Portable outdoor surveying and mapping instrument for geographic surveying and mapping

Abstract

The invention discloses a portable outdoor surveying and mapping instrument for geographical surveying and mapping, and relates to the technical field of surveying and mapping instruments, the portable outdoor surveying and mapping instrument comprises a surveying and mapping instrument body, an insertion rod is fixedly connected to the middle position of the bottom surface of the surveying and mapping instrument body, the bottom end of the insertion rod is inserted into a sleeve rod, and the insertion rod is fixedly mounted in the sleeve rod through a bolt; the bottom end of the sleeve rod is fixedly connected to a socket, a tray is arranged on the bottom face of the socket, a slot is formed in the tray, the socket is slidably connected to the interior of the slot, the tray is fixedly installed on the top face of a butt-joint disc, the butt-joint disc is fixedly connected with a plurality of sets of fixing columns, and the fixing columns are fixedly connected to the top face of the butt-joint disc. The bottom end of the fixing column is fixedly connected to the base plate. The surveying instrument is reasonable in structure, the overall height of the surveying instrument body can be adjusted through the supporting assembly, then the fixing rod can be folded and stored conveniently through cooperative use of the limiting assembly and the butt joint assembly, the overall length of the surveying instrument body is reduced, and carrying is very convenient.

Description

Technical Field

[0001] The invention relates to the technical field of surveying and mapping instruments, and in particular to a portable outdoor surveying and mapping instrument used for geographical surveying and mapping. Background Art

[0002] Surveying instruments are instruments and devices designed and manufactured for surveying and mapping operations. Simply put, they are instruments and devices designed and manufactured for data collection, processing, and output. In the planning, design, construction, and management stages of engineering construction, various instruments for orientation, distance measurement, angle measurement, height measurement, mapping, and photogrammetry are required for surveying work.

[0003] The existing surveying instrument is composed of components such as a base, a docking plate and a support plate. When in use, the surveying instrument body is installed on the base, and then the height of the surveying instrument is freely adjusted by the cooperation of the docking plate and the support plate. However, most of the existing docking plates and support plates are connected by sliding, which makes the surveying instrument longer as a whole and very inconvenient to carry. Summary of the invention

[0004] The purpose of the present application is to provide a portable outdoor surveying instrument for geographic surveying, which realizes that the overall height of the surveying instrument body can be adjusted through a support assembly, and then the fixing rod can be folded and stored by using a limit assembly and a docking assembly, thereby reducing the overall length of the surveying instrument body and making it very convenient to carry.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a portable outdoor surveying instrument for geographic surveying and mapping, comprising a surveying instrument body, a plug rod is fixedly connected to the middle position of the bottom surface of the surveying instrument body, the bottom end of the plug rod is inserted into the inside of the sleeve rod, the plug rod is fixedly installed in the inside of the sleeve rod by bolts, the bottom end of the sleeve rod is fixedly connected to the socket, the bottom surface of the socket is provided with a tray, a slot is opened on the tray, the socket is slidably connected to the inside of the slot, the tray is fixedly installed on the top surface of the docking tray, the docking tray is fixedly connected with a plurality of groups of fixing columns, the bottom ends of the fixing columns are fixedly connected to the chassis, and the middle position of the bottom surface of the chassis is fixedly connected to a limiting rod; it also includes a supporting assembly, a limiting assembly and a docking assembly, the supporting assembly is arranged at the bottom position of the chassis for use with the surveying instrument body as a whole, the limiting assembly is installed on a slider for fixed use, and the docking assembly is arranged on the slider for folding the supporting plate for use.

[0006] Preferably, the support assembly includes several groups of docking seats fixedly mounted on the bottom surface of the chassis, the docking seat is rotatably connected to a rotating shaft, the rotating shaft is fixedly connected to a connecting seat, the connecting seat is fixedly mounted on a fixed plate, a pair of fixing rods are fixedly connected to one side of the fixing plate, and a first baffle is fixedly connected to the other end of the pair of fixing rods.

[0007] Preferably, a toothed plate is fixedly connected to the inner side of the fixed plate, a slider is slidably connected between a pair of fixed rods, a limited seat is fixedly connected to the inner side of the slider, a positioning plate is fixedly connected to the limited seat, a hinge seat is fixedly connected to the middle position of the top surface of the positioning plate, a linkage plate is rotatably connected to the hinge seat, the other end of the linkage plate is rotatably connected to a ring, and the ring is slidably connected to the hinge seat.

[0008] Preferably, a through groove is provided on the limit seat, a sliding seat is slidably connected inside the through groove, one end of the sliding seat is slidably connected to the sliding rod, the bottom end of the sliding rod is fixedly connected to the first axle seat, the first axle seat is fixedly connected to one side of the limit seat, the top end of the sliding rod is fixedly connected to the second baffle, a first spring is sleeved on the sliding rod, and two ends of the first spring are respectively fixedly connected to one side of the sliding seat and one side of the second baffle.

[0009] Preferably, the other end of the slide is fixedly connected with an adjustment block, the bottom surface of the adjustment block is fixedly connected with a base, the bottom surface of the base is provided with a plurality of groups of first latching teeth, and the first latching teeth are clamped on the tooth plate.

[0010] Preferably, the top surface of the adjusting block is fixedly connected to a top seat, a limiting shaft is fixedly connected to the top seat, both ends of the limiting shaft are rotatably connected to pull plates, a pull rod is fixedly connected between the top ends of the pull plates, a pair of second shaft seats are fixedly connected to the top surface of the limiting seat, an adjusting shaft is rotatably connected between the pair of second shaft seats, a sleeve is fixedly connected to the adjusting shaft, a pull block is fixedly connected to the surface of the sleeve, a clamping plate is fixedly connected to the surface of the sleeve, a movable groove is provided on the clamping plate, and the pull rod is slidably connected to the inside of the movable groove.

[0011] Preferably, the limit assembly includes an adjustment seat fixedly mounted on the slider, the adjustment seat is rotatably connected to a main shaft, a gear is fixedly connected to the middle position of the main shaft, a clamping seat is fixedly connected to the main shaft, a support plate is fixedly connected to the clamping seat, a guide groove is provided on the support plate, the other end of the support plate is fixedly connected to a docking plate, a triangular block is fixedly connected to the bottom surface of the docking plate, and an L-shaped plate is fixedly connected to the surface of the support plate.

[0012] Preferably, a pair of positioning rods are fixedly connected inside the adjusting seat, a sleeve is slidably connected to the pair of positioning rods, a second spring is sleeved on the pair of positioning rods, two ends of the second spring are respectively fixedly connected to the inner wall of the adjusting seat and the bottom surface of the sleeve, the sleeve is fixedly connected to the limit block, a plurality of groups of second teeth are provided on the top surface of the limit block, the second teeth are clamped on the gear, an extrusion block is fixedly connected to the bottom surface of the limit block, a camshaft is fitted on the bottom surface of the extrusion block, the camshaft is fixedly connected to the adjusting rod, the adjusting rod is rotatably connected to the third shaft seat, and one end of the adjusting rod is fixedly connected to the adjusting disk.

[0013] Preferably, the docking assembly includes a side plate fixedly mounted on the fixed plate, the side plate is fixedly connected with a support foot, the support foot is fixedly connected with a pair of arm rods, the pair of arm rods are slidably connected with a box body, and the box body is provided with a slot.

[0014] Preferably, one end of a pair of arm rods is fixedly connected with a third baffle, a third spring is sleeved on the pair of arm rods, two ends of the third spring are respectively fixedly connected with one side of the box body and one side of the third baffle, the interior of the box body is fixedly connected with a side seat, and a pull column is fixedly connected to the side seat.

[0015] In summary, the present invention has the following beneficial effects: 1. The present invention has a reasonable structure. When the slider is moved, a limited seat is fixedly connected to the slider, and the pull block on the limited seat is pulled. The pull block causes the adjusting shaft on the sleeve to rotate on the second shaft seat. A clamping plate is fixedly connected to the sleeve, and a movable groove is provided inside the clamping plate. The pull rod slides inside the movable groove through the rotation of the sleeve, and then the pull rod drives the top seat on the limited shaft to move upward through the pull plate. The movement of the top seat causes the slide seat on the adjusting block to slide on the slide rod. The movement of the adjusting block drives the first clamping tooth to disengage from the adjusting block through the base, thereby facilitating the overall movement of the slider on the fixed rod, thereby facilitating the overall height adjustment of the surveying instrument body. 2. In the present invention, when the support plate is rotated, the adjusting disk is rotated, and the rotation of the adjusting disk drives the camshaft on the adjusting rod to rotate. The camshaft is attached to the bottom surface of the extrusion block, and the limit block on the extrusion block is moved downward as a whole through the rotation of the camshaft, so that the sleeve can slide on the positioning rod. A plurality of groups of second latching teeth are fixedly connected to the limit block, and the second latching teeth are disengaged from the gear through the movement of the limit block, so that the support plate can be rotated as a whole; 3. In the present invention, the support plate is rotated 180 degrees, and an L-shaped plate is fixedly connected to the support plate. The L-shaped plate is pressed against the arc surface of the box body by the rotation of the support plate. A slot is provided on the box body. When the box body is pressed by the L-shaped plate, the box body will slide on the arm, so that the third spring can be pulled. When the L-shaped plate moves to the position of the slot opening, the slot is clamped on the L-shaped plate by the elastic force of the third spring, so that the support plate can be folded and stored as a whole for easy carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the surveying and mapping instrument; Figure 2 This is a schematic diagram of the three-dimensional structure of the surveying and mapping instrument body when viewed from above; Figure 3 It is a schematic diagram of the three-dimensional structure of the chassis; Figure 4 is a schematic diagram of the three-dimensional structure of the fixing rod; Figure 5 This is a schematic diagram of the three-dimensional structure of the fixing rod when viewed from above; Figure 6 It is a schematic diagram of the three-dimensional structure of the limiting seat; Figure 7 It is a schematic diagram of the three-dimensional structure of the adjustment seat; Figure 8 for Figure 4 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1. surveying instrument body; 101. plug rod; 102. sleeve rod; 103. bolt; 104. socket; 105. tray; 106. slot; 107. docking plate; 108. fixing column; 109. chassis; 110. limit rod; 2. docking seat; 201. rotating shaft; 202. connecting seat; 203. fixing plate; 204. fixing rod; 205. first baffle; 206. gear plate; 207, slider; 208, limit seat; 209, positioning plate; 210, hinge seat; 211, linkage plate; 212, collar; 3, through slot; 301, slide seat; 302, slide rod; 303, first shaft seat; 304, second baffle; 305, first spring; 306, adjustment block; 307, base; 308, first latch; 309, top seat; 310, limit shaft; 31 1. Pull plate; 312. Pull rod; 313. Second shaft seat; 314. Adjusting shaft; 315. Sleeve; 316. Pull block; 317. Clamp plate; 318. Movable groove; 4. Adjusting seat; 401. Spindle; 402. Gear; 403. Clamp seat; 404. Support plate; 405. Guide groove; 406. Docking plate; 407. Triangular block; 408. L-shaped plate; 5. Positioning rod; 501. Sleeve; 502, second spring; 503, limit block; 504, second latch; 505, extrusion block; 506, camshaft; 507, adjustment rod; 508, third shaft seat; 509, adjustment plate; 6, side plate; 601, support foot; 602, arm; 603, box body; 604, slot; 605, third baffle; 606, third spring; 607, side seat; 608, pull column. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: Reference Figure 1 - Figure 8The portable outdoor surveying instrument for geographic surveying shown in the figure comprises a surveying instrument body 1, a plug rod 101 is fixedly connected to the middle position of the bottom surface of the surveying instrument body 1, the bottom end of the plug rod 101 is inserted into the inside of the sleeve rod 102, the plug rod 101 is fixedly installed in the inside of the sleeve rod 102 by bolts 103, the bottom end of the sleeve rod 102 is fixedly connected to the socket 104, the bottom surface of the socket 104 is provided with a tray 105, the tray 105 is provided with a slot 106, the socket 104 is slidably connected to the inside of the slot 106, and the tray 105 is fixedly installed It is mounted on the top surface of the docking plate 107, and the docking plate 107 is fixedly connected with several groups of fixed columns 108. The bottom ends of the fixed columns 108 are fixedly connected to the chassis 109, and the middle position of the bottom surface of the chassis 109 is fixedly connected with a limit rod 110; it also includes a support component, a limit component and a docking component. The support component is arranged at the bottom position of the chassis 109 for use with the surveying instrument body 1 as a whole, the limit component is installed on the slider 207 for fixed use, and the docking component is arranged on the slider 207 for folding the support plate 404.

[0021] Specifically, it should be noted that the specific measurement methods of the surveying and mapping instrument body 1 are all referenced through the existing technology, and will not be elaborated in detail here.

[0022] As an implementation method in this embodiment, the support assembly includes a plurality of docking seats 2 fixedly mounted on the bottom surface of the chassis 109, the docking seat 2 is rotatably connected with a rotating shaft 201, the rotating shaft 201 is fixedly connected to the connecting seat 202, the connecting seat 202 is fixedly mounted on a fixed plate 203, one side of the fixed plate 203 is fixedly connected with a pair of fixed rods 204, the other end of the pair of fixed rods 204 is fixedly connected with a first baffle 205, the inner side of the fixed plate 203 is fixedly connected with a toothed plate 206, a pair of fixed rods 204 are slidably connected with a slider 207, and the inner side of the slider 207 is fixed The limiting seat 208 is connected, and a positioning plate 209 is fixedly connected to the limiting seat 208. The middle position of the top surface of the positioning plate 209 is fixedly connected to an articulated seat 210. The articulated seat 210 is rotatably connected to a linkage plate 211. The other end of the linkage plate 211 is rotatably connected to a collar 212. The collar 212 is slidably connected to the articulated seat 210. A through groove 3 is provided on the limiting seat 208. A sliding seat 301 is slidably connected inside the through groove 3. One end of the sliding seat 301 is slidably connected to a sliding rod 302. The bottom end of the sliding rod 302 is fixedly connected to a first shaft seat 303. The first shaft seat 303 is fixedly connected to the first shaft seat 303. The top of the slide bar 302 is fixedly connected to one side of the limit seat 208, the second baffle 304 is fixedly connected to the top of the slide bar 302, the first spring 305 is sleeved on the slide bar 302, the two ends of the first spring 305 are respectively fixedly connected to one side of the slide seat 301 and one side of the second baffle 304, the other end of the slide seat 301 is fixedly connected to an adjustment block 306, the bottom surface of the adjustment block 306 is fixedly connected to a base 307, the bottom surface of the base 307 is provided with a plurality of groups of first latch teeth 308, the first latch teeth 308 are clamped on the tooth plate 206, the top surface of the adjustment block 306 is fixedly connected to a top seat 309, and the top seat 309 is fixedly connected to the top seat 309. A limit shaft 310 is fixedly connected on 9, and pull plates 311 are rotatably connected at both ends of the limit shaft 310. A pull rod 312 is fixedly connected between the top ends of the pull plates 311. A pair of second shaft seats 313 are fixedly connected to the top surface of the limit seat 208, and an adjusting shaft 314 is rotatably connected between the pair of second shaft seats 313. A sleeve 315 is fixedly connected to the adjusting shaft 314, and a pull block 316 is fixedly connected to the surface of the sleeve 315. A clamping plate 317 is fixedly connected to the surface of the sleeve 315, and a movable groove 318 is opened on the clamping plate 317, and the inside of the movable groove 318 is slidably connected to the pull rod 312.

[0023] Specifically, when the slider 207 is moved, the limit seat 208 is fixedly connected to the slider 207, and the pull block 316 on the limit seat 208 is pulled. The pull of the pull block 316 causes the adjustment shaft 314 on the sleeve 315 to rotate on the second shaft seat 313. A clamping plate 317 is fixedly connected to the sleeve 315, and a movable groove 318 is provided inside the clamping plate 317. The pull rod 312 slides inside the movable groove 318 through the rotation of the sleeve 315, and then the pull rod 312 drives the top seat 309 on the limit shaft 310 to move upward through the pull plate 311. The movement of the top seat 309 causes the slide seat 301 on the adjustment block 306 to slide on the slide rod 302. The movement of the adjustment block 306 drives the first clamping tooth 308 to disengage from the adjustment block 306 through the base 307, thereby facilitating the movement of the slider 207 as a whole on the fixed rod 204, thereby facilitating the overall height adjustment of the surveying instrument body 1.

[0024] As an implementation method in this embodiment, the limiting component includes an adjustment seat 4 fixedly installed on the slider 207, the adjustment seat 4 is rotatably connected to the main shaft 401, the middle position of the main shaft 401 is fixedly connected to the gear 402, the main shaft 401 is fixedly connected to the clamping seat 403, the clamping seat 403 is fixedly connected to the support plate 404, the support plate 404 is provided with a guide groove 405, the other end of the support plate 404 is fixedly connected to the docking plate 406, the bottom surface of the docking plate 406 is fixedly connected to the triangular block 407, the surface of the support plate 404 is fixedly connected to the L-shaped plate 408, the inside of the adjustment seat 4 is fixedly connected to a pair of positioning rods 5, and the pair of positioning rods 5 slide on A sleeve seat 501 is connected, and a pair of positioning rods 5 are sleeved with a second spring 502, and the two ends of the second spring 502 are respectively fixedly connected to the inner wall of the adjusting seat 4 and the bottom surface of the sleeve seat 501, and the sleeve seat 501 is fixedly connected to the limit block 503, and the top surface of the limit block 503 is provided with a plurality of groups of second latch teeth 504, and the second latch teeth 504 are clamped on the gear 402, and the bottom surface of the limit block 503 is fixedly connected to the extrusion block 505, and the bottom surface of the extrusion block 505 is fitted with a camshaft 506, and the camshaft 506 is fixedly connected to the adjusting rod 507, and the adjusting rod 507 is rotatably connected to the third shaft seat 508, and one end of the adjusting rod 507 is fixedly connected to the adjusting disk 509.

[0025] Specifically, when the support plate 404 is rotated, the adjusting disk 509 is rotated, and the rotation of the adjusting disk 509 drives the camshaft 506 on the adjusting rod 507 to rotate. The camshaft 506 is attached to the bottom surface of the extrusion block 505. The rotation of the camshaft 506 causes the limit block 503 on the extrusion block 505 to move downward as a whole, thereby facilitating the sliding of the sleeve 501 on the positioning rod 5. A plurality of groups of second latch teeth 504 are fixedly connected to the limit block 503. The second latch teeth 504 are disengaged from the gear 402 through the movement of the limit block 503, thereby facilitating the rotation of the support plate 404 as a whole.

[0026] As an implementation method in this embodiment, the docking assembly includes a side plate 6 fixedly installed on the fixed plate 203, the side plate 6 is fixedly connected to a support foot 601, the support foot 601 is fixedly connected to a pair of arm rods 602, the pair of arm rods 602 are slidably connected to a box body 603, the box body 603 is provided with a slot 604, one end of the pair of arm rods 602 is fixedly connected to a third baffle 605, the pair of arm rods 602 is sleeved with a third spring 606, the two ends of the third spring 606 are respectively fixedly connected to one side of the box body 603 and one side of the third baffle 605, the inside of the box body 603 is fixedly connected to a side seat 607, and the side seat 607 is fixedly connected to a pull column 608.

[0027] Specifically, the support plate 404 is rotated 180 degrees, and an L-shaped plate 408 is fixedly connected to the support plate 404. The L-shaped plate 408 presses the arc surface on the box body 603 through the rotation of the support plate 404. A clamping slot 604 is provided on the box body 603. When the box body 603 is pressed by the L-shaped plate 408, the box body 603 slides on the arm 602, so as to facilitate pulling the third spring 606. When the L-shaped plate 408 moves to the opening of the clamping slot 604, the clamping slot 604 is clamped on the L-shaped plate 408 by the elastic force of the third spring 606, so that the support plate 404 is folded and stored as a whole for easy carrying.

[0028] The working principle of the present invention is as follows: when the slider 207 is moved, the limited seat 208 is fixedly connected to the slider 207, and the pull block 316 on the limited seat 208 is pulled. The pull of the pull block 316 causes the adjusting shaft 314 on the sleeve 315 to rotate on the second shaft seat 313. A clamping plate 317 is fixedly connected to the sleeve 315, and a movable groove 318 is provided inside the clamping plate 317. The pull rod 312 slides inside the movable groove 318 through the rotation of the sleeve 315, and then the pull rod 312 drives the top seat 309 on the limited shaft 310 to move upward through the pull plate 311. The movement of the top seat 309 causes the slide seat 301 on the adjusting block 306 to slide on the slide rod 302. The movement of the adjusting block 306 drives the first clamping tooth 308 to disengage from the adjusting block 306 through the base 307, so that the slider 207 is moved on the fixed rod 204 as a whole, so as to adjust the overall height of the surveying instrument body 1. When the support plate 404 is rotated, the adjusting disk 509 is rotated, and the rotation of the adjusting disk 509 drives the camshaft 506 on the adjusting rod 507 to rotate. The camshaft 506 is attached to the bottom surface of the extrusion block 505. The rotation of the camshaft 506 causes the limit block 503 on the extrusion block 505 to move downward as a whole, thereby facilitating the sleeve 501 to slide on the positioning rod 5. A plurality of groups of second latch teeth 504 are fixedly connected to the limit block 503. The second latch teeth 504 are disengaged from the gear 402 by the movement of the limit block 503, thereby facilitating the overall rotation of the support plate 404. The support plate 404 is rotated 180 degrees, and an L-shaped plate 408 is fixedly connected to the support plate 404. The L-shaped plate 408 presses the arc surface on the box body 603 through the rotation of the support plate 404. A clamping slot 604 is provided on the box body 603. When the box body 603 is pressed by the L-shaped plate 408, the box body 603 slides on the arm 602, so that the third spring 606 is pulled. When the L-shaped plate 408 moves to the opening of the clamping slot 604, the clamping slot 604 is clamped on the L-shaped plate 408 by the elastic force of the third spring 606, so that the support plate 404 is folded and stored as a whole for easy carrying.

[0029] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable outdoor surveying instrument for geographical surveying, comprising a surveying instrument body (1), characterized in that: A plug rod (101) is fixedly connected to the middle of the bottom surface of the surveying instrument body (1), the bottom end of the plug rod (101) is inserted into the inside of the sleeve rod (102), the plug rod (101) is fixedly mounted inside the sleeve rod (102) by means of a bolt (103), the bottom end of the sleeve rod (102) is fixedly connected to a socket (104), a tray (105) is provided on the bottom surface of the socket (104), a slot (106) is provided on the tray (105), the socket (104) is slidably connected inside the slot (106), the tray (105) is fixedly mounted on the top surface of a docking plate (107), a plurality of groups of fixing columns (108) are fixedly connected to the docking plate (107), the bottom ends of the fixing columns (108) are fixedly connected to a chassis (109), and a limiting rod (110) is fixedly connected to the middle of the bottom surface of the chassis (109); It also comprises a support component, a limit component and a docking component, wherein the support component is arranged at the bottom of the chassis (109) for use in conjunction with the surveying instrument body (1) as a whole, the limit component is mounted on the slider (207) for fixed use, and the docking component is arranged on the slider (207) for folding the support plate (404) for use.

2. A portable outdoor surveying instrument for geographic surveying and mapping according to claim 1, characterized in that: The support assembly comprises a plurality of docking seats (2) fixedly mounted on the bottom surface of the chassis (109), the docking seats (2) being rotatably connected to a rotating shaft (201), the rotating shaft (201) being fixedly connected to a connecting seat (202), the connecting seat (202) being fixedly mounted on a fixing plate (203), a pair of fixing rods (204) being fixedly connected to one side of the fixing plate (203), and a first blocking sheet (205) being fixedly connected to the other ends of the pair of fixing rods (204).

3. A portable outdoor surveying instrument for geographic surveying and mapping according to claim 2, characterized in that: A toothed plate (206) is fixedly connected to the inner side of the fixed plate (203); a slider (207) is slidably connected between a pair of fixed rods (204); a limited position seat (208) is fixedly connected to the inner side of the slider (207); a positioning plate (209) is fixedly connected to the limited position seat (208); a hinge seat (210) is fixedly connected to the middle of the top surface of the positioning plate (209); a linkage plate (211) is rotatably connected to the hinge seat (210); the other end of the linkage plate (211) is rotatably connected to a collar (212); and the collar (212) is slidably connected to the hinge seat (210).

4. A portable outdoor surveying instrument for geographic surveying and mapping according to claim 3, characterized in that: The limit seat (208) is provided with a through slot (3), the interior of the through slot (3) is slidably connected to a slide seat (301), one end of the slide seat (301) is slidably connected to a slide rod (302), the bottom end of the slide rod (302) is fixedly connected to a first shaft seat (303), the first shaft seat (303) is fixedly connected to one side of the limit seat (208), the top end of the slide rod (302) is fixedly connected to a second baffle (304), the slide rod (302) is sleeved with a first spring (305), and the two ends of the first spring (305) are respectively fixedly connected to one side of the slide seat (301) and one side of the second baffle (304).

5. A portable outdoor surveying instrument for geographic surveying and mapping according to claim 4, characterized in that: The other end of the slide seat (301) is fixedly connected to an adjustment block (306), the bottom surface of the adjustment block (306) is fixedly connected to a base (307), the bottom surface of the base (307) is provided with a plurality of groups of first latching teeth (308), and the first latching teeth (308) are latched on the tooth plate (206).

6. A portable outdoor surveying instrument for geographical surveying and mapping according to claim 5, characterized in that: The top surface of the adjustment block (306) is fixedly connected to a top seat (309), a limit shaft (310) is fixedly connected to the top seat (309), both ends of the limit shaft (310) are rotatably connected to pull plates (311), a pull rod (312) is fixedly connected between the top ends of the pull plates (311), a pair of second shaft seats (313) are fixedly connected to the top surface of the limit seat (208), an adjustment shaft (314) is rotatably connected between the pair of second shaft seats (313), a sleeve (315) is fixedly connected to the adjustment shaft (314), a pull block (316) is fixedly connected to the surface of the sleeve (315), a clamping plate (317) is fixedly connected to the surface of the sleeve (315), a movable groove (318) is provided on the clamping plate (317), and the inside of the movable groove (318) is slidably connected to the pull rod (312).

7. The portable outdoor surveying instrument for geographic surveying and mapping according to claim 3, characterized in that: The limit assembly comprises an adjustment seat (4) fixedly mounted on the slider (207); a main shaft (401) is rotatably connected to the adjustment seat (4); a gear (402) is fixedly connected to the middle of the main shaft (401); a clamping seat (403) is fixedly connected to the main shaft (401); a support plate (404) is fixedly connected to the clamping seat (403); a guide groove (405) is provided on the support plate (404); a docking plate (406) is fixedly connected to the other end of the support plate (404); a triangular block (407) is fixedly connected to the bottom surface of the docking plate (406); and an L-shaped plate (408) is fixedly connected to the surface of the support plate (404).

8. A portable outdoor surveying instrument for geographical surveying and mapping according to claim 7, characterized in that: A pair of positioning rods (5) are fixedly connected inside the adjustment seat (4), a sleeve seat (501) is slidably connected to the pair of positioning rods (5), a second spring (502) is sleeved on the pair of positioning rods (5), two ends of the second spring (502) are respectively fixedly connected to the inner wall of the adjustment seat (4) and the bottom surface of the sleeve seat (501), the sleeve seat (501) is fixedly connected to the limit block (503), and the top surface of the limit block (503) is provided with a plurality of groups of second springs (502). Two latching teeth (504), wherein the second latching teeth (504) are latched on the gear (402); the bottom surface of the limit block (503) is fixedly connected to an extrusion block (505); the bottom surface of the extrusion block (505) is fitted with a cam shaft (506); the cam shaft (506) is fixedly connected to an adjustment rod (507); the adjustment rod (507) is rotatably connected to a third shaft seat (508); and one end of the adjustment rod (507) is fixedly connected to an adjustment disk (509).

9. A portable outdoor surveying instrument for geographical surveying and mapping according to claim 8, characterized in that: The docking assembly comprises a side plate (6) fixedly mounted on the fixed plate (203), a support leg (601) fixedly connected to the side plate (6), a pair of arm rods (602) fixedly connected to the support leg (601), a box body (603) slidably connected to the pair of arm rods (602), and a slot (604) is provided on the box body (603).

10. A portable outdoor surveying instrument for geographical surveying and mapping according to claim 9, characterized in that: A third baffle (605) is fixedly connected to one end of a pair of arm rods (602), a third spring (606) is sleeved on the pair of arm rods (602), two ends of the third spring (606) are respectively fixedly connected to one side of the box body (603) and one side of the third baffle (605), a side seat (607) is fixedly connected inside the box body (603), and a pull column (608) is fixedly connected to the side seat (607).

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