Portable geographic information acquisition device for emergency surveying and mapping

Abstract

The invention discloses a portable geographic information acquisition device for emergency surveying and mapping, and relates to the technical field of surveying and mapping geographic information and field reconnaissance, the portable geographic information acquisition device comprises a first arc-shaped ruler and a second arc-shaped ruler, the surface edge positions of the first arc-shaped ruler and the second arc-shaped ruler are both provided with scale marks, the second arc-shaped ruler is provided with a sliding groove, and the sliding groove is provided with a sliding groove. A sliding groove is formed in one end of the first arc-shaped ruler, a through groove is formed in one end of the second arc-shaped ruler, the sliding groove is communicated with the through groove, a sliding shaft is slidably connected into the sliding groove, and the sliding shaft is fixedly connected to one end of the first arc-shaped ruler. The device is reasonable in structure, the first arc-shaped ruler and the second arc-shaped ruler on the auxiliary assembly are used in cooperation, so that angle measurement work is facilitated, the angle between the first arm plate and the second arm plate can be adjusted in an applicable mode through the limiting assembly, and finally the distance measuring assembly is taken out to measure the distance; and surveying and mapping work can be carried out without a plurality of measuring tools.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of surveying and mapping geographic information and field reconnaissance, and particularly relates to a portable geographic information acquisition device for emergency surveying and mapping. BACKGROUND

[0002] In land planning, as a basic measuring tool, although its direct application may not be as widely used as professional surveying and mapping equipment, it still plays an important role in certain specific links or auxiliary work. For example: preliminary survey: In the preliminary stage of land planning, it is necessary to conduct a preliminary survey and understanding of the planning area. At this time, the tape measure can be used to measure the basic dimensions of the planning area, such as length, width, etc., to provide basic data for subsequent planning work. On-site calibration: During the actual operation of land planning, on-site calibration is required to ensure the accuracy of the planning scheme. The tape measure can be used to calibrate the boundaries, important nodes, etc. of the planning area to provide accurate guidance for the implementation of the planning scheme. Auxiliary measurement: In addition to professional surveying and mapping equipment, the tape measure can also be used as an auxiliary measurement tool to verify or supplement professional surveying and mapping data. For example, when measuring terrain undulations, slope, etc., the tape measure can be used in conjunction with other tools to make rough estimates to improve measurement efficiency.

[0003] The patent with publication number CN118408438B discloses a portable measuring device, which includes a top plate, two side plates fixedly connected to the sides of the top plate, a scale disc rotatably installed between the two side plates, a scale band wound inside the scale disc, a pull buckle fixedly connected to one end of the scale band, a connection plate fixedly connected to the front end of the top plate, a carrying handle fixedly connected to the upper end of the top plate and the connection plate, a guide frame rotatably connected to the lower end of the connection plate through a rotating mechanism, and two groups of wheel bodies rotatably installed on the side of the guide frame away from the connection plate. Each group of wheel bodies is arranged to be not less than two and is distributed along a straight line from front to back, and the two groups of wheel bodies are respectively distributed close to the upper and lower edges of the guide frame. Compared with traditional large tape measures, the measuring device is convenient and easy to pull, has the function of guiding the movement along the surface of the measured surface, improves the measurement accuracy, can adapt to different inclined surfaces such as wall surfaces and slopes for adaptive measurement, and improves the convenience of storage and storage.

[0004] There are still some problems in existing measurement data collection. When the angles of some buildings need to be measured, most of them use angle measuring devices to measure, and the length of the distance is also measured during measurement, so as to facilitate the collection of multiple groups of data. However, different tools need to be used when measuring angles and lengths, which is not convenient for carrying work. SUMMARY

[0005] The purpose of this invention is to provide a portable geographic information acquisition device for emergency mapping. It facilitates angle measurement by using the first and second arc-shaped rulers on the auxiliary components, adjusts the angle between the first and second arm plates by the limiting component, and finally removes the distance measuring component to measure the distance without the need for multiple measuring tools.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable geographic information acquisition device for emergency mapping, comprising a first arc-shaped ruler and a second arc-shaped ruler, both having scale marks on their surface edges; a sliding groove on the second arc-shaped ruler, with a through groove at one end; the sliding groove and the through groove being interconnected; a sliding shaft slidably connected inside the sliding groove; the sliding shaft being fixedly connected to one end of the first arc-shaped ruler; the other end of the first arc-shaped ruler being rotatably connected to a first rotating shaft; and first arm plates fixedly connected to both ends of the first rotating shaft; further comprising an auxiliary component, a limiting component, and a distance measuring component; the auxiliary component being disposed on the first arm plate for use in conjunction with the first and second arc-shaped rulers; the limiting component being disposed on the inner side of the first arm plate for fixing the angle of the second arm plate; and the distance measuring component being disposed on the inner wall of the second arm plate for measuring distance.

[0007] Preferably, the auxiliary component includes a main shaft rotatably connected to the other end of the first arm plate, with a second arm plate fixedly connected to both ends of the main shaft, a second rotating shaft fixedly connected to the other end of the second arm plate, and one end of the second rotating shaft rotatably connected to the other end of the second arc-shaped ruler.

[0008] Preferably, a docking post is fixedly connected to the center of the spindle axis, an indicator plate is rotatably connected to the docking post, an observation port is opened at the other end of the indicator plate, a fixing post is fixedly connected to the other end surface of the indicator plate, and an arrow is fixedly connected to the top of the fixing post.

[0009] Preferably, the limiting component includes a liner fixedly installed on the inner wall of the first arm plate, a rod movably inserted at the middle position of the liner, a limiting block fixedly connected to one end of the rod, an arc-shaped groove on the side of the limiting block away from the rod, and several sets of locking teeth provided on the inner wall of the arc-shaped groove, the locking teeth locking onto a gear, and the gear fixedly installed at the middle position of the main shaft.

[0010] Preferably, a collar is fixedly connected to the insertion rod, and a first spring is sleeved on the insertion rod, with both ends of the first spring fixedly connected to one side of the liner and one side of the collar, respectively.

[0011] Preferably, the other end of the inserting rod is rotationally connected with a counter joint, the surface of the counter joint is fixedly connected with a clamping rod, the lining plate is fixedly connected with a side plate, the side plate is provided with a movable slot, the side plate is provided with a clamping slot, the movable slot and the clamping slot are in communication with each other, and one end of the clamping rod is slidably connected in the interior of the movable slot.

[0012] Preferably, the ranging assembly comprises a positioning column fixedly connected to the inner wall of the second arm plate, a sleeve is rotationally connected to the positioning column, a pair of receiving plates are fixedly connected to the surface of the sleeve, guide slots are formed in the pair of receiving plates, limit plates are fixedly connected to the surface of the pair of receiving plates, and a plurality of groups of limit slots are formed in the top of the limit plates.

[0013] Preferably, a sliding block is slidably connected in the interior of the guide slot, the sliding block is fixedly connected to a fixed block, an installation plate is fixedly connected to the fixed block, a pair of telescopic plates are fixedly connected to the other side of the installation plate, a driven shaft is rotationally connected to the other end of the pair of telescopic plates, rollers are fixedly connected to the two ends of the driven shaft, and a plurality of turns of angle sensors are arranged between the inner walls of the telescopic plates.

[0014] Preferably, a fixed seat is fixedly installed at the middle of the surface of the fixed block, a cross rod is rotationally connected to the fixed seat, linkage plates are rotationally connected to the two ends of the cross rod, a second spring is sleeved on the cross rod, the two ends of the second spring are fixedly connected to one side of the fixed seat and one side of the linkage plate, respectively, a side rod is fixedly connected to the other end of the linkage plate, and the side rod is clamped in the interior of the limit slot.

[0015] Preferably, an adjusting slot is formed in the linkage plate, a push rod is slidably connected in the interior of the adjusting slot, a pair of adjusting plates are rotationally connected to the middle end of the push rod, the other end of the pair of adjusting plates is fixedly connected to a driven rod, the two ends of the driven rod are rotationally connected to the inner walls of the telescopic plates, a pull plate is fixedly connected to the middle end of the driven rod, and a handle is fixedly connected to the other end of the pull plate.

[0016] In summary, the present application has the following advantages: 1. The structure of the present application is reasonable, when the angle of an object is measured, the first arc-shaped ruler and the second arc-shaped ruler are attached to the surface of the object, then the indicating plate is rotated, the arrow on the fixed column is moved through the rotation of the indicating plate, the position of the arrow on the scale marks on the first arc-shaped ruler and the second arc-shaped ruler can be observed through the observation port, and the measurement data can be obtained.

[0017] 2、The second arm plate can be rotated when measuring the angle in a narrow environment, the clamping rod is first pulled, the pulling of the clamping rod drives the insertion rod to move through the joint, then the clamping rod is rotated and clamped in the clamping groove, so that the position of the insertion rod is fixed, the clamping teeth on the limiting block are disengaged from the gear through the movement of the insertion rod, then the second arm plate is rotated to a suitable angle, the clamping rod is moved into the movable groove, the clamping teeth are clamped on the gear again through the elastic force of the first spring, so that the angle of the second arm plate is fixed.

[0018] 3、The second arm plate is rotated as a whole and moved out of the second arm plate, then the handle is pulled to rotate the driven rod when the telescopic plate is pulled out, the two ends of the push rod slide in the adjusting groove through the adjusting plate when the driven rod rotates, then the cross rod at one end of the linkage plate rotates to move the side rod out of the limiting slot, so that the length of the telescopic plate is adjusted according to the use, the telescopic plate is conveniently stored, and the portability of the first arc ruler as a whole is increased. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a schematic view of the three-dimensional structure of the first arc ruler of the present application; Figure 2 is a schematic view of the side view of the three-dimensional structure of the first arc ruler of the present application; Figure 3 is a schematic view of the partial cross-sectional three-dimensional structure of the first arm plate of the present application; Figure 4 is a schematic view of the three-dimensional structure of the second arm plate of the present application; Figure 5 is a schematic view of the three-dimensional structure of the storage plate of the present application; Figure 6 is a schematic view of the three-dimensional structure of the telescopic plate of the present application; Figure 7 is a schematic view of the three-dimensional structure of the sliding block of the present application.

[0021] In the figure: 1, the first arc ruler; 101, the second arc ruler; 102, the sliding groove; 103, the through groove; 104, the sliding shaft; 105, the first rotating shaft; 106, the first arm plate; 2, the main shaft; 201, the second arm plate; 202, the second rotating shaft; 203, the butt joint column; 204, the indicating plate; 205, the observation port; 206, the fixed column; 207, the arrow; 3, the lining plate; 301, the insertion rod; 302, the limiting block; 303, the arc-shaped groove; 304, the clamping tooth; 305, the gear; 306, the sleeve ring; 307, the first spring; 308, the butt joint; 309, the clamping rod; 310, the side plate; 311, the movable groove; 312, the clamping groove; 4, the positioning column; 401, the sleeve; 402, the storage plate; 403, the guide groove; 404, the limiting plate; 405, the limiting groove; 406, the sliding block; 407, the fixed block; 408, the mounting plate; 409, the telescopic plate; 410, the driven shaft; 411, the roller; 412, the multi-turn angle sensor; 5, the fixed seat; 501, the cross rod; 502, the linkage plate; 504, the second spring; 505, the side rod; 506, the adjusting groove; 507, the push rod; 508, the adjusting plate; 509, the driven rod; 510, the pull plate; 511, the handle. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] Embodiment: Reference Figure 1 Figure 7 The portable geographic information acquisition device for emergency mapping shown comprises a first arc ruler 1 and a second arc ruler 101, the surface edge portions of the first arc ruler 1 and the second arc ruler 101 are provided with scale marks, the second arc ruler 101 is provided with a sliding groove 102, the second arc ruler 101 is provided with a through groove 103 at one end, the sliding groove 102 and the through groove 103 are in communication with each other, a sliding shaft 104 is slidably connected in the sliding groove 102, the sliding shaft 104 is fixedly connected at one end of the first arc ruler 1, the other end of the first arc ruler 1 is rotatably connected to a first rotating shaft 105, and both ends of the first rotating shaft 105 are fixedly connected with a first arm plate 106; further comprising an auxiliary assembly, a limiting assembly and a distance measuring assembly, the auxiliary assembly is arranged on the first arm plate 106 for use in cooperation with the first arc ruler 1 and the second arc ruler 101, the limiting assembly is arranged on the inner side of the first arm plate 106 for fixing the angle of a second arm plate 201, and the distance measuring assembly is arranged on the inner wall of the second arm plate 201 for measuring distance.

[0024] ​Specifically, it needs to be explained here that the driven shaft 410 rotates on the surface of the object, so that the multi-turn angle sensor 412 can measure the work, and the working principle is cited by the prior art, and will not be described in detail here.

[0025] As an embodiment of the present embodiment, the auxiliary assembly comprises a main shaft 2 rotatably connected to the other end of the first arm plate 106, and the two ends of the main shaft 2 are fixedly connected with a second arm plate 201. The other end of the second arm plate 201 is fixedly connected with a second rotating shaft 202, one end of the second rotating shaft 202 is rotatably connected with the other end of the second arc ruler 101, and the center of the axis of the main shaft 2 is fixedly connected with a docking column 203. The docking column 203 is rotatably connected with an indicating plate 204, and the other end of the indicating plate 204 is provided with an observation port 205. The other end surface of the indicating plate 204 is fixedly connected with a fixed column 206, and the top end of the fixed column 206 is fixedly connected with an arrow 207.

[0026] Specifically, when measuring the angle of the object, the first arc ruler 1 and the second arc ruler 101 are attached to the surface of the object, and then the indicating plate 204 is rotated, the arrow 207 on the fixed column 206 is moved by the rotation of the indicating plate 204, and the arrow 207 is observed to be located on the scale mark on the first arc ruler 1 and the second arc ruler 101 through the observation port 205, so as to obtain the measurement data.

[0027] As an embodiment of the present embodiment, the limiting assembly comprises a lining plate 3 fixedly installed on the inner wall of the first arm plate 106, and an insertion rod 301 movably inserted in the middle position of the lining plate 3. One end of the insertion rod 301 is fixedly connected with a limiting block 302, and the side away from the insertion rod 301 of the limiting block 302 is provided with an arc-shaped groove 303. A plurality of sets of clamping teeth 304 are arranged on the inner wall of the arc-shaped groove 303, the clamping teeth 304 are clamped on a gear 305, the gear 305 is fixedly installed at the middle end position of the main shaft 2, a sleeve ring 306 is fixedly connected on the insertion rod 301, a first spring 307 is sleeved on the insertion rod 301, and the two ends of the first spring 307 are fixedly connected with one side of the lining plate 3 and one side of the sleeve ring 306 respectively. The other end of the insertion rod 301 is rotatably connected with a docking head 308, the surface of the docking head 308 is fixedly connected with a clamping rod 309, a side plate 310 is fixedly connected on the lining plate 3, an active slot 311 is formed on the side plate 310, a clamping groove 312 is formed on the side plate 310, the active slot 311 and the clamping groove 312 are in communication with each other, and one end of the clamping rod 309 is slidably connected in the inner part of the active slot 311.

[0028] Specifically, when measuring the angle in a narrow environment, the second arm plate 201 can be rotated, the clamping rod 309 is first pulled, the pulling of the clamping rod 309 drives the insertion rod 301 to move through the joint 308, and then the clamping rod 309 is rotated and clamped in the clamping groove 312, so that the position of the insertion rod 301 is fixed. The clamping teeth 304 on the limiting block 302 are disengaged from the gear 305 through the movement of the insertion rod 301, then the second arm plate 201 is rotated by an appropriate angle, and then the clamping rod 309 is moved into the movable slot 311, so that the clamping teeth 304 are clamped on the gear 305 again through the elastic force of the first spring 307, thereby fixing the angle of the second arm plate 201.

[0029] As an embodiment in the present embodiment, the distance measuring assembly comprises a positioning column 4 fixedly connected to the inner wall of the second arm plate 201, a sleeve 401 rotatably connected to the positioning column 4, a pair of receiving plates 402 fixedly connected to the surface of the sleeve 401, a guide groove 403 formed in the pair of receiving plates 402, a limiting plate 404 fixedly connected to the surface of the pair of receiving plates 402, a plurality of limiting grooves 405 formed in the top of the limiting plate 404, a sliding block 406 slidably connected to the inside of the guide groove 403, the sliding block 406 being fixedly connected to a fixed block 407, an installation plate 408 fixedly connected to the fixed block 407, a pair of telescopic plates 409 fixedly connected to the other side of the installation plate 408, a driven shaft 410 rotatably connected to the other end of the pair of telescopic plates 409, a plurality of rollers 411 fixedly connected to the two ends of the driven shaft 410, a plurality of angle sensors 412 arranged between the inner walls of the telescopic plates 409, a fixed seat 5 fixedly installed on the surface of the middle part of the fixed block 407, a cross rod 501 rotatably connected to the fixed seat 5, a linkage plate 502 rotatably connected to the two ends of the cross rod 501, a second spring 504 sleeved on the cross rod 501, the two ends of the second spring 504 being fixedly connected to one side of the fixed seat 5 and one side of the linkage plate 502 respectively, a side rod 505 fixedly connected to the other end of the linkage plate 502, the side rod 505 being clamped in the limiting groove 405, an adjusting groove 506 formed in the linkage plate 502, a push rod 507 slidably connected to the inside of the adjusting groove 506, a pair of adjusting plates 508 rotatably connected to the middle end position of the push rod 507, the other end of the pair of adjusting plates 508 being fixedly connected to a driven rod 509, the two ends of the driven rod 509 being rotatably connected to the inner walls of the telescopic plates 409, a pull plate 510 fixedly connected to the middle end position of the driven rod 509, and a handle 511 fixedly connected to the other end of the pull plate 510.

[0030] Specifically, the receiving plate 402 is rotated as a whole to move out of the second arm plate 201, then when the telescopic plate 409 is pulled out according to the use, the handle 511 is pulled to drive the driven rod 509 to rotate through the pull plate 510, the rotation of the driven rod 509 drives the two ends of the push rod 507 to slide in the adjusting groove 506 through the adjusting plate 508, then the cross rod 501 at one end of the linkage plate 502 is rotated to move the side rod 505 out of the limiting groove 405, so that the length of the telescopic plate 409 is adjusted according to the use, and the telescopic plate 409 is conveniently stored, thereby increasing the portability of the first arc ruler 1 as a whole.

[0031] The working principle of the present application is that when the angle of an object is measured, the first arc ruler 1 and the second arc ruler 101 are attached to the surface of the object, then the indicating plate 204 is rotated, the arrow 207 on the fixed column 206 is moved through the rotation of the indicating plate 204, and the position of the arrow 207 on the scale mark on the first arc ruler 1 and the second arc ruler 101 can be observed through the observation port 205, so that the measurement data is obtained. When the angle is measured in a narrow environment, the second arm plate 201 is rotated, the clamping rod 309 is first pulled, the clamping rod 309 is moved through the joint 308 to drive the insertion rod 301, then the clamping rod 309 is rotated and clamped in the clamping groove 312, so that the position of the insertion rod 301 is fixed, the clamping teeth 304 on the limiting block 302 are disengaged from the gear 305 through the movement of the insertion rod 301, then the second arm plate 201 is rotated to the appropriate angle, the clamping rod 309 is moved into the movable groove 311, and the clamping teeth 304 are clamped on the gear 305 through the elastic force of the first spring 307, so that the angle of the second arm plate 201 is fixed. The receiving plate 402 is rotated as a whole to move out of the second arm plate 201, then when the telescopic plate 409 is pulled out according to the use, the handle 511 is pulled to drive the driven rod 509 to rotate through the pull plate 510, the rotation of the driven rod 509 drives the two ends of the push rod 507 to slide in the adjusting groove 506 through the adjusting plate 508, then the cross rod 501 at one end of the linkage plate 502 is rotated to move the side rod 505 out of the limiting groove 405, so that the length of the telescopic plate 409 is adjusted according to the use, and the telescopic plate 409 is conveniently stored, thereby increasing the portability of the first arc ruler 1 as a whole.

[0032] Finally, it should be noted that the above is only the preferred embodiment of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified to the technical solution recorded in the foregoing embodiments, or equivalent replacement of some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A portable geographic information acquisition device for emergency mapping, comprising a first arc-shaped ruler (1) and a second arc-shaped ruler (101), characterized in that, Both the first arc-shaped ruler (1) and the second arc-shaped ruler (101) have scale marks on their surface edges. The second arc-shaped ruler (101) has a sliding groove (102) and a through groove (103) at one end. The sliding groove (102) and the through groove (103) are interconnected. A sliding shaft (104) is slidably connected inside the sliding groove (102). The sliding shaft (104) is fixedly connected to one end of the first arc-shaped ruler (1). The other end of the first arc-shaped ruler (1) is rotatably connected to a first rotating shaft (105). A first arm plate (106) is fixedly connected to both ends of the first rotating shaft (105). It also includes an auxiliary component, a limiting component, and a distance measuring component. The auxiliary component is disposed on the first arm plate (106) for use in conjunction with the first arc ruler (1) and the second arc ruler (101). The limiting component is disposed on the inner side of the first arm plate (106) for fixing the angle of the second arm plate (201). The distance measuring component is disposed on the inner wall of the second arm plate (201) for measuring distance.

2. The portable geographic information acquisition device for emergency mapping according to claim 1, characterized in that: The auxiliary component includes a main shaft (2) rotatably connected to the other end of the first arm plate (106), with a second arm plate (201) fixedly connected to both ends of the main shaft (2), and a second rotating shaft (202) fixedly connected to the other end of the second arm plate (201). One end of the second rotating shaft (202) is rotatably connected to the other end of the second arc-shaped ruler (101).

3. A portable geographic information acquisition device for emergency mapping according to claim 2, characterized in that: A docking post (203) is fixedly connected to the center of the axis of the main shaft (2). An indicator plate (204) is rotatably connected to the docking post (203). An observation port (205) is opened at the other end of the indicator plate (204). A fixing post (206) is fixedly connected to the surface of the other end of the indicator plate (204). An arrow (207) is fixedly connected to the top of the fixing post (206).

4. A portable geographic information acquisition device for emergency mapping according to claim 2, characterized in that: The limiting component includes a liner (3) fixedly installed on the inner wall of the first arm plate (106). A rod (301) is movably inserted into the middle position of the liner (3). One end of the rod (301) is fixedly connected to a limiting block (302). An arc groove (303) is provided on the side of the limiting block (302) away from the rod (301). Several sets of locking teeth (304) are provided on the inner wall of the arc groove (303). The locking teeth (304) are locked on the gear (305). The gear (305) is fixedly installed at the middle position of the main shaft (2).

5. A portable geographic information acquisition device for emergency mapping according to claim 4, characterized in that: A collar (306) is fixedly connected to the insert rod (301), and a first spring (307) is sleeved on the insert rod (301). The two ends of the first spring (307) are fixedly connected to one side of the liner (3) and one side of the collar (306), respectively.

6. A portable geographic information acquisition device for emergency mapping according to claim 5, characterized in that: The other end of the insertion rod (301) is rotatably connected to a connector (308), and a locking rod (309) is fixedly connected to the surface of the connector (308). A side plate (310) is fixedly connected to the liner (3). A movable groove (311) is provided on the side plate (310), and a locking groove (312) is provided on the side plate (310). The movable groove (311) and the locking groove (312) are interconnected. One end of the locking rod (309) is slidably connected inside the movable groove (311).

7. A portable geographic information acquisition device for emergency mapping according to claim 2, characterized in that: The ranging component includes a positioning post (4) fixedly connected to the inner wall of the second arm plate (201). A sleeve (401) is rotatably connected to the positioning post (4). A pair of storage plates (402) are fixedly connected to the surface of the sleeve (401). A guide groove (403) is provided on the pair of storage plates (402). A limiting plate (404) is fixedly connected to the surface of the pair of storage plates (402). A number of limiting grooves (405) are provided at the top of the limiting plate (404).

8. A portable geographic information acquisition device for emergency mapping according to claim 7, characterized in that: The guide groove (403) is internally slidably connected to a slider (406), the slider (406) is fixedly connected to a fixed block (407), the fixed block (407) is fixedly connected to a mounting plate (408), the other side of the mounting plate (408) is fixedly connected to a pair of telescopic plates (409), the other end of the pair of telescopic plates (409) is rotatably connected to a driven shaft (410), the two ends of the driven shaft (410) are fixedly connected to rollers (411), and a multi-turn angle sensor (412) is installed between the inner walls of the telescopic plates (409).

9. A portable geographic information acquisition device for emergency mapping according to claim 8, characterized in that: A fixing seat (5) is fixedly installed at the center of the surface of the fixing block (407). A crossbar (501) is rotatably connected to the fixing seat (5). A linkage plate (502) is rotatably connected to both ends of the crossbar (501). A second spring (504) is sleeved on the crossbar (501). The two ends of the second spring (504) are fixedly connected to one side of the fixing seat (5) and one side of the linkage plate (502), respectively. A side rod (505) is fixedly connected to the other end of the linkage plate (502). The side rod (505) is locked inside the limiting groove (405).

10. A portable geographic information acquisition device for emergency mapping according to claim 9, characterized in that: An adjustment groove (506) is provided on the linkage plate (502). A push rod (507) is slidably connected inside the adjustment groove (506). A pair of adjustment plates (508) are rotatably connected to the middle position of the push rod (507). The other end of the pair of adjustment plates (508) is fixedly connected to the driven rod (509). The two ends of the driven rod (509) are rotatably connected to the inner wall of the telescopic plate (409). A pull plate (510) is fixedly connected to the middle position of the driven rod (509). A handle (511) is fixedly connected to the other end of the pull plate (510).

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