravity, the indicating block 18 will move vertically downward, and form a relative position movement with the inclined measuring device body 1 and the side stretching strip 2, and the position movement will be reflected on the scale bar 16 on one side of the measuring fan plate 15. When the test result is stable and the indicating block 18 no longer shakes, the push-pull switch 24 is pulled downward, so that the magnet 22 overcomes the elastic force of the second spring 21 and is adsorbed on the measuring fan plate 15. Since the measuring fan plate 15 is in contact with the magnetic material, it will also generate suction on the metal material, so that the indicating block 18 will be adsorbed at the position in contact with the measuring fan plate 15 at this time, thereby fixing the position of the test value for the convenience of the user to watch. After the data is copied, the push-pull switch 24 is moved upward in the opposite direction by manpower.Thus, the attraction between the magnet 22 and the measuring fan plate 15 is eliminated, and the position of the indicating block 18 can be moved again. In this way, the level difference between two adjacent points can be measured.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A leveling device for land planning and surveying, comprising a measuring device body (1), two side stretching bars (2) and a rotating handle (46), characterized in that: The two side stretching strips (2) are provided with inner stretching grooves (3) on the sides close to each other. The corresponding two ends of the measuring device body (1) are respectively inserted into the inner stretching grooves (3). A limit slide block (4) is fixedly installed inside the inner stretching groove (3). The corresponding two sides of the measuring device body (1) are provided with limit slide grooves (5). The limit slide block (4) is inserted into the limit slide groove (5) and is slidably connected thereto. A second inner mounting groove (14) is provided inside the measuring device body (1). Two measuring fan plates (15) are fixedly installed inside the second inner mounting groove (14). A measuring swing arm (17) is rotatably connected between the two measuring fan plates (15), an indicating block (18) is fixedly installed at the bottom of the measuring swing arm (17), a side mounting groove (7) is provided on the side away from each other of the two side stretching strips (2), an inner rotating block (8) is rotatably connected inside the two side mounting grooves (7), a measuring rod (9) is slidably connected inside the inner rotating block (8), a one-way limiting mechanism is arranged inside the inner rotating block (8), an adjusting mechanism is arranged on the top of the side stretching strip (2), and a leveler (48) is fixedly installed on one side of the measuring device body (1).

2. The leveling device for land planning and surveying according to claim 1 is characterized in that: A scale bar (16) is printed on one side of the measuring fan plate (15).

3. The leveling device for land planning and surveying according to claim 1 is characterized in that: A third inner mounting groove (19) is provided inside the measuring device body (1) and on one side of the second inner mounting groove (14); an inner sliding mounting block (20) is slidably connected inside the third inner mounting groove (19); a magnet (22) is fixedly installed at the bottom of the inner sliding mounting block (20); a second spring (21) is fixedly installed at the top of the inner wall of the third inner mounting groove (19); the bottom of the second spring (21) is fixedly connected to the top of the inner sliding mounting block (20); an outer sliding groove (23) is provided on one side of the measuring device body (1) close to the second inner mounting groove (14); a push-pull switch (24) is slidably connected inside the outer sliding groove (23); the inner sliding mounting block (20) is fixedly connected to the push-pull switch (24); the measuring fan plate (15) and the indicating block (18) are made of iron.

4. The leveling device for land planning and surveying according to claim 1 is characterized in that: The measuring rod (9) comprises a measuring main rod (91), the measuring main rod (91) is slidably connected to the inner rotating block (8), an inner telescopic insertion rod (94) is slidably connected inside the measuring main rod (91), inner rod guide grooves (92) are provided on the corresponding two sides of the inner wall of the measuring main rod (91), guide sliders (93) are fixedly installed on the tops of the corresponding two sides of the inner telescopic insertion rod (94), the guide sliders (93) are slidably connected to the inner rod guide grooves (92), and an insertion cone (95) is fixedly installed on the bottom of the inner telescopic insertion rod (94).

5. The leveling device for land planning and surveying according to claim 4 is characterized in that: The one-way limiting mechanism comprises a first inner mounting groove (10), the first inner mounting groove (10) is arranged inside the inner rotating block (8), the first inner mounting groove (10) is internally rotatably connected to a limiting paddle (11), a first spring (12) is fixedly installed on one side of the inner wall of the first inner mounting groove (10), one end of the first spring (12) is fixedly connected to one end of the limiting paddle (11), a limiting adjustment slot (13) is arranged on one side of the measuring main rod (91), and the limiting adjustment slot (13) cooperates with the limiting paddle (11).

6. The leveling device for land planning and surveying according to claim 4 is characterized in that: The adjustment mechanism comprises a first outer mounting block (26), the first outer mounting block (26) being fixedly mounted on the top of the side stretching strip (2), the first outer mounting block (26) being internally rotatably connected to a first rotating column (27), the first outer mounting block (26) being internally provided with a fourth internal mounting groove (28), one end of the first rotating column (27) being inserted into the fourth internal mounting groove (28) and being fixedly mounted with a first bevel gear (29), the first outer mounting block (26) being internally rotatably connected to a second outer mounting block (30), the second outer mounting block (30) being internally provided with a fifth internal mounting groove (31), the second outer mounting block (30) being internally rotatably connected to a second rotating column (32), one end of the second rotating column (32) extending to the inside of the fifth internal mounting groove (31) and being fixedly mounted with a worm (34), the end of the second rotating column (32) away from the worm (34) passing through the second outer mounting block (30) and fixedly mounted with a second bevel gear (33), the second bevel gear (33) meshing with the first bevel gear (29); a worm wheel (35) is rotatably connected inside the fifth inner mounting groove (31), the worm wheel (35) meshing with the worm (34); first pulleys (36) are fixedly mounted on the two corresponding sides of the worm wheel (35); an extension block (37) is fixedly mounted on one side of the second outer mounting block (30), the extension block (37) is rotatably connected inside with a linkage gear (38), the linkage gear (38) is fixedly mounted on the two corresponding sides of the linkage gear (38); a transmission belt (40) is arranged inside the second pulley (39), the second pulley (39) is transmission-connected with the first pulley (36) via the transmission belt (40); a linkage rack (25) is fixedly mounted on one side of the measuring main rod (91), the linkage gear (38) meshing with the linkage rack (25).

7. The leveling device for land planning and surveying according to claim 1 is characterized by: The rotating handle (46) has two corresponding ends provided with inner linkage grooves (47). A linkage slider (45) is fixedly mounted on one side of the first rotating column (27). The linkage slider (45) is inserted into the inner linkage groove (47) and is slidably connected thereto. The linkage slider (45) and the inner linkage groove (47) are mutually matched square structures.

8. The leveling device for land planning and surveying according to claim 1 is characterized by: The corresponding two sides of the extension block (37) are fixedly installed with limit plates (41), the sides of the two limit plates (41) close to each other are fixedly installed with third springs (42), the sides of the two third springs (42) close to each other are fixedly installed with clamping plates (43), and the clamping plates (43) are rotatably connected to a plurality of rotating rollers (44) inside.

9. The leveling device for land planning and surveying according to claim 8, characterized in that: The relative width between the two clamping pieces (43) is the same as the width of the measuring main rod (91).

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