Land surveying and mapping device suitable for complex terrain surveying and mapping

Abstract

The invention relates to the field of land surveying and mapping, in particular to a land surveying and mapping device suitable for complex terrain surveying and mapping, a surveying and mapping instrument is mounted at the upper end of a center rod, a supporting plate is fixedly mounted on the outer side of the center rod, and supporting legs are movably mounted on the supporting plate; the supporting leg comprises a supporting leg body and a telescopic section, the telescopic section is slidably mounted on the supporting leg body in the length direction of the supporting leg body, one end of the telescopic section extends out of the end, away from the supporting plate, of the supporting leg body, and an adjusting rod extending in the length direction of the supporting leg body is movably mounted on the supporting leg body. The telescopic section is provided with a locking mechanism used for tightly holding the adjusting rod. The first movable plate and the second movable plate are driven to be far away from each other by reversely rotating the adjusting screw rod, so that the first movable plate and the second movable plate drive the two half nuts to loosen the adjusting rod, and then the telescopic section can slide along the sliding rail to quickly adjust the length of the telescopic section extending out of the sliding rail; the telescopic sections at the lower ends of the supporting leg bodies can stably make contact with the ground.

Description

Technical Field

[0001] The present invention relates to the field of land surveying and mapping, and particularly to a land surveying and mapping device suitable for surveying and mapping in complex terrains. Background Art

[0002] Land surveying and mapping refers to the use of computer technology, optoelectronic technology, network communication technology, space science, and information science as the basis, with the global positioning system (GPS), remote sensing (RS), and geographic information system (GIS) as the technical core, to obtain graphic and position information reflecting the current situation of the ground by measuring the existing feature points and boundaries on the ground for the planning and design of engineering construction and administrative management.

[0003] In the prior art, the utility model patent with the application number CN202321448949.9 discloses a surveying and mapping device suitable for surveying and mapping in complex terrains, including a mounting base and a surveying and mapping device main body. The surface of the mounting base is rotatably connected with three support legs. The inner cavity of the support leg is threadedly connected with a threaded rod extending to the outside, and the threaded rod is rotatably connected to the top of the support foot. When the terrain is relatively uneven, the level of the mounting base is roughly adjusted by rotating the threaded rod.

[0004] However, when the surveying and mapping device is applied to complex terrains, the ground is uneven with large undulations. The above surveying and mapping device cannot achieve the rapid telescoping of the support legs by rotating the threaded rod, and it takes a relatively long time to level the surveying and mapping device, affecting work efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a land surveying and mapping device suitable for surveying and mapping in complex terrains, in which the support legs can be rapidly telescoped and adjusted to solve the defects mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A land surveying and mapping device suitable for surveying and mapping in complex terrains includes a central rod extending vertically. A surveying instrument is installed at the upper end of the central rod. A support plate is fixedly installed on the outside of the central rod. A plurality of support legs evenly spaced around the central rod are movably installed on the support plate; each support leg includes a support leg main body and a telescopic section. The upper end of the support leg main body is hinged to the support plate, and the plane in which the support leg main body rotates coincides with the central rod. The telescopic section is slidably installed on the support leg main body along the length direction of the support leg main body, and one end of the telescopic section extends out of the end of the support leg main body away from the support plate. An adjusting rod extending along the length direction of the support leg main body is movably installed on the support leg main body. A locking mechanism for clamping the adjusting rod is provided on the telescopic section.

[0008] As a further improvement, two relatively arranged slide rails are fixedly installed at one end of the support leg main body away from the support plate. The slide rails extend along the length direction of the support leg main body, and the telescopic section is slidably installed between the two slide rails; a sliding pin is fixedly installed on the telescopic section, and a strip-shaped hole matching the sliding pin is provided on the slide rail.

[0009] As a further improvement, the locking mechanism includes a first movable plate located on one side of the telescopic section. A sliding column perpendicular to the adjusting rod is fixedly installed on one side of the first movable plate. The sliding column is slidably installed on the telescopic section along its own axial direction. A positioning plate is fixedly installed at one end of the sliding column away from the first movable plate. A second movable plate is slidably installed on the sliding column between the positioning plate and the telescopic section. Locking components for clamping the adjusting rod are respectively provided on the sides of the first movable plate and the second movable plate close to each other; an adjusting screw rod parallel to the sliding column is rotatably installed on the second movable plate, and the adjusting screw rod is threadedly connected to the positioning plate.

[0010] As a further improvement, springs are respectively provided between the first movable plate and the telescopic section and between the second movable plate and the telescopic section.

[0011] As a further improvement, an external thread is provided on the outer side of the adjusting rod. One end of the adjusting rod is rotatably installed on the support leg main body, and the locking component is a half nut matching the external thread of the adjusting rod.

[0012] As a further improvement, a rectangular groove is provided on the telescopic section and penetrates along the length direction perpendicular to the adjusting rod. One end of the adjusting rod extends into the rectangular groove, and the two half nuts face the adjusting rod in the rectangular groove.

[0013] As a further improvement, a vertically extending sliding rod is fixedly installed at the lower end of the central rod. A sliding sleeve is slidably installed on the sliding rod. A connecting rod is hinged between the sliding sleeve and the support leg main body. A first locking bolt for pressing against the outer wall of the sliding rod is screwed on the sliding sleeve.

[0014] As a further improvement, the central rod is in the shape of a hollow tube. An activity tube is inserted into the upper end of the central rod. A mounting seat is fixedly installed at the upper end of the activity tube, and the surveying instrument is installed on the mounting seat. A second locking bolt for pressing against the outer wall of the activity tube is screwed on the central rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This application facilitates the reverse rotation of the adjusting screw to drive the first movable plate and the second movable plate away from each other. As a result, the first movable plate and the second movable plate drive the two half-nuts to loosen the adjusting rod, and then the telescopic section can slide along the slide rail to quickly adjust the length of the telescopic section extending outside the slide rail, enabling the telescopic sections at the lower ends of multiple support leg bodies to stably contact the ground. This facilitates the efficient adjustment of the overall length of the support legs, thereby improving work efficiency.

[0017] 2. This application facilitates the forward rotation of the adjusting screw to drive the first movable plate and the second movable plate closer to each other. Thus, the first movable plate and the second movable plate drive the two half-nuts to tightly hold the adjusting rod. Then, by rotating the adjusting rod, the adjusting rod acts on the two half-nuts and drives the telescopic section to slowly slide along the slide rail, realizing fine adjustment of the length of the telescopic section extending outside the slide rail, so as to roughly level the surveying instrument. At the same time, it has two adjustment functions, and the adjustment is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is a schematic structural diagram of the bottom of the support plate of the present invention;

[0021] Figure 3 is a schematic structural diagram of the support leg of the present invention;

[0022] Figure 4 is a schematic structural diagram of the locking mechanism of the present invention;

[0023] Figure 5 is a sectional view of the locking mechanism of the present invention.

[0024] In the figure: 1 - central rod; 2 - surveying instrument; 3 - support plate; 4 - support leg; 5 - support leg body; 6 - telescopic section; 7 - slide rail; 8 - sliding pin; 9 - strip hole; 10 - adjusting rod; 11 - rectangular groove; 12 - first movable plate; 13 - sliding column; 14 - positioning plate; 15 - second movable plate; 16 - adjusting screw; 17 - spring; 18 - half-nut; 19 - slide bar; 20 - sliding sleeve; 21 - connecting rod; 22 - first locking bolt; 23 - movable tube; 24 - mounting seat; 25 - second locking bolt; 26 - hinge seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] As Figures 1 to 5 shown, a land surveying device applicable to complex terrain surveying includes a central rod 1 extending vertically. A surveying instrument 2 is installed at the upper end of the central rod 1. A support plate 3 is welded to the outside of the central rod 1. A plurality of support legs 4 evenly spaced around the central rod 1 are movably installed on the support plate 3. The support legs 4 include a support leg main body 5 and a telescopic section 6. A hinge seat 26 corresponding to the support leg main body 5 one by one is provided at the bottom of the support plate 3. The upper end of the support leg main body 5 is hinged to the corresponding hinge seat 26. The plane in which the support leg main body 5 rotates coincides with the central rod 1. When in use, the support legs 4 are rotated outward to the side away from the central rod 1 to open the plurality of support legs 4, so as to provide a stable support effect through the plurality of support legs 4; after use, the support legs 4 are rotated inward to the side close to the central rod 1 to close the plurality of support legs 4, thereby reducing the occupied space and facilitating carrying and transportation.

[0027] The telescopic section 6 is slidably installed on the support leg main body 5 along the length direction of the support leg main body 5, and one end of the telescopic section 6 extends out of the end of the support leg main body 5 away from the support plate 3. As Figure 2 and Figure 3 shown, two opposite slide rails 7 are welded to the end of the support leg main body 5 away from the support plate 3. The cross sections of the two slide rails 7 are C-shaped with the openings facing each other. The slide rails 7 extend along the length direction of the support leg main body 5. The telescopic section 6 is slidably installed between the two slide rails 7, and one end of the telescopic section 6 extends out of the outside of the slide rails 7. The two slide rails 7 provide support and guiding functions for the telescopic section 6. When the ground is uneven, the telescopic section 6 can be slid along the slide rails 7 to adjust the length of the telescopic section 6 extending out of the outside of the slide rails 7, so that the telescopic sections 6 at the lower ends of the plurality of support leg main bodies 5 can all stably contact the ground, thereby providing a stable support effect. In addition, in order to prevent the telescopic section 6 from completely falling off the slide rails 7, two opposite sliding pins 8 are threadedly connected to the telescopic section 6. The sliding pins 8 are perpendicular to the length direction of the slide rails 7. Bar-shaped holes 9 matching the sliding pins 8 are respectively provided on the two slide rails 7. The length direction of the bar-shaped holes 9 extends along the length direction of the slide rails 7. The sliding pins 8 are slidably installed in the corresponding bar-shaped holes 9.

[0028] An adjusting rod 10 extending along its length direction is movably installed on the support leg main body 5. In this embodiment, an external thread is provided on the outer side of the adjusting rod 10. The upper end of the adjusting rod 10 is rotatably installed at the lower end of the support leg main body 5 through a bearing. The adjusting rod 10 is located between the two slide rails 7. A rectangular groove 11 is provided on the telescopic section 6 and penetrates along a direction perpendicular to the length direction of the adjusting rod 10. A through hole communicating with the rectangular groove 11 downward is provided at the top of the telescopic section 6. The lower end of the adjusting rod 10 passes through the through hole and extends into the rectangular groove 11, and the adjusting rod 10 does not contact the inner wall of the through hole.

[0029] A locking mechanism for clamping the adjusting rod 10 is provided on the telescopic section 6, as Figure 4 and Figure 5 shown. The locking mechanism includes a first movable plate 12 located on one side of the telescopic section 6. A sliding column 13 perpendicular to the adjusting rod 10 is fixedly installed on one side of the first movable plate 12 through screws. Four sliding columns 13 are arranged in a rectangular array. The sliding columns 13 are slidably installed on the telescopic section 6 along their own axial directions. A guiding hole for the sliding columns 13 to pass through is provided on the telescopic section 6 located between the two slide rails 7. One end of the four sliding columns 13 away from the first movable plate 12 is fixedly installed with a positioning plate 14 through screws. The first movable plate 12 and the positioning plate 14 are respectively located on the opposite sides of the telescopic section 6. A second movable plate 15 is slidably installed on the four sliding columns 13 located between the positioning plate 14 and the telescopic section 6. Locking components for clamping the adjusting rod 10 are respectively provided on the sides of the first movable plate 12 and the second movable plate 15 close to each other, and the locking components are opposite to the rectangular groove 11. A regulating screw 16 parallel to the sliding column 13 is rotatably installed on the side of the second movable plate 15 away from the first movable plate 12 through a bearing. The regulating screw 16 is threadedly connected to the positioning plate 14, and a threaded hole matching the regulating screw 16 is provided on the positioning plate 14. Specifically, rotating the regulating screw 16 forward drives the second movable plate 15 away from the positioning plate 14, so that the first movable plate 12 and the second movable plate 15 approach each other, and the first movable plate 12 and the second movable plate 15 drive the two locking components to clamp the adjusting rod 10; conversely, rotating the regulating screw 16 backward drives the second movable plate 15 close to the positioning plate 14, so that the first movable plate 12 and the second movable plate 15 move away from each other, and the first movable plate 12 and the second movable plate 15 drive the two locking components to loosen the adjusting rod 10.

[0030] Springs 17 are respectively sleeved on the sliding columns 13 located between the first movable plate 12 and the telescopic section 6 and on the sliding columns 13 located between the second movable plate 15 and the telescopic section 6. When the two locking components loosen the adjusting rod 10, the springs 17 can push the two locking components away from the adjusting rod 10 to avoid friction between the locking components and the adjusting rod 10 when the telescopic section 6 slides along the slide rail 7.

[0031] In this embodiment, the locking member is a half nut 18 that matches the external thread of the adjusting rod 10. The two half nuts 18 are respectively welded to the first movable plate 12 and the second movable plate 15, and the two half nuts 18 face the adjusting rod 10 in the rectangular groove 11.

[0032] During specific use, first, reverse-rotate the adjusting screw 16 to drive the first movable plate 12 and the second movable plate 15 to move away from each other. Thus, the first movable plate 12 and the second movable plate 15 drive the two half nuts 18 to loosen the adjusting rod 10. Then, the telescopic section 6 can be slid along the slide rail 7 to quickly adjust the length of the telescopic section 6 extending outside the slide rail 7, so that the telescopic sections 6 at the lower ends of the plurality of support leg bodies 5 can all stably contact the ground. After the above adjustment is completed, then forward-rotate the adjusting screw 16 to drive the first movable plate 12 and the second movable plate 15 to move closer to each other. Thus, the first movable plate 12 and the second movable plate 15 drive the two half nuts 18 to tightly hold the adjusting rod 10, preventing the telescopic section 6 from sliding randomly along the slide rail 7. At the same time, the length of the telescopic section 6 extending outside the slide rail 7 can also be finely adjusted by rotating the adjusting rod 10. The adjusting rod 10 acts on the two half nuts 18 and drives the telescopic section 6 to slowly slide along the slide rail 7, so as to roughly level the surveying instrument 2. In addition, in order to facilitate the rotation of the adjusting rod 10, a knob is fixedly installed on the adjusting rod 10 above the telescopic section 6.

[0033] As Figure 1 and Figure 2 shown, a vertically extending slide rod 19 is welded to the lower end of the central rod 1. A slide sleeve 20 is slidably installed on the slide rod 19. A stop block for preventing the slide sleeve 20 from falling off is fixedly installed at the lower end of the slide rod 19 by a bolt. Link rods 21 are respectively hinged between the slide sleeve 20 and each support leg body 5. A first locking bolt 22 for tightly pressing against the outer wall of the slide rod 19 is screwed onto the slide sleeve 20. When the support leg 4 rotates inward or outward, it will drive the slide sleeve 20 to slide up and down along the slide rod 19. By sliding the slide sleeve 20 to different positions on the slide rod 19 and tightening the first locking bolt 22, the first locking bolt 22 tightly presses against the outer wall of the slide rod 19 and locks the slide sleeve 20, so that the opening angle of the support leg 4 can be adjusted.

[0034] The central rod 1 is a hollow tube. An activity tube 23 is inserted into the upper end of the central rod 1. A mounting seat 24 is fixedly installed at the upper end of the activity tube 23 by a bolt. The surveying instrument 2 is installed on the mounting seat 24. A leveling mechanism is also provided between the surveying instrument 2 and the mounting seat 24. A second locking bolt 25 for tightly pressing against the outer wall of the activity tube 23 is screwed onto the central rod 1. After loosening the second locking bolt 25, the activity tube 23 can be slid up and down along the central rod 1, so as to adjust the height of the surveying instrument 2. After the surveying instrument 2 is adjusted to the appropriate height, tighten the second locking bolt 25 to keep the height of the surveying instrument 2 fixed.

[0035] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A land surveying device applicable to complex terrain surveying, characterized in that: It includes a vertically extending central rod, a surveying instrument is installed at the upper end of the central rod, a support plate is fixedly installed on the outer side of the central rod, and a plurality of support legs are movably installed on the support plate and are evenly spaced around the central rod; the support legs include a support leg main body and a telescopic section. The upper end of the support leg main body is hinged on the support plate, and the plane where the support leg main body rotates coincides with the central rod. The telescopic section is slidably installed on the support leg main body along the length direction of the support leg main body, and one end of the telescopic section extends out of the end of the support leg main body away from the support plate. An adjusting rod extending along the length direction of the support leg main body is movably installed on the support leg main body, and a locking mechanism for clamping the adjusting rod is provided on the telescopic section.

2. The land surveying device applicable to complex terrain surveying as described in claim 1, characterized in that: Two opposite slide rails are fixedly installed at the end of the support leg main body away from the support plate, and the slide rails extend along the length direction of the support leg main body. The telescopic section is slidably installed between the two slide rails; a sliding pin is fixedly installed on the telescopic section, and a strip-shaped hole matching the sliding pin is provided on the slide rail.

3. The land surveying device applicable to complex terrain surveying according to claim 1, wherein: The locking mechanism includes a first movable plate located on one side of the telescopic section. A sliding column perpendicular to the adjusting rod is fixedly installed on one side of the first movable plate. The sliding column is slidably installed on the telescopic section along its own axial direction. A positioning plate is fixedly installed at the end of the sliding column away from the first movable plate. A second movable plate is slidably installed on the sliding column between the positioning plate and the telescopic section. Locking components for clamping the adjusting rod are respectively provided on the sides of the first movable plate and the second movable plate close to each other; an adjusting screw rod parallel to the sliding column is rotatably installed on the second movable plate, and the adjusting screw rod is threadedly connected to the positioning plate.

4. A land surveying device applicable to complex terrain surveying according to claim 3, characterized in that: Springs are respectively provided between the first movable plate and the telescopic section and between the second movable plate and the telescopic section.

5. The land surveying device applicable to complex terrain surveying according to claim 3, characterized in that: External threads are provided on the outer side of the adjusting rod. One end of the adjusting rod is rotatably installed on the support leg main body, and the locking component is a half nut matching the external threads of the adjusting rod.

6. The land surveying device applicable to complex terrain surveying according to claim 5, characterized in that: A rectangular groove is provided on the telescopic section and runs through in a direction perpendicular to the length direction of the adjusting rod. One end of the adjusting rod extends into the rectangular groove, and the two half nuts are opposite to the adjusting rod in the rectangular groove.

7. A land surveying device applicable to complex terrain surveying as claimed in claim 1, characterized in that: A vertically extending sliding rod is fixedly installed at the lower end of the central rod. A sliding sleeve is slidably installed on the sliding rod. A connecting rod is hinged between the sliding sleeve and the support leg main body. A first locking bolt for pressing against the outer wall of the sliding rod is screwed on the sliding sleeve.

8. The land surveying device applicable to complex terrain surveying according to claim 1, wherein: The central rod is in the shape of a hollow tube. An activity tube is inserted into the upper end of the central rod. A mounting seat is fixedly installed at the upper end of the activity tube, and the surveying instrument is installed on the mounting seat. A second locking bolt for pressing against the outer wall of the activity tube is screwed on the central rod.

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