A portable geographic information surveying instrument

Abstract

The present application relates to geographic information surveying and mapping technical field, specifically to a kind of portable geographic information surveying and mapping instrument, including surveying and mapping instrument body and three-legged support installed in the lower side of surveying and mapping instrument body, three-legged support also includes support and support plate, the number of support plate is three, three support plates are arranged in triangle;Extension plate, the outer side wall of each support plate is equipped with sliding slot, and extension plate is slidably installed in sliding slot, and clamping component is arranged between extension plate and the inner wall of sliding slot;Strap is further provided in placing cavity by reel;Buckle assembly and rolling mechanism, by shortening the design length of existing three-legged support upper support leg, the overall volume of original surveying and mapping instrument body is reduced, and the volume is not additionally increased, so that three support plates can constantly change the use position, realize surveying and mapping instrument body, it can also be pushed and can be stably supported for the purpose of use, design structure is ingenious change, easy to operate and learn, reach the purpose of portable use.

Description

Technical Field

[0001] This invention relates to the field of geographic information mapping technology, and specifically to a portable geographic information mapping instrument. Background Technology

[0002] Surveying has wide applications in economic and national defense construction. In urban and rural construction planning, land resources and environmental protection, surveying instruments are needed to measure various geographic information and maps. Because this surveying method requires on-site surveying, surveyors often need to carry the geographic information surveying instrument to the surveying site. Currently, the surveying instrument on the market mainly consists of two parts: the instrument itself and the tripod. When carrying it, it needs to be disassembled. Although transportation is relatively convenient now, and vehicles can often be used for transport, vehicles are not useful when surveying needs to enter narrow areas or areas where vehicles cannot pass. In such cases, surveyors need to carry the instrument and tripod on foot to the surveying location. The instrument is carried in a box, while the tripod is mainly carried by people carrying it on their shoulders or in their arms. This method of carrying is labor-intensive and very inconvenient.

[0003] Therefore, people began to study portable surveying instruments to make them easier for surveyors to carry. For example, Chinese Patent Publication No. CN209943917U discloses a portable geographic information surveying instrument, which mainly transforms the original tripod into a three-section structure by setting a support rod. This structure can be folded freely to achieve portability, reducing the volume occupied by the original tripod. However, it still requires carrying. Another example is Chinese Patent Publication No. CN215725942U, which also discloses a portable geographic information surveying instrument. It houses the instrument in a box and designs some detachable structures to facilitate the disassembly and assembly of the box and the tripod. The purpose is to facilitate the disassembly of the box and the tripod while protecting the instrument.

[0004] While the aforementioned prior art has improved the portability of the surveying instrument to some extent, it has not solved the problem of how to carry it well. Adding a case undoubtedly increases the volume and makes it more inconvenient to transport. Therefore, this application proposes a portable geographic information surveying instrument by combining the usage requirements of the surveying instrument and the shortcomings of the existing disclosed technology. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a portable geographic information mapping instrument that can be deformed to change its carrying form and improve portability, thereby solving the problems of existing technologies mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A portable geographic information mapping instrument includes a mapping instrument body and a tripod mounted on the lower side of the mapping instrument body, wherein the tripod further includes:

[0010] A support is installed between the surveying instrument body and the tripod to support the surveying instrument body, and the surveying instrument body and the support are rotatably connected.

[0011] The support plate consists of three plates arranged in a triangle. The top of each support plate is rotatably mounted on the underside of the support via a quick-release structure. An adjustment assembly for adjusting the opening and closing angle of the three support plates is also provided between the three support plates.

[0012] The extension plate has a groove on the outer side wall of each of the support plates, and the extension plate is slidably installed inside the groove. A locking assembly is provided between the extension plate and the inner wall of the groove, and the upper area of ​​the extension plate is rotatably connected to the upper area of ​​the groove via a detachable rotating shaft.

[0013] The support plate has a placement groove on the upper side of the outer wall of the extension plate, and the support plate is rotatably installed inside the placement groove. The maximum rotation angle between the support plate and the extension plate is 90 degrees. The inner wall of the support plate has a groove, and the lower side of the support plate has a placement cavity that communicates with the outside. The placement cavity also has a carrying strap installed inside via a roller.

[0014] The buckle assembly includes a female buckle and a male buckle. The female buckle is installed at one end of the shoulder strap, and the male buckle is installed on the lower side of the outer wall of the extension plate for fastening the extended shoulder strap.

[0015] The positioning blocks are provided with two symmetrical positioning blocks installed on the upper and lower parts of the inner wall of each support plate, and each positioning block is provided with a positioning through hole. The support has three sets of insertion holes on one side suitable for inserting the two positioning blocks on each support plate. A locking bolt passes through the upper side wall of the insertion hole, and a threaded hole suitable for threaded connection of the locking bolt is provided on the lower side wall of the insertion hole.

[0016] A rolling mechanism, comprising balls and rollers, wherein the lower end of the extension plate is provided with a pointed structure and the balls are rotatably installed inside the pointed structure, and the lower ends of the support plate are provided with rotating grooves on both sides, and each rotating groove is equipped with a roller.

[0017] The inner side of the extension plate is also equipped with a positioning anchor rod, which is used to lock the position of the extension plate in contact with the ground.

[0018] Specifically, the quick-release structure includes:

[0019] The rotating rod has three rotating rods, and each rotating rod is fixedly installed at the top of each support plate. The outer walls of the rotating rods are symmetrically provided with limiting rings, and the outer side of the limiting rings is also provided with a sleeve. A spring is connected between the sleeve and the limiting rings. The spring and the sleeve are both sleeved on the outside of the rotating rod.

[0020] The bend has an angle of 60 degrees and there are three bends. The three bends are connected to three rotating rods in pairs and form an equilateral triangle. Each bend is fixedly connected to the bottom end of the support through a connecting rod. A limit ring is also fixedly connected to the outer wall of the bend to abut against the sleeve.

[0021] The circular groove is provided at both ends of each of the rotating rods, and an adjustment cavity is provided on the inner side of the circular groove. A limit block is slidably arranged inside the adjustment cavity. A spring is connected between the limit block and the adjustment cavity. An adjustment through hole is provided between the circular groove and the adjustment cavity. A rod body is slidably passed through the adjustment through hole. One end of the rod body is connected to the limit block.

[0022] A forward chuck is located inside the circular groove, and one end of the forward chuck is connected to the other end of the adjusting rod. A bidirectional chuck is provided on the other side of the forward chuck. A rotating mechanism with telescopic function is provided between the bidirectional chuck and the forward chuck to enable both relative rotation and relative telescopic functions between the forward chuck and the bidirectional chuck. A reverse chuck is provided on the other side of the bidirectional chuck, and the other end of the reverse chuck is concentrically connected to one end of the bent tube.

[0023] The forward chuck has forward teeth arranged circumferentially on the outer wall near the bidirectional chuck, and the reverse chuck has reverse teeth arranged circumferentially on the outer wall near the bidirectional chuck. The two sides of the bidirectional chuck are respectively provided with forward grooves and reverse grooves that are adapted to the forward teeth and reverse teeth.

[0024] Furthermore, the adjustment component includes:

[0025] The adjusting rod has an adjusting groove on the inner wall of each support plate along the length of the support plate, and the lower end of the adjusting rod is rotatably connected to the lower side of the adjusting groove. The upper end of the adjusting rod is rotatably connected to an adjusting ring. The inner wall of the support plate is also provided with a placement groove two suitable for the adjusting ring to be inserted, and a clamping component is provided between the placement groove two and the adjusting ring.

[0026] An adjusting screw is detachably installed at the bottom center of the support, and the lower side of the adjusting screw 2063 is threaded with two locking discs.

[0027] Accordingly, the card slot component includes:

[0028] The card plate is V-shaped, with its two ends being an operating end and a clamping end, respectively. A V-shaped cavity is provided on the upper side of the extension plate, with both ends of the V-shaped cavity communicating with the outside. The card plate is rotatably installed inside the V-shaped cavity. Multiple outwardly inclined guide plates are provided on the inner wall of the slide groove, and a V-groove suitable for the clamping end to be inserted is formed between every two guide plates. A torsion spring is provided between the card plate and the V-shaped cavity to clamp the clamping end against the V-groove.

[0029] The operating end extends outward and has a friction structure on its end face.

[0030] Furthermore, it also includes a connection component, which comprises:

[0031] The connecting piece is attached to both sides of each extension plate. Each extension plate and the two connecting pieces can be set in the corresponding slide groove. The lower end of the connecting piece is rotatably connected to the lower end of the extension plate. The upper outer side of the connecting piece is provided with a slider, and the upper side of the slider is rotatably connected to the connecting piece. The lower side of the connecting piece is threaded with a locking screw. The connecting piece is also provided with a limiting hole suitable for the insertion of the locking screw.

[0032] Preferably, each of the two side walls of the slide groove is provided with a strip groove 1 suitable for the sliding of the slider, and a strip groove 2 extends outward from the strip groove 1. The strip groove 2 communicates with the outside and is used for the locking screw to slide through, and the width of the strip groove 2 is smaller than the width of the strip groove 1.

[0033] Furthermore, this technical solution also includes:

[0034] The extension plate has a locking block installed on both sides of its lower part, and each corresponding slide groove has a locking groove on both sides of its lower part that is suitable for the locking block to slide into.

[0035] The upper side of the slot is provided with a threaded through hole 1, and a locking bolt 2 is provided inside the threaded through hole 1. The outer end of the card block is provided with a screw hole suitable for the locking bolt 2 to be screwed in.

[0036] Preferably, the rotating shaft includes:

[0037] The optical axis section has a semi-circular arc at the top end of the extension plate, and both ends of the upper side of the extension plate are provided with rotating grooves suitable for the insertion and rotation of the optical axis.

[0038] A threaded segment, concentrically connected to the outer end of the optical axis segment, and penetrating the sidewall of the slide groove, wherein the sidewall of the slide groove is provided with a threaded through hole two suitable for the threaded rotation of the threaded segment; and

[0039] A knob, which is mounted on the outer end of the threaded section, is used to rotate the shaft.

[0040] Based on the aforementioned solution, the rotating mechanism includes:

[0041] The rotating column has a circular cavity on the inner side of the forward chuck, and a circular hole extends outward from the circular cavity. The inner diameter of the circular hole is smaller than the inner diameter of the circular cavity. The rotating column passes through the circular hole, and one end of the rotating column is concentrically connected to the bidirectional chuck.

[0042] A limiting plate is rotatably disposed inside a circular cavity, and the width of the limiting plate is smaller than the width of the circular cavity. The other end of the rotating shaft is concentrically connected to the limiting plate.

[0043] (III) Beneficial Effects

[0044] Compared with the prior art, the present invention provides a portable geographic information mapping instrument, which has the following beneficial effects:

[0045] 1. In this invention, by disassembling and deforming the three support plates and the support base, it can not only support the main body of the surveying instrument, but also deform and assemble into an L-shape to make it suitable for shoulder carrying and easy to carry.

[0046] 2. In this invention, the extension plate and the support plate can be extended to adjust the height of the support plate, thereby adapting to the height of the surveying instrument body. Furthermore, the three extension plates and the three support plates can be independently adjusted and locked in their adjusted positions, thus better adapting to different ground conditions and achieving the effect of horizontal support.

[0047] 3. In this invention, by providing a hidden support plate on the extension plate and a hidden shoulder strap on the inner side of the support plate, not only is the volume of the extension plate itself not increased, but it can also be taken out and used at any time and stored at any time. When in use, the support plate is flipped over and the corresponding shoulder strap is pulled out and passed downward through the buckle assembly to form a backpack shape, thus realizing portable shoulder carrying.

[0048] 4. In this invention, due to the sliding fit design of the support plate and the extension plate, the support plate itself does not need to be too long, and the design length of the support plate itself can be shorter. At the same time, the support plate is set at a lower position on the extension plate. Therefore, when forming a backpack-shaped deformable assembly, the bottom of the extension plate is exactly at the waist position of the human back (that is, the upper side of the human buttocks), just like the height of a schoolbag. It is more effortless to carry the surveying instrument body at this position. The shoulder strap can also be an adjustable length shoulder strap, which is more adaptable.

[0049] 5. In this invention, the design of the positioning block facilitates the deformation and assembly of the three support plates and the three supports, making disassembly convenient, assembly strength high, and operation simple.

[0050] 6. In this invention, the roller mechanism design allows the three support plates to be used at a better angle, reducing friction with the ground. At the same time, the ball bearing design allows the balls to roll well when they come into contact with the ground when the extension plate extends outward, thus reducing friction with the ground.

[0051] 7. In this invention, the detachable rotating shaft connecting the extension plate and the upper part of the slide groove allows the extension plate and the support plate to slide relative to each other, enabling the adjustment of the height of the surveying instrument body. It also allows the extension plate and the support plate to rotate at the position of the rotating shaft, so that they can be opened at a suitable angle. Under the dual action of rollers and balls, the whole can be supported, thereby pushing the whole to move in the form of rollers or balls rotating. This reduces the need for carrying on the shoulders and back on suitable surfaces, making it easier to push and saving manpower.

[0052] 8. In this invention, by designing positioning anchors, the entire assembly can be locked to the ground after the extension plate and support plate are adjusted to the appropriate position, ensuring the overall reliability of use;

[0053] 9. In this invention, by shortening the design length of the legs on the tripod in the prior art, the overall volume of the original surveying instrument body is reduced without adding any extra volume. This allows the three support plates to be used in various positions, enabling the surveying instrument body to be carried on the shoulder, pushed, and stably supported. The design structure is ingenious and the operation is simple and easy to learn, achieving the purpose of portability. Attached Figure Description

[0054] Figure 1 This is a structural schematic diagram of the support state of the test instrument body in this application;

[0055] Figure 2 This is a schematic diagram of the structure of this application when it is assembled into a shoulder and back configuration;

[0056] Figure 3 This is a schematic diagram of the structure of this application, which is transformed and assembled into a moving state.

[0057] Figure 4 This is a schematic diagram of the structure of the support plate and the clamping assembly in this application;

[0058] Figure 5 This is a cross-sectional view of the clamping assembly and adjusting ring of this application;

[0059] Figure 6This is an exploded view of the quick-release structure of this application;

[0060] Figure 7 This is a schematic diagram of the connection between the rod body, the forward chuck, and the bidirectional chuck in this application;

[0061] Figure 8 This is an exploded three-dimensional structural diagram showing the cooperation of the support plate, extension plate, connecting plate, and adjusting rod in this application.

[0062] Figure 9 This is a partial cross-sectional view of the extension plate, the card plate, and the V-groove connection in this application;

[0063] Figure 10 This is a partial structural schematic diagram of the extension plate, positioning anchor, sliding plate, and sliding groove of this application;

[0064] Figure 11 This is a schematic diagram of the structure of the rotating shaft in this application;

[0065] Figure 12 This is a schematic diagram of the planar structure of the surveying instrument body, support, and rotating assembly of this application;

[0066] Figure 13 This is a schematic diagram of the assembly of three bends and three rotating rods in this application;

[0067] Figure 14 This is a schematic diagram of the fit between the support and the locking bolt of this application.

[0068] In the picture: 1. The main body of the surveying instrument;

[0069] 2. Tripod; 201. Support; 205. Support plate; 208. Extension plate; 211. Support plate; 212. Shoulder strap; 213. Sponge pad; 215. Positioning block; 216. Insertion hole; 217. Locking bolt one; 219. Positioning anchor; 220. Sliding groove; 221. Sliding plate;

[0070] 202. Rotating assembly; 2021. Column; 2022. Locking screw;

[0071] 203. Rotating mechanism; 2031. Rotating column; 2032. Limiting plate; 2033. Circular cavity;

[0072] 204. Quick-release structure; 2041. Rotating rod; 2042. Bend; 2043. Limiting ring one; 2044. Sleeve; 2045. Spring one; 2046. Connecting rod; 2047. Limiting ring two; 2048. Circular groove; 2049. Limiting block; 2050. Spring two; 2051. Rod body; 2052. Forward chuck; 2053. Bidirectional chuck; 2054. Reverse chuck;

[0073] 206. Adjusting assembly; 2061. Adjusting rod; 2062. Adjusting ring; 2063. Adjusting screw; 2064. Locking nut; 2065. Locking screw disc;

[0074] 207. Clamping assembly; 2071. Rotating rod; 2072. Locking rod; 2073. Through hole; 2074. Locking groove;

[0075] 209. Positioning assembly; 2091. Card plate; 2092. Guide plate; 2093. V-groove;

[0076] 210. Shaft; 2101. Optical shaft section; 2102. Threaded section; 2103. Knob;

[0077] 214. Buckle assembly; 2141. Female buckle; 2142. Male buckle;

[0078] 218. Rolling mechanism; 2181. Ball bearing; 2182. Roller;

[0079] 222. Connecting assembly; 2221. Connecting piece; 2222. Slider; 2223. Locking screw; 2224. Limiting hole; 2225. Slot one; 2226. Slot two;

[0080] 223. Clamping block; 224. Locking bolt two. Detailed Implementation

[0081] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0082] For examples, please refer to Figures 1 to 14 A portable geographic information mapping instrument includes a mapping instrument body 1 and a tripod 2 mounted on the lower side of the mapping instrument body 1. The tripod 2 further includes:

[0083] A support 201 is installed between the surveying instrument body 1 and the tripod 2 to support the surveying instrument body 1. The surveying instrument body 1 and the support 201 are rotatably connected via a rotating assembly 202 with a locking function. A preferred embodiment of the rotating assembly 202 is as follows: an inverted T-shaped column 2021 is installed on the lower side of the surveying instrument body 1, and a rotating cavity suitable for the rotation of the T-shaped column 2021 is provided in the middle region of the support 201. The support 201 has a threaded through hole communicating with the rotating cavity, and a locking screw 2022 is screwed into the through hole. The relative rotation between the rotating cavity and the T-shaped column 2021 allows adjustment of the operating angle of the surveying instrument body 1. Rotating the locking screw 2022 tightens the locking screw against the T-shaped column 2021, ensuring the positional stability of the surveying instrument body 1 after rotation. (See also...) Figure 12 ;

[0084] Support plates 205, three in number, are arranged in a triangle. The top of each support plate 205 is rotatably mounted on the underside of the support 201 via a quick-release structure 204. The quick-release structure 204 facilitates the disassembly and assembly of the three support plates 205, making them easy to carry and reinstall.

[0085] Specifically, the quick-release structure 204 includes:

[0086] The rotating rods 2041 and the bent pipes 2042 are arranged in pairs. The three bent pipes 2042 are connected to each of the three rotating rods 2041 in pairs, forming an equilateral triangle. The angle of each bent pipe 2042 is 60 degrees to ensure that it forms an equilateral triangle with the rotating rods 2041. Each rotating rod 2041 is fixedly installed at the top of each support plate 205. The outer walls of the rotating rods 2041 are symmetrically provided with limiting rings 2043, and sleeves 2044 are provided on the outer side of the limiting rings 2043. A spring 2045 connects the sleeve 2044 to the limiting rings 2043. Both the spring 2045 and the sleeve 2044 are sleeved on the outer side of the rotating rods 2041. When the support plate 205 needs to be installed, the rotating rod 2041 is aligned with one side of two adjacent bends 2042, and the spring 2045 is compressed towards the middle of the rotating rod 2041 to compress the sleeve 2044. After it is concentrically aligned with the straight part of the bend 2042, the sleeve 2044 is again fitted onto the straight part of the bend 2042, thereby realizing the connection between the rotating rod 2041 and the bend 2042. In addition, each bend 2042 is fixedly connected to the bottom end of the support 201 through the connecting rod 2046, thereby ensuring the stable connection between the support plate 205 and the support 201. A limit ring 2047 is also fixedly connected to the outer wall of the bend 2042 to abut against the sleeve 2044 and ensure the reliability of the sleeve 2044.

[0087] Furthermore, to better connect the rotating rod 2041 to the bent pipe 2042 and achieve adjustable rotation, each of the rotating rods 2041 has a circular groove 2048 at both ends, and an adjustment cavity is provided inside the circular groove 2048. A limit block 2049 is slidably arranged inside the adjustment cavity. The inner wall shape of the adjustment cavity and the outer shape of the limit block 2049 are both polygonal, so that the limit block 2049 can only move along the length direction of the rotating rod 2041 inside the adjustment cavity without rotating. A spring 2050 connects the limiting block 2049 and the adjusting cavity. An adjusting through hole is provided between the circular groove 2048 and the adjusting cavity. A rod 2051 slides through the adjusting through hole. One end of the rod 2051 is connected to the limiting block 2049. The spring 2050 can press the limiting block 2049 and the rod 2051 together, giving them compressibility and outward pressing force. Correspondingly, a forward chuck 2052 is installed at the other end of the rod 2051. The forward chuck 2052 is located at the circular groove 2048. Inside the slot 2048, a bidirectional chuck 2053 is provided on the other side of the forward chuck 2052. A rotating mechanism 203 with a telescopic function is provided between the bidirectional chuck 2053 and the forward chuck 2052, allowing for both relative rotation and telescopic functions between them. A reverse chuck 2054 is provided on the other side of the bidirectional chuck 2053, and the other end of the reverse chuck 2054 is concentrically connected to one end of the bent tube 2042. The forward chuck 2052... The upper outer wall of the bidirectional chuck 2053 is circumferentially arranged with forward teeth, and the upper outer wall of the reverse chuck 2054 is circumferentially arranged with reverse teeth. The two sides of the bidirectional chuck 2053 are respectively provided with forward and reverse grooves that mate with the forward and reverse teeth. It should be noted that the terms "forward" and "reverse" used in this embodiment are only relative descriptions for better illustrating the rotational relationship of the support plate 205, and are not absolute terms. For the forward teeth, please refer to... Figure 6 and Figure 7Supported by spring 2050, the forward-facing tooth and the forward-facing groove of the bidirectional chuck 2053 are tightly engaged. During forward rotation, the forward-facing tooth slides away from the forward-facing groove. Through the telescopic rotating mechanism 203, relative rotation can occur, and the forward-facing tooth can also generate corresponding lateral telescopic displacement due to the protrusion during rotation. At this time, the bidirectional chuck 2053 and the reverse chuck 2054 are locked together and rotate on the forward-facing groove. When the rotation reaches approximately the same angle, the elastic force of spring 2050 continues to maintain the forward-facing tooth and the bidirectional chuck 2054. The forward-facing chuck 2053 engages with the forward chuck 2052. When reverse rotation is required, the bidirectional chuck 2053 engages with the forward chuck 2052, causing the bidirectional chuck 2053 to rotate in the opposite direction. A rotational effect between the forward chuck 2052 and the reverse chuck 2054 also occurs on the other side of the bidirectional chuck 2053. Under the action of the second spring 2050, the bidirectional chuck 2053, along with the forward chuck 2052, also possesses telescoping flexibility, thus achieving relative rotation between the bidirectional chuck 2053 and the reverse chuck 2054. The mechanism of this device is similar to that of a ratchet. The purpose of this design is to allow for easy adjustment of the unfolding angle of the three support plates 205 when they need to be deployed. Furthermore, the spring 2050 provides initial locking of the rotated position, ensuring stability during deployment. Traditional tripods 2 have movable connections between their three legs, requiring manual support on one side before unfolding the other two. However, during deployment, the already deployed legs may rotate arbitrarily to other positions. Even when the tripod 2 tilts, the already deployed legs, leaving the ground, may lose their restraint and rotate towards the other two legs. If workers are holding other legs at this time, there is a risk of hand injury, making deployment difficult to control and resulting in poor stability. Therefore, this structure provides a stable locking mechanism for the unfolding angle of the support plates 205, facilitating stable and effective deployment of the three support plates 205 and providing convenience for the subsequent use of the adjustment assembly 206.

[0088] Furthermore, based on the aforementioned scheme, the rotating mechanism 203 includes a rotating column 2031 and a limiting disk 2032. The inner side of the forward chuck 2052 is provided with a circular cavity 2033, and the circular cavity 2033 extends outward with a circular hole. The inner diameter of the circular hole is smaller than the inner diameter of the circular cavity 2033. The rotating column 2031 passes through the circular hole, and one end of the rotating column 2031 is concentrically connected to the bidirectional chuck 2053. The limiting disk 2032 is rotatably disposed inside the circular cavity 2033. Furthermore, the width of the limiting disk 2032 is smaller than the width of the circular cavity 2033. The other end of the rotating shaft 210 is concentrically connected to the limiting disk 2032. Through the cooperation between the limiting disk 2032 and the circular cavity 2033, the limiting disk 2032 can rotate inside the circular cavity 2033 and also move along the length direction of the rotating shaft 210. This achieves the effect that the forward chuck 2052 and the bidirectional chuck 2053 can be tightly combined and can also be separated and rotated relative to each other.

[0089] After the three support plates 205 are adjusted to a suitable position, to ensure further stability of the three support plates 205, an adjustment assembly 206 is provided between the three support plates 205 for adjusting the opening angle of the three support plates 205. The adjustment assembly 206 includes an adjustment rod 2061. Each support plate 205 has an adjustment groove on its inner sidewall along the length of the support plate 205. The lower end of the adjustment rod 2061 is rotatably connected to the lower side of the adjustment groove. The upper end of the adjustment rod 2061 is rotatably connected to an adjustment ring 2062. The inner wall of the support plate 205 also has a placement groove for the adjustment ring 2062 to be inserted. A clamping assembly 207 is provided between the placement groove and the adjustment ring 2062. Opening the clamping assembly 207 allows the adjustment ring 2062 to be removed from the adjustment groove. Rotating the adjustment rod 2061 adjusts the opening angle of the three support plates 205. The rings 2062 are stacked together, and an adjusting screw 2063 is detachably installed at the bottom center of the support 201. The detachable installation method involves a screw hole at the bottom center of the support 201 suitable for screwing the adjusting screw 2063 in, and a locking nut 2064 on the adjusting screw 2063 for locking. In use, one end of the adjusting screw 2063 is screwed into the screw hole, and then the locking nut 2064 is rotated to lock the adjusting screw 2063 to the support 201. The bottom of the adjusting screw 2063 passes through three adjusting rings 2062, and two locking discs 2065 are threaded to the lower side of the adjusting screw 2063. The two locking discs 2065 are respectively arranged on the upper and lower sides of the three adjusting rings 2062. By adjusting and rotating the two locking discs 2065 respectively, the three adjusting rings 2062 are clamped. (See also...) Figure 1This allows the three adjusting rods 2061 to support the three support plates 205. At the same time, by rotating the two locking screws 2065, the unfolding angle of the three support plates 205 can be effectively changed simultaneously. This makes adjustment convenient and makes it easier to adjust the height of the surveying instrument body 1 later, without having to adjust the corresponding support plate 205 individually again.

[0090] The clamping component 207, as a preferred structure in this embodiment, can be found in the following description. Figure 4 and Figure 5 It includes a rotating rod 2071, which is concentrically positioned in the middle of the adjusting ring 2062 and rotatably connected to the inner wall of the placement groove 2. The other end of the rotating rod 2071 is provided with a locking rod 2072 perpendicularly connected to it. The length of the locking rod 2072 is greater than the inner diameter of the adjusting ring 2062, and the adjusting ring 2062 has a through hole 2073 suitable for the locking rod 2072 to pass through. One side of the through hole 2073 has a locking groove 2074, wherein two locking grooves 2074 are relative to the rotating rod 2071. The rings are symmetrically positioned at their center. When it is necessary to lock the position of the adjusting ring 2062, the adjusting ring 2062 is fastened in the second placement slot, and both ends of the locking rod 2072 are passed through the two through holes 2073 respectively. Then, the rotating rod 2071 is rotated so that both ends of the locking rod 2072 are locked in the two locking slots 2074 respectively, thereby locking the adjusting ring 2062. When the adjusting ring 2062 needs to be used, the locking rod 2072 is rotated in the opposite direction to remove the adjusting ring 2062.

[0091] Furthermore, to ensure the effective usable length of the support plate 205, a groove is provided on the outer wall of each support plate 205, and an extension plate 208 is slidably installed inside the groove. When it is necessary to adjust the usable length of the support plate 205, the extension plate 208 is pulled outward to extend it. A locking component 209 is provided between the extension plate 208 and the inner wall of the groove to lock the extended position, ensuring the stable use of the extension plate 208. The upper area of ​​the extension plate 208 and the upper area of ​​the groove are also connected. The extension plate 208 is rotatably connected via a detachable pivot 210. The detachable pivot 210 is designed so that when the extension plate 208 needs to be pulled out, the pivot 210 can be detached to release the lock between the extension plate 208 and the support plate 205, allowing it to be stretched outwards. The pivot 210 is also designed so that when it is not being stretched, the extension plate 208 and the support plate 205 can still rotate, allowing the extension plate 208 and the support plate 205 to have a certain angle of use, providing support for subsequent mobility and portability.

[0092] Correspondingly, the upper outer wall of the extension plate 208 is provided with a placement groove, and the support plate 211 is rotatably installed inside the placement groove. The maximum rotation angle between the support plate 211 and the extension plate 208 is 90 degrees. The placement cavity is also provided with a shoulder strap 212 via a roller. By flipping the support plate 211, it is spread 90 degrees apart from the extension plate 208. The inner wall of the support plate 211 is provided with a groove, and a sponge pad 213 is attached inside the groove. The lower side of the support plate 211 is provided with a placement cavity that communicates with the outside. The shoulder strap 212 extends out from the lower placement cavity, and a buckle assembly 214 is also provided. The buckle assembly 214 includes a female buckle 2141 and a male buckle 2142. The female buckle 2141 is installed at one end of the shoulder strap 212, and the male buckle 2142 is installed in the lower area of ​​the outer wall of the extension plate 208 for fastening the extended shoulder strap 212, thereby forming a shoulder strap 212 structure, which allows the whole to be carried by shoulder carrying, making it more convenient.

[0093] In addition, to better facilitate carrying the entire structure on the shoulder, each of the support plates 205 has two symmetrical positioning blocks 215 installed on its upper and lower inner walls, and each positioning block 215 has a positioning through hole. One side of the support 201 has three sets of insertion holes 216 suitable for inserting the two positioning blocks 215 on each support plate 205. A locking bolt 217 passes through the upper sidewall of the insertion hole 216, and the lower sidewall of the insertion hole 216 has a threaded hole suitable for threaded connection of the locking bolt 217. When carrying the structure on the shoulder... When the spring 2045 is compressed, the sleeve 2044 is separated from the bend 2042, and the three support plates 205 are disassembled. Then, the positioning blocks 215 on the support plates 205 are inserted into the corresponding insertion holes 216 on the support 201. Then, the locking bolt 217 passes through the insertion hole 216 and the positioning through hole on the positioning block 215 and is tightened downwards into the threaded hole, thereby forming an L-shape between the support plates 205 and the support 201, shortening the overall volume and allowing for better shoulder carrying of the surveying instrument body 1. Please refer to [link / reference]. Figure 2 The lower side of the curved tube 2042 is also connected to a support leg, which makes it easy to place on the ground when it is formed into a shoulder and back shape;

[0094] Furthermore, a rolling mechanism 218 is provided on the lower side of the support plate 205. The rolling mechanism 218 includes balls 2181 and rollers 2182. The lower end of the extension plate 208 has a pointed structure, and the balls 2181 are rotatably installed inside the pointed structure. Rotating grooves are provided on both sides of the lower end of the support plate 205, and each rotating groove is equipped with a roller 2182. The design of the rollers 2182 not only allows the entire assembly to move, facilitating its forward movement, reducing manpower, and increasing portability, but also reduces resistance to the ground when the support plate 205 is extended. When the extension plate 208 is extended, the balls 2181... Adjusting the two locking screws 2065 allows for better expansion and contraction of the support plate 205 at different operating angles. To lock the final operating position, a sliding positioning anchor rod 219 is installed on the rear side of the extension rod. Correspondingly, a sliding groove 220 is provided on the lower part of the inner wall of the extension rod near the sliding groove. A sliding plate 221 is slidably installed inside the sliding groove 220, with the sliding direction of the sliding plate 221 being the length direction of the extension plate 208. A sliding circular hole is provided on the side of the sliding groove 220 near the ball bearing 2181. The positioning anchor rod 219 is slidably arranged in the sliding circular hole, with one end of the positioning anchor rod 219 connected to the sliding plate 221 and the other end of the positioning anchor rod 219 being pointed. Please refer to [link / reference needed]. Figure 10 When the extension plate 208 is set to the desired position, the sliding plate 221 is slid down to push the positioning anchor 219 into the ground, thereby effectively fixing and supporting the overall adjusted position and preventing secondary movement. In addition, for ease of operation, the outer wall of the sliding plate 221 is provided with a corrugated structure to increase friction and facilitate sliding operation. The sliding fit between the sliding plate 221 and the sliding groove 220 is relatively tight to prevent the positioning anchor 219 from sliding out arbitrarily without manual pushing.

[0095] Based on the aforementioned solution, it needs to be further explained that the card slot component 209 includes:

[0096] The clamping plate 2091 is V-shaped, with its two ends configured as an operating end and a clamping end, respectively. A V-shaped cavity is provided on the upper side of the extension plate 208, with both ends communicating with the outside. The clamping plate 2091 is rotatably mounted inside the V-shaped cavity. Multiple outwardly inclined guide plates 2092 are provided on the inner wall of the sliding groove, and a V-groove 2093 is formed between every two guide plates 2092 to accommodate the clamping end. A torsion spring is provided between the clamping plate 2091 and the V-shaped cavity to press the clamping end against the V-groove 2093. When the extension plate 208 is pulled outward, the clamping end on the clamping plate 2091 slides downward along the multiple guide plates 2092. When slid to the usage position, the clamping end of the card plate 2091, under the action of the torsion spring, inserts into the corresponding V-groove 2093, clamping the relative position between the extension plate 208 and the support plate 205. The operation is convenient. The operating end extends outward and has a friction structure on its end face. When it is necessary to release the clamping, the operating end is turned so that the clamping end rotates into the V-shaped cavity, thereby allowing the extension plate 208 to slide back between the slide groove. Furthermore, the support plate 205 can be marked with scales corresponding to the position of each V-groove 2093, so that the operator can determine the approximate position when extending the three extension plates 208, avoiding the trouble of arbitrarily pulling out the extension plates 208 and then adjusting them later.

[0097] For further details, please refer to [link / reference]. Figure 8The system also includes a connecting assembly 222, which includes connecting pieces 2221. One connecting piece 2221 is attached to each side of each extension plate 208. Each extension plate 208 and two connecting pieces 2221 can be disposed within a corresponding sliding groove. The lower end of the connecting piece 2221 is rotatably connected to the lower end of the extension plate 208. A slider 2222 is provided on the outer side of the upper end of the connecting piece 2221, and the upper side of the slider 2222 is rotatably connected to the connecting piece 2221. A locking screw 2223 is threadedly connected to the lower side of the connecting piece 2221. The connecting piece 2221 also has a limiting hole 2224 suitable for the insertion of the locking screw 2223. Both side walls of the sliding groove are provided with features suitable for the sliding of the slider 2222. A first groove 2225 is provided, and a second groove 2226 extends outward from the first groove 2225. The second groove 2226 communicates with the outside and is used for the sliding of the locking screw 2223. The width of the second groove 2226 is smaller than the width of the first groove 2225. When the extension plate 208 and the support plate 205 need to slide, the locking screw 2223 is tightened to keep the slider 2222 and the connecting piece 2221 locked together. At the same time, the rotating shaft 210 is disassembled. Then, through the sliding cooperation between the slider 2222 and the first groove 2225, and the setting of the second groove 2226, the locking screw 2223 can slide outward along the direction of the groove with the extension plate 208. When the extension plate 208 and the support plate 205 need to slide, the second groove 2226 is used to slide outward along the direction of the groove. When the plates 205 need to be rotated at an angle, loosen the locking screw 2223. At this time, the slider 2222 and the connecting piece 2221 can rotate. With the pivot 210 as the center, the extension plate 208 is flipped outward. The slider 2222 can continue to slide inside the slot 2225. At the same time, the lower side of the connecting piece 2221, under the rotational connection with the extension plate 208, generates a corresponding angle with the extension plate 208. When the extension plate 208 and the support plate 205 are unfolded to a suitable angle, tighten the locking screw 2223. At this time, since the free end of the locking screw 2223 is in the slot, it can continue to rotate, so that the cap end on the locking screw 2223 is locked with the outer wall of the support plate 205, thereby locking the plate. The position of the connecting piece 2221 is locked. The purpose of the connecting piece 2221 is to support the unfolding angle between the extension plate 208 and the support plate 205. Locking the connecting piece 2221 locks the usage angle between the extension plate 208 and the support plate 205. Through the opening design of the extension plate 208 and the support plate 205, the whole unit can be pushed and moved under the action of the ball bearing 2181 and the roller 2182. When it is tiring to carry the whole unit, it can be pushed and moved. When moving, choose a relatively flat surface for movement, and choose the shoulder carrying method on a more bumpy surface. Thus, this application is more adaptable and can switch the portable movement mode according to the usage environment, reducing the limitation of use.

[0098] The rotating shaft 210 is designed to consist of an optical shaft section 2101, a threaded section 2102, and a knob 2103. The top of the extension plate 208 is semi-circular, and both ends of the upper side of the extension plate 208 are provided with grooves suitable for the insertion and rotation of the optical shaft. The threaded section 2102 is concentrically connected to the outer end of the optical shaft section 2101 and penetrates the side wall of the groove. The side wall of the groove is provided with a threaded through hole suitable for the threaded rotation of the threaded section 2102. The knob 2103 is installed at the outer end of the threaded section 2102 and is used to rotate the rotating shaft 2101. When the extension plate 208 and the support plate 205 need to rotate, use the knob 2103 to rotate the shaft 210. Through the engagement of the threaded section 2102 and the threaded through hole 2, the optical shaft section 2101 is inserted into the rotating groove. The engagement of the two optical shaft sections 2101 forms a rotatable structure between the upper side of the extension plate 208 and the sliding groove. When the extension plate 208 and the support plate 205 need to extend and slide, unscrew the threaded section 2102 outward to dislodge the optical shaft section 2101 from the rotating groove, thus realizing the sliding engagement operation between the extension plate 208 and the support plate 205.

[0099] Furthermore, after the extension plate 208 is retracted into the slide groove, a locking block 223 is installed on both sides of the lower part of each extension plate 208, and a slot suitable for the locking block 223 to slide into is provided on both sides of the lower part of each corresponding slide groove. A threaded through hole is provided on the upper side of the slot, and a locking bolt 224 is provided inside the threaded through hole. A screw hole suitable for the locking bolt 224 to be screwed into is provided on the outer end of the locking block 223. By locking the locking block 223 into the slot and rotating the locking bolt 224, the lower side of the extension plate 208 and the support plate 205 are locked together. This makes it easier to carry on the shoulder and ensures a stable connection between the extension plate 208 and the support plate 205. Since the support plate 211 is set on the extension plate 208 and the support plate 205 is connected to the support 201, effective locking between the extension plate 208 and the support plate 205 is required to prevent it from falling off and affecting the shoulder carrying operation.

[0100] In summary, the operating principle of this portable geographic information mapping instrument is as follows:

[0101] When the surveying instrument body 1 needs to be carried on the shoulder, compress the corresponding sleeve 2044 to separate the rotating rod 2041 from the bent pipe 2042, remove the corresponding support plate 205, and then insert the positioning blocks 215 on the support plate 205 into the corresponding insertion holes 216 on the support 201, and use the locking bolts 217 to lock and fix the support plate 205 on the support 201, so that the three support plates 205 and the support 201 form an L-shaped fit relationship, and open the two outer supports. The support plate 211 has a slot for easy removal. After flipping the support plate 211, the shoulder strap 212 can be rotated out from the storage cavity. The design of the roller can install a corresponding ruler spring, which is a common component in measuring tapes. When the shoulder strap 212 is not in use, it can be easily retracted into the storage cavity. After the shoulder strap 212 is pulled out, the female buckle 2141 is inserted into the male buckle 2142 on the extension plate 208 to enable the shoulder strap 212 to be used for shoulder carrying.

[0102] When walking on a relatively flat surface, loosen the locking screw 2223 to release the lock between the locking screw 2223 and the connecting piece 2221. At the same time, rotate the shaft 210 outward through the knob 2103 to extend the optical shaft section 2101 out of the slot. Then, loosen the second locking bolt 223 and slide the extension plate 208 downwards to allow the locking block 224 to slide out of the slot. Next, move the locking plate 2091 to separate it from the V-groove 2093. Then, retract the top of the extension plate 208 to the top of the slot and rotate the knob 2103 inwards to allow the optical shaft section 2101 to re-enter the slot. Finally, rotate the extension plate 208 to the appropriate unfolding angle and tighten the locking screw 2223 to lock the connecting piece 2221 and the support plate 205, ensuring the extension... The extension angles of the long plate 208 and the support plate 205 are adjusted in the same way. All three support plates 205 are operated to the same operating angle. At this time, since the extension plate 208 and the support plate 205 form a triangular unfolding shape, the whole is slightly tilted. Then, the whole can be moved by the action of the ball bearing 2181 and the roller 2182, which saves manpower. The three rotating rods 2041 can form handles. In addition, the adjusting screw 2063 can also rotate at the middle of the bottom of the support 201 to play a supporting role and prevent the surveying instrument body 1 from tilting if the center of gravity is unstable. If tilting occurs, the presence of the adjusting screw 2063 can provide simple support. Of course, in actual operation, the operator will press down the position of the rotating rod to ensure that the surveying instrument body 1 is pushed forward stably.

[0103] After moving the surveying instrument body 1 to the usage position, unscrew the locking bolt 217 and remove the three support plates 205 from one side of the support 201. Simultaneously, arrange the three rotating rods 2041 on the three support plates 205 onto the bent pipes 2042 on the lower side of the support 201. Then, rotate the angles of the three support plates 205 while tightening the adjusting screw 2063 on the lower side of the support 201. Remove the three adjusting rings 2062, stack them, and insert them through the lower side of the adjusting screw 2063. Lock their positions using the two locking discs 2065. Adjust the angles of the three support plates 205. Support the axis, then unlock the pivot 210 to disengage the optical axis section 2101 from the slot on the extension plate 208. Simultaneously unscrew the locking bolt 223 and pull the extension plate 208 outward to a suitable height. According to the usage height and level requirements of the surveying instrument body 1, extend the length of the three extension plates 208 to a suitable position. Finally, slide the corresponding sliding plates 221 downward to insert the positioning anchor rod 219 into the ground to ensure overall stability. As for the adjustment screw 2063, since it is small and light, it can be easily carried by hand.

[0104] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable geographic information mapping instrument, comprising a mapping instrument body (1) and a tripod (2) mounted on the lower side of the mapping instrument body (1), characterized in that, The tripod (2) also includes: Support (201), the support (201) is installed between the surveying instrument body (1) and the tripod (2) for supporting the surveying instrument body (1), and the surveying instrument body (1) is rotatably connected to the support (201); Support plate (205), the number of support plates (205) is three, the three support plates (205) are arranged in a triangle, and the top of each support plate (205) is rotatably mounted on the underside of the support (201) through a quick-release structure (204), and an adjustment component (206) for adjusting the opening and closing angle of the three support plates (205) is also provided between the three support plates (205). The extension plate (208) has a groove on the outer side wall of each of the support plates (205), and the extension plate (208) is slidably installed inside the groove. A locking assembly (209) is provided between the extension plate (208) and the inner wall of the groove, and the upper area of ​​the extension plate (208) and the upper area of ​​the groove are rotatably connected by a detachable rotating shaft (210). The support plate (211) has a placement groove on the upper side of the outer wall of the extension plate (208), and the support plate (211) is rotatably installed inside the placement groove. The maximum rotation angle between the support plate (211) and the extension plate (208) is 90 degrees. The inner wall of the support plate (211) has a groove, and the lower side of the support plate (211) has a placement cavity that communicates with the outside. The placement cavity also has a shoulder strap (212) provided through a roller. The buckle assembly (214) is used to fasten the extended shoulder strap (212); Positioning blocks (215): Two symmetrical positioning blocks (215) are installed on the upper and lower parts of the inner wall of each support plate (205), and each positioning block (215) is provided with a positioning through hole. One side of the support (201) is provided with three sets of insertion holes (216) suitable for inserting the two positioning blocks (215) on each support plate (205). The upper side wall of the insertion hole (216) is provided with a locking bolt (217), and the lower side wall of the insertion hole (216) is provided with a threaded hole suitable for threaded connection of the locking bolt (217). The rolling mechanism (218) includes a ball (2181) and a roller (2182). The lower end of the extension plate (208) is provided with a pointed structure, and the ball (2181) is rotatably installed inside the pointed structure. The lower end of the support plate (205) is provided with rotating grooves on both sides, and each rotating groove is equipped with the roller (2182). The inner side of the extension plate (208) is also slidably installed with a positioning anchor rod (219) to lock the position of the extension plate (208) in contact with the ground.

2. The portable geographic information mapping instrument according to claim 1, characterized in that, The quick-release structure (204) includes: There are three rotating rods (2041), and each rotating rod (2041) is fixedly installed on the top of each support plate (205). The outer walls of the rotating rods (2041) are symmetrically provided with limiting rings (2043), and the outer side of the limiting rings (2043) is also provided with sleeves (2044). A spring (2045) is connected between the sleeves (2044) and the limiting rings (2043). The springs (2045) and the sleeves (2044) are both sleeved on the outside of the rotating rods (2041). The bend (2042) has an angle of 60 degrees and there are three bends (2042). The three bends (2042) are connected to the three rotating rods (2041) in pairs and form an equilateral triangle. Each bend (2042) is fixedly connected to the bottom end of the support (201) through a connecting rod (2046). A limit ring (2047) is also fixedly connected to the outer wall of the bend (2042) to abut against the sleeve (2044). A circular groove (2048) is provided at both ends of each of the rotating rods (2041), and an adjustment cavity is provided on the inner side of the circular groove (2048). A limit block (2049) is slidably arranged inside the adjustment cavity. A spring (2050) is connected between the limit block (2049) and the adjustment cavity. An adjustment through hole is provided between the circular groove (2048) and the adjustment cavity. A rod body (2051) slides through the adjustment through hole. One end of the rod body (2051) is connected to the limit block (2049). A forward chuck (2052) is located inside the circular groove (2048), and one end of the forward chuck (2052) is connected to the other end of the rod (2051). A bidirectional chuck (2053) is provided on the other side of the forward chuck (2052). A rotating mechanism (203) with telescopic function is provided between the bidirectional chuck (2053) and the forward chuck (2052) to enable both relative rotation and relative telescopic functions between the forward chuck (2052) and the bidirectional chuck (2053). A reverse chuck (2054) is provided on the other side of the bidirectional chuck (2053), and the other end of the reverse chuck (2054) is concentrically connected to one end of the bent tube (2042). The forward chuck (2052) has forward teeth arranged circumferentially on the outer wall near the bidirectional chuck (2053), and the reverse chuck (2054) has reverse teeth arranged circumferentially on the outer wall near the bidirectional chuck (2053). The two sides of the bidirectional chuck (2053) are respectively provided with forward grooves and reverse grooves that are adapted to the forward teeth and reverse teeth.

3. A portable geographic information mapping instrument according to claim 2, characterized in that, The adjustment component (206) includes: An adjusting rod (2061) is provided on the inner wall of each support plate (205) along the length of the support plate (205), and the lower end of the adjusting rod (2061) is rotatably connected to the lower side of the adjusting groove. An adjusting ring (2062) is rotatably connected to the upper end of the adjusting rod (2061). The inner wall of the support plate (205) is also provided with a second placement groove suitable for the adjusting ring (2062) to be inserted, and a clamping assembly (207) is provided between the second placement groove and the adjusting ring (2062). An adjusting screw (2063) is detachably installed at the bottom center of the support (201), and two locking discs (2065) are threadedly connected to the lower side of the adjusting screw (2063).

4. A portable geographic information mapping instrument according to claim 3, characterized in that, The card slot component (209) includes: The card plate (2091) is V-shaped, with the two ends of the card plate (2091) respectively set as an operating end and a pressing end, and a V-shaped cavity is provided in the upper area of ​​the extension plate (208). The two ends of the V-shaped cavity are connected to the outside. The card plate (2091) is rotatably installed inside the V-shaped cavity. Multiple outwardly inclined guide plates (2092) are provided on the inner wall of the slide groove, and a V-groove (2093) suitable for the pressing end to be inserted is formed between every two guide plates (2092). A torsion spring is provided between the card plate (2091) and the V-shaped cavity to press the pressing end against the V-groove (2093). The operating end extends outward and has a friction structure on its end face.

5. A portable geographic information mapping instrument according to claim 4, characterized in that, It also includes a connection component (222), which includes: Connecting piece (2221), one of the connecting pieces (2221) is attached to both sides of each extension plate (208). Each extension plate (208) and two connecting pieces (2221) can be set in the corresponding slide groove. The lower end of the connecting piece (2221) is rotatably connected to the lower end of the extension plate (208). A slider (2222) is provided on the outer side of the upper end of the connecting piece (2221). The upper side of the slider (2222) is rotatably connected to the connecting piece (2221). A locking screw (2223) is threadedly connected to the lower side of the connecting piece (2221). A limiting hole (2224) suitable for the insertion of the locking screw (2223) is also provided on the connecting piece (2221). The slide groove has two side walls with a strip groove 1 (2225) suitable for sliding of the slider (2222), and the strip groove 1 (2225) extends outward to provide a strip groove 2 (2226). The strip groove 2 (2226) communicates with the outside and is used for the locking screw (2223) to slide through. The width of the strip groove 2 (2226) is smaller than the width of the strip groove 1 (2225).

6. A portable geographic information mapping instrument according to claim 5, characterized in that, Also includes: The card block (223) is installed on both sides of the lower part of each of the extension plates (208), and a slot suitable for the card block (223) to slide into is provided on both sides of the lower part of each corresponding slide. The upper side of the slot is provided with a threaded through hole 1, and the inside of the threaded through hole 1 is provided with a locking bolt 2 (224), and the outer end of the card block (223) is provided with a screw hole suitable for the locking bolt 2 (224) to be screwed in.

7. A portable geographic information mapping instrument according to claim 6, characterized in that, The rotating shaft (210) includes: The optical axis section (2101) has a semi-circular arc at the top of the extension plate (208), and both ends of the upper side of the extension plate (208) are provided with rotating grooves suitable for the insertion and rotation of the optical axis. A threaded segment (2102) is concentrically connected to the outer end of the optical axis segment (2101), and the threaded segment (2102) penetrates the side wall of the slide groove. The side wall of the slide groove is provided with a threaded through hole two suitable for the threaded rotation of the threaded segment (2102); and A knob (2103) is mounted on the outer end of the threaded section (2102) for rotating the shaft (210).

8. A portable geographic information mapping instrument according to claim 7, characterized in that, The rotating mechanism (203) includes: The rotating column (2031) has a circular cavity (2033) on the inner side of the forward chuck (2052), and the circular cavity (2033) extends outward with a circular hole. The inner diameter of the circular hole is smaller than the inner diameter of the circular cavity (2033). The rotating column (2031) passes through the circular hole, and one end of the rotating column (2031) is concentrically connected to the bidirectional chuck (2053). The limiting disk (2032) is rotatably disposed inside the circular cavity (2033), and the width of the limiting disk (2032) is smaller than the width of the circular cavity (2033). The other end of the rotating column (2031) is concentrically connected to the limiting disk (2032).

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