Folding topographic surveying and mapping scale

Abstract

The utility model relates to the technical field of surveying and mapping, in particular to a folding topographic surveying and mapping scale which comprises a first surveying and mapping scale structure and a second surveying and mapping scale structure, an elastic positioning component is installed at one end of the front side of the first surveying and mapping scale structure, the first surveying and mapping scale structure comprises a first plate body, and first scales are arranged on the front side of the first plate body; a rotating hole is formed in one end of the first plate body, and a sliding-in opening is formed in the position, close to the rotating hole, of one end of the first plate body. According to the utility model, the arc-shaped rotating plate slides into the rotating hole through the sliding inlet, so that the first surveying and mapping scale structure and the second surveying and mapping scale structure can be quickly disassembled and assembled, the convenience of assembly is improved, and the unfolding angles of the first surveying and mapping scale structure and the second surveying and mapping scale structure are elastically positioned through the elastic positioning component; and the angle adjustment of the first surveying and mapping scale structure and the second surveying and mapping scale structure is not influenced, so that the stability of the surveying and mapping process is facilitated while flexible measurement is ensured.

Description

Technical Field

[0001] This utility model relates to the field of surveying and mapping technology, specifically a foldable topographic surveying ruler. Background Technology

[0002] Topographic surveying rulers are key tools used in topographic surveying for marking, positioning, and auxiliary data measurement. They are used to accurately measure the elevation and distance of ground points or to obtain topographic data in conjunction with instruments. Their design must meet the characteristics of high accuracy, strong stability, and ease of carrying and operation. Their design, usage methods, and accuracy directly affect the quality of surveying results. However, most existing surveying rulers are either one-piece or telescopic rods. One-piece surveying rulers do not have the ability to be folded, making them inconvenient to carry.

[0003] Chinese patent discloses a portable folding surveying ruler (authorization announcement number CN214688762U). This patented technology uses a first hinge and a second hinge to connect the left, center, and right surveying rulers respectively, facilitating their connection. Simultaneously, the base plate, baffle, limiting plate, and pin facilitate the fixed storage and positioning of the left, center, and right surveying rulers, making them easy to move. However, the folding joint of the aforementioned folding surveying ruler is fixedly connected by a connector, and the assembly of the rulers requires tools, which is detrimental to the processing efficiency of the folding surveying ruler. Furthermore, the flexible rotation of the hinge joint after unfolding is unfavorable to the stability of the surveying process. Therefore, those skilled in the art have provided a folding topographic surveying ruler to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a foldable topographic mapping ruler to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A foldable topographic surveying ruler includes a first surveying ruler structure and a second surveying ruler structure. The second surveying ruler structure is located behind the first surveying ruler structure. An elastic positioning component is installed at one end of the front side of the first surveying ruler structure. The first surveying ruler structure includes a first plate with a first scale on its front side and a rotating hole at one end. A sliding entrance is located near the rotating hole at one end of the first plate. The second surveying ruler structure includes a second plate with a second scale on its front side and a sliding groove at one end. A slider is installed inside the sliding groove, and an arc-shaped rotating plate is installed at the front side of the slider. An arc-shaped limiting plate is installed at the front side of the arc-shaped rotating plate. A tension spring is installed inside the sliding groove at the outer side of the slider.

[0007] As a further embodiment of this utility model: a sliding hole is provided on the front side of the first plate near the rotating hole, and a positioning groove is provided on the front side of the second plate near the sliding groove. The elastic positioning component includes a mounting frame, a sliding rod is provided on the rear side of the mounting frame, a pressure ring is provided on the outer side of the sliding rod, and a support spring is installed on the outer side of the sliding rod at the corresponding side position of the mounting frame and the pressure ring.

[0008] As a further embodiment of this utility model: the arc-shaped rotating plate rotates to the internal position of the rotating hole, the rear side of the arc-shaped limiting plate slides to the front position of the first plate, and the rear end of the elastic positioning member passes through the first plate and is located at the front position of the second plate.

[0009] As a further embodiment of this utility model: the slider slides inside the groove, the arc-shaped rotating plate slides to the front side of the second plate via the slider, the outer end of the tension spring is fixed to the outer end of the groove, and the inner end of the tension spring is fixed to the outer side of the slider.

[0010] As a further embodiment of this utility model: the rear end of the mounting bracket is fixed to the front side of the first plate, the pressure ring slides to the outer side of the slide rod, the pressure ring is located at the front side of the first plate, the rear end of the slide rod slides to the inside of the slide hole, the rear end of the slide rod is located at the temporal part of the positioning groove, and the front end of the slide rod slides to the inside of the mounting bracket.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The foldable topographic surveying ruler of this utility model slides into the interior of the rotating hole through the sliding entrance via an arc-shaped rotating plate, thereby completing the quick assembly and disassembly of the first surveying ruler structure and the second surveying ruler structure, improving the convenience of assembly, and requiring no tools for installation, which is beneficial to the processing efficiency of the foldable surveying ruler.

[0013] 2. The unfolding angle of the first and second surveying scale structures is flexibly positioned by the elastic positioning component without affecting the angle adjustment of the first and second surveying scale structures, ensuring flexible measurement while facilitating the stability of the surveying process. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a foldable topographic mapping scale;

[0015] Figure 2 A schematic diagram of the structure of the first surveying scale in a foldable topographic surveying scale;

[0016] Figure 3 A schematic diagram of the structure of the second surveying scale in a foldable topographic surveying scale;

[0017] Figure 4 for Figure 3 A schematic diagram of the structure of part A;

[0018] Figure 5 This is a schematic diagram of the elastic positioning component in a foldable topographic mapping scale.

[0019] In the diagram: 1. First surveying scale structure; 2. Second surveying scale structure; 3. Elastic positioning component; 4. First plate; 5. First scale; 6. Rotary hole; 7. Slide entrance; 8. Second plate; 9. Second scale; 10. Slide groove; 11. Slider; 12. Arc-shaped rotating plate; 13. Arc-shaped limiting plate; 14. Tension spring; 15. Slide hole; 16. Positioning groove; 17. Mounting bracket; 18. Slide rod; 19. Pressure ring; 20. Support spring. Detailed Implementation

[0020] Please see Figures 1-5In this embodiment of the utility model, the foldable topographic surveying ruler includes a first surveying ruler structure 1 and a second surveying ruler structure 2. The second surveying ruler structure 2 is located at the rear side of the first surveying ruler structure 1. An elastic positioning member 3 is installed at one end of the front side of the first surveying ruler structure 1. The first surveying ruler structure 1 includes a first plate 4, with a first scale 5 on the front side of the first plate 4. A rotating hole 6 is opened at one end of the first plate 4, and a sliding entrance 7 is provided at one end of the first plate 4 near the rotating hole 6. The second surveying ruler structure 2 includes a second plate 8. A second scale 9 is provided on the front side. A groove 10 is provided at one end of the front side of the second plate 8. A slider 11 is provided inside the groove 10. An arc-shaped rotating plate 12 is provided in front of the slider 11. An arc-shaped limiting plate 13 is provided in front of the arc-shaped rotating plate 12. A tension spring 14 is installed inside the groove 10 at the outer position of the slider 11. The arc-shaped rotating plate 12 rotates at the inner position of the rotating hole 6. The rear side of the arc-shaped limiting plate 13 slides at the front position of the first plate 4. The rear end of the elastic positioning member 3 passes through the first plate 4 and is located at the front position of the second plate 8. The slider 11 slides in the groove 10. Inside the first plate 8, the arc-shaped rotating plate 12 slides on the front side of the second plate 8 via the slider 11. The outer end of the tension spring 14 is fixed to the outer end of the slide groove 10, and the inner end of the tension spring 14 is fixed to the outer side of the slider 11. The working principle of this utility model is as follows: First, press the arc-shaped limiting plate 13, the slider 11 slides inside the slide groove 10, the tension spring 14 unfolds, and the arc-shaped rotating plate 12 slides into the rotating hole 6 through the sliding entrance 7. The arc-shaped limiting plate 13 is located on the front side of the first plate 4. Release the arc-shaped limiting plate 13, the tension spring 14 retracts, and pulls the slider 11 in the slide groove 10. The slider 11 slides internally, causing the arc-shaped rotating plate 12 to slide on the front side of the second plate 8. The arc-shaped rotating plate 12 is engaged with the inside of the rotating hole 6, completing the assembly of the first surveying scale structure 1 and the second surveying scale structure 2. Then, it is put into use. During use, the arc-shaped rotating plate 12 rotates inside the rotating hole 6, unfolding the first surveying scale structure 1 and the second surveying scale structure 2. The elastic positioning component 3 temporarily positions the angle of the first surveying scale structure 1 and the second surveying scale structure 2. The surveying operation is carried out through the first surveying scale structure 1 and the second surveying scale structure 2. The tension of the tension spring 14 is 2 to 3.5 N.

[0021] exist Figure 2 , 3In sections 4 and 5: A sliding hole 15 is provided on the front side of the first plate 4 near the rotating hole 6; a positioning groove 16 is provided on the front side of the second plate 8 near the sliding groove 10; the elastic positioning component 3 includes a mounting bracket 17; a sliding rod 18 is provided on the rear side of the mounting bracket 17; a pressure ring 19 is provided on the outer side of the sliding rod 18; a support spring 20 is installed on the outer side of the sliding rod 18 at the corresponding side of the mounting bracket 17 and the pressure ring 19; the rear end of the mounting bracket 17 is fixed to the front side of the first plate 4; the pressure ring 19 slides on the outer side of the sliding rod 18; the rear end of the sliding rod 18 slides inside the sliding hole 15. The rear end of the slide rod 18 is located at the temporal position of the positioning groove 16, and the front end of the slide rod 18 slides inside the mounting bracket 17. During use, the arc-shaped rotating plate 12 rotates inside the rotating hole 6 to unfold the first surveying scale structure 1 and the second surveying scale structure 2. The support spring 20 extends and retracts, the rear end of the slide rod 18 slides inside the sliding hole 15, the pressure ring 19 slides outside the slide rod 18 to limit the support spring 20, the front end of the slide rod 18 slides inside the mounting bracket 17, and the rear end of the slide rod 18 is inserted into the positioning groove 16 to complete the temporary positioning of the angle of the first surveying scale structure 1 and the second surveying scale structure 2. The elastic force of the support spring 20 is 1.5~3N.

[0022] The working principle of this utility model is as follows: First, pressing the arc-shaped limiting plate 13 causes the slider 11 to slide inside the slide groove 10, the tension spring 14 unfolds, and the arc-shaped rotating plate 12 slides into the rotating hole 6 through the sliding entrance 7. The arc-shaped limiting plate 13 is located on the front side of the first plate 4. Releasing the arc-shaped limiting plate 13 causes the tension spring 14 to retract, pulling the slider 11 to slide inside the slide groove 10. The slider 11 drives the arc-shaped rotating plate 12 to slide on the front side of the second plate 8. The arc-shaped rotating plate 12 is engaged with the inner side of the rotating hole 6, completing the assembly of the first surveying scale structure 1 and the second surveying scale structure 2. Then... When in use, the arc-shaped rotating plate 12 rotates inside the rotating hole 6, unfolding the first surveying scale structure 1 and the second surveying scale structure 2. The support spring 20 extends and retracts, the rear end of the slide rod 18 slides inside the sliding hole 15, the pressure ring 19 slides outside the slide rod 18 to limit the support spring 20, the front end of the slide rod 18 slides inside the mounting bracket 17, and the rear end of the slide rod 18 inserts into the positioning groove 16, completing the temporary positioning of the angle of the first surveying scale structure 1 and the second surveying scale structure 2. Surveying operations are then performed through the first surveying scale structure 1 and the second surveying scale structure 2.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A foldable topographic surveying scale, comprising a first surveying scale structure (1) and a second surveying scale structure (2), wherein the second surveying scale structure (2) is located at the rear side of the first surveying scale structure (1), characterized in that, An elastic positioning component (3) is installed at one end of the front side of the first surveying scale structure (1). The first surveying scale structure (1) includes a first plate (4). A first scale (5) is provided on the front side of the first plate (4). A rotating hole (6) is opened at one end of the first plate (4). A sliding entrance (7) is provided at one end of the first plate (4) near the rotating hole (6). The second surveying scale structure (2) includes a second plate (8). A second scale (9) is provided on the front side of the second plate (8). A sliding groove (10) is provided at one end of the front side of the second plate (8). A slider (11) is provided inside the sliding groove (10). An arc-shaped rotating plate (12) is provided on the front side of the slider (11). An arc-shaped limiting plate (13) is provided on the front side of the arc-shaped rotating plate (12). A tension spring (14) is installed inside the sliding groove (10) at the outer side of the slider (11).

2. The folding topographic surveying scale according to claim 1, characterized in that, A sliding hole (15) is provided on the front side of the first plate (4) near the rotating hole (6), and a positioning groove (16) is provided on the front side of the second plate (8) near the sliding groove (10). The elastic positioning component (3) includes a mounting bracket (17), a sliding rod (18) is provided on the rear side of the mounting bracket (17), a pressure ring (19) is provided on the outer side of the sliding rod (18), and a support spring (20) is installed on the outer side of the sliding rod (18) at the corresponding side position of the mounting bracket (17) and the pressure ring (19).

3. The folding topographic surveying scale according to claim 1, characterized in that, The arc-shaped rotating plate (12) rotates to the internal position of the rotating hole (6), the rear side of the arc-shaped limiting plate (13) slides to the front side position of the first plate (4), and the rear end of the elastic positioning member (3) passes through the first plate (4) and is located at the front side position of the second plate (8).

4. The folding topographic surveying scale according to claim 1, characterized in that, The slider (11) slides inside the groove (10), the arc-shaped rotating plate (12) slides on the front side of the second plate (8) via the slider (11), the outer end of the tension spring (14) is fixed at the outer end of the groove (10), and the inner end of the tension spring (14) is fixed at the outer side of the slider (11).

5. The foldable topographic surveying scale according to claim 2, characterized in that, The rear end of the mounting bracket (17) is fixed to the front side of the first plate (4), the pressure ring (19) slides on the outside of the slide rod (18), the pressure ring (19) is located on the front side of the first plate (4), the rear end of the slide rod (18) slides inside the slide hole (15), the rear end of the slide rod (18) is located at the temporal part of the positioning groove (16), and the front end of the slide rod (18) slides inside the mounting bracket (17).

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