Geographic information surveying instrument

Abstract

The invention discloses a geographic information surveying instrument, and relates to the technical field of surveying instruments. Wherein a surveying and mapping probe is arranged on the front surface of the surveying and mapping instrument body, and a calibration area is arranged above the back surface of the surveying and mapping instrument body; the bottom end of the surveying instrument body is provided with a bearing mechanism, and the bearing mechanism comprises a bearing platform; an extension mechanism is arranged below the bearing platform, the extension mechanism comprises extension supporting legs, positioning conical rods are rotationally arranged on the front and rear sides of the bottom ends of the extension supporting legs through bearings, and the extension supporting legs enter the soil through rotation of the positioning conical rods, so that the surveying and mapping stability is improved. According to the geographic information surveying instrument, the bearing platform is matched with the bearing supporting legs and the extension supporting legs, the surveying instrument body is supported and positioned, after the bearing supporting legs capable of locking the angle drive the extension supporting legs to turn over, the extension supporting legs slide downwards and drive the positioning cone rod to drill into ground soil, surveying and mapping are changed, and the supporting length is achieved; and the use requirements of different surveying and mapping sites are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of surveying instruments, in particular to a geographic information surveying instrument. BACKGROUND

[0002] A surveying instrument refers to a professional instrument and equipment for collecting, processing and outputting geographic spatial data, mainly used for determining the position, shape, attributes and other information of ground objects, and is based on global navigation satellite system, remote sensing and geographic information system as core technologies, combined with computer, photoelectric and communication technologies to achieve high-precision measurement, and is commonly used in engineering construction, land planning, map making and administrative management, such as house property confirmation, travel navigation, agricultural precision operation, etc., through coordinates (such as latitude, longitude and elevation) to determine the position of ground objects, record the material, size, ownership and other multiple attributes of ground objects, and track the changes of ground objects over time. The utility model with publication number CN218884968U discloses a portable geographic information surveying instrument, which solves the problem of inconvenience in carrying the existing geographic information surveying instrument by setting a portable support, wherein a first support rod, a second support rod and a third support rod are arranged in the portable support, the first support rod, the second support rod and the third support rod are arranged to position and support the surveying instrument, and the support can be quickly folded and unfolded in a folding manner, thereby greatly reducing the space occupied by the support and facilitating the use of the support in a small space.

[0003] The utility model with publication number CN218297171U discloses a geographic information engineering surveying instrument, a horizontal detection device automatically detects the level of the surveying instrument, and can adjust the extension degree of the three extension supporting legs of the extension tripod in real time according to the level of the surveying instrument to change the horizontal state of the surveying instrument until the horizontal detection device detects that the surveying instrument has been leveled, and then stops the extension of the supporting legs, thereby greatly improving the leveling efficiency during installation of the surveying instrument.

[0004] However, the above-mentioned disclosed geographic information surveying instrument still has the following problems in actual use: although the triangular support is used to support the surveying instrument, the stability and support effect during surveying are improved, but the triangular support needs to be adjusted one by one during use, and needs to be debugged after the rotation angle, and the extension supporting leg also needs to be calibrated according to the extension length, which may affect the stability of the support due to the difference in adjustment, and also causes the surveying steps to be complicated and inconvenient to use and operate.

[0005] Therefore, we propose a geographic information surveying instrument to solve the above-mentioned problems. SUMMARY

[0006] The present application aims to provide a geographic information surveying instrument, to solve the problem that the existing triangular support is used to support the surveying instrument, improving the stability and support effect during surveying, but such triangular support needs to be adjusted one by one during use, and needs to be debugged after the rotation angle, and the extension legs also need to be calibrated according to the extension length, which may affect the stability of the support due to the difference in adjustment, and also causes the surveying procedure to be complicated and inconvenient to use.

[0007] To achieve the above object, the present application provides the following technical scheme: a geographic information surveying instrument, comprising a surveying instrument body and a portable handle rotatably installed on the outer wall of the surveying instrument body; Wherein, the front surface of the surveying instrument body is provided with a surveying probe, and the upper part of the back surface of the surveying instrument body is provided with a calibration area; further comprising: The bottom end of the surveying instrument body is provided with a bearing mechanism, and the bearing mechanism comprises a bearing platform, and the bottom surface of the bearing platform is connected to the upper end of the bearing leg through an angle hinge such as a torsion spring; The lower part of the bearing platform is provided with an extension mechanism, and the extension mechanism comprises an extension leg, and the bottom end of the extension leg is provided with a positioning cone rod on the front and rear sides through a bearing, and the rotation of the positioning cone rod into the soil improves the surveying stability.

[0008] Preferably, the bearing mechanism comprises a locking ring body, and the locking ring body is slidingly sleeved on the lower outer wall of the bearing platform, and the upper end of the locking ring body is in mutual resistance with the bearing platform through an elastic slide rod, and the locking ring body in the initial state is located below the bearing platform, and the bearing platform and the surveying instrument body are inserted and locked, which is used for supporting and positioning during surveying.

[0009] Preferably, the bearing mechanism comprises a horizontal circular frame, and the horizontal circular frame is rotatably arranged in the upper end of the bearing leg arranged at an equal angle through a bearing, and the bottom surface of the horizontal circular frame is fixedly provided with horizontal counterweights on the front and rear sides, which ensures that the horizontal circular frame does not rotate and tilt with the bearing leg, and always remains in a horizontal state.

[0010] Preferably, the bearing mechanism comprises a positioning arc plate, and the positioning arc plate is fixedly installed at equal distances in the interior of the horizontal circular frame, and the side close to the locking ring body in the interior of the horizontal circular frame is provided with a locking positioning rod, and the inner end of the locking positioning rod is limited between adjacent positioning arc plates.

[0011] Preferably, the inner end of the locking positioning rod of the bearing mechanism is in a flat structure of a circular sheet, and the outer end of the locking positioning rod is arranged on the bottom surface of the locking ring body, and the locking ring body drives the locking positioning rod and the horizontal circular frame to separate from each other by rising, so that the bearing leg is adjusted in angle, and the horizontal circular frame always remains in a horizontal state, and after the adjustment of the bearing leg, the locking positioning rod is locked again, and the bearing leg after rotation is positioned.

[0012] Preferably, the upper end of the extension leg of the extension mechanism is slidingly arranged on the outer wall of the bearing leg, the bearing leg is slidingly penetrated into the inner part of the extension leg through the protrusion at the lower end, the inner part of the extension leg is rotatably arranged with a driving shaft through a bearing, and the outer wall of the driving shaft is provided with a spiral guide groove.

[0013] Preferably, the driving shaft of the extension mechanism is slidingly penetrated and arranged at the protrusion at the lower end of the bearing leg, and the driving shaft is connected with the bearing leg through the spiral guide groove opened on the outer wall, the extension leg drives the driving shaft in the inner part to rotate through the connection of the spiral guide groove.

[0014] Preferably, the upper end of the positioning cone rod of the extension mechanism is arranged in the inner part of the extension leg, and the upper ends of the positioning cone rods on the left and right sides are connected with the lower end of the driving shaft through a belt pulley assembly, so that the positioning cone rod is rotated during the downward movement of the extension leg, so as to be drilled into the inner part of the soil.

[0015] Preferably, the extension mechanism comprises an adjusting screw, the upper end of the adjusting screw is rotatably arranged at the center position of the bottom surface of the bearing platform through a bearing, the outer wall of the adjusting screw is threadedly connected with an adjusting block, and the outer wall of the adjusting block is hingedly connected with the upper end of the extension turnover rod at equal angles.

[0016] Preferably, the lower end of the extension turnover rod of the extension mechanism is hingedly connected with the inner wall of the extension leg, and the adjusting block in the initial state is located above the outer wall of the adjusting screw, after the angle of the bearing leg is adjusted and locked, the extension turnover rod is lowered through the adjusting block, and the hinged extension leg is synchronously driven to slide downward, so as to adapt to the use requirements of different surveying sites.

[0017] Compared with the prior art, the geographical information surveying instrument has the beneficial effects that: the bearing platform cooperates with the bearing leg and the extension leg to support and position the surveying instrument body, the bearing leg with lockable angle drives the extension leg to turn over, then the extension leg slides downward and drives the positioning cone rod to drill into the soil, the support length is changed, and the use requirements of different surveying sites are adapted, and the specific contents are as follows: 1. The surveying instrument body is carried through the externally arranged portable handle, so as to facilitate the disassembly and assembly operation between the surveying instrument body and the bearing platform, the front surveying probe collects geographical environment information, the rear calibration area is operated and adjusted, the surveying instrument body is inserted and locked on the top surface of the bearing platform, and the bearing leg and the extension leg support and position the surveying instrument body, so as to improve the stability of the surveying operation.

[0018] 2. By sliding the locking ring outside the bearing platform upwards, the locking positioning rod on the bottom surface is separated from the positioning arc plate inside the horizontal circular frame, so that the bearing leg and the extended leg are not limited, and then the angle is adjusted after rotating outward.

[0019] Further, the bearing leg changes the angle, and the horizontal circular frame is installed inside, which maintains the horizontal state through the horizontal counterweight on the bottom surface, so that it does not rotate synchronously with the bearing leg, and can always be clamped and connected between the locking positioning rod, so that the bearing leg can be locked and positioned by the horizontal circular frame and the locking positioning rod after rotating to any angle.

[0020] The locking ring slides down through the extension of the elastic positioning rod, drives the locking positioning rod to re-enter the inside of the horizontal circular frame, and is clamped between the adjacent positioning arc plates, so as to lock and position the bearing leg and the extended leg, avoiding misplacement during surveying operation of the surveying instrument body.

[0021] 3. The rotating adjustment screw drives the threaded adjustment slider and the extended turnover rod to move downward synchronously, and the extended leg hinged to the outer end of the extended turnover rod is positioned and locked by the locked bearing leg, so that the extended leg is lowered synchronously by the lowered extended turnover rod, the support length of the surveying is changed, and the use demand of different surveying sites is adapted.

[0022] Further, the extended leg drives the driving shaft to descend, and is screw-connected between the spiral guide groove and the support foot, so as to rotate when descending, and rotates the positioning cone rod through the belt pulley assembly, so as to contact and drill into the soil inside the supporting ground to realize positioning. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 1 Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 4 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 5 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 4 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 6 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 7 It is a schematic diagram of the overall three-dimensional structure of the present application; Figure 8 Figure 7 ​​Amplified structure schematic view at C; Figure 9 Amplified structure schematic view at C; Figure 10 Amplified structure schematic view at C; Figure 9 Amplified structure schematic view at C.

[0024] In the figure: 1, surveying instrument body; 2, portable handle; 3, surveying probe; 4, calibration area; 5, bearing platform; 6, bearing leg; 7, extension leg; 8, positioning cone rod; 9, locking ring body; 10, elastic slide rod; 11, horizontal circular frame; 12, horizontal counterweight; 13, positioning arc plate; 14, locking positioning rod; 15, drive shaft; 16, spiral guide groove; 17, belt pulley assembly; 18, adjusting screw; 19, adjusting slide block; 20, extension turnover rod. DETAILED DESCRIPTION

[0025] 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 a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0026] Please refer to Figures 1-10 The present application provides the following technical solutions: Embodiment 1: In order to solve the problems existing in the use of the existing geographic information surveying instrument, the following technical solution is disclosed in this embodiment: a geographic information surveying instrument, comprising a surveying instrument body 1 and a portable handle 2 rotatably installed on the outer wall of the surveying instrument body 1; wherein the front surface of the surveying instrument body 1 is provided with a surveying probe 3, and the upper part of the back surface of the surveying instrument body 1 is provided with a calibration area 4; the bottom end of the surveying instrument body 1 is provided with a bearing mechanism, and the bearing mechanism comprises a bearing platform 5, which is inserted and locked between the surveying instrument body 1, for supporting and positioning during surveying.

[0027] As Figures 1-3 shown, the surveying probe 3 on the front surface of the surveying instrument body 1 is used to input and record geographic information, and is adjusted by human operation of the calibration area 4, and the lower end of the surveying instrument body 1 is inserted into the top surface of the bearing platform 5 contained in the bearing mechanism, and is supported and positioned by the bearing leg 6 and the extension leg 7 on the bottom surface of the bearing platform 5, thereby improving the stability of the surveying instrument body 1 during use.

[0028] In order to solve the problems existing in the use of the existing geographic information surveying and mapping instrument, the technical scheme is disclosed in the embodiment, the bottom surface of the bearing platform 5 is connected to the upper end of the bearing leg 6 through the torsion spring angle hinge, the bearing mechanism comprises a locking ring body 9, the locking ring body 9 is slidingly sleeved on the lower outer wall of the bearing platform 5, the upper end of the locking ring body 9 is in abutment with the bearing platform 5 through the elastic slide rod 10, and the locking ring body 9 in the initial state is located below the bearing platform 5, the bearing mechanism comprises a horizontal circular frame 11, the horizontal circular frame 11 is rotatably arranged in the upper end of the bearing leg 6 arranged at equal angles, and the bottom surface of the horizontal circular frame 11 is fixedly provided with horizontal counterweights 12 on the front and rear sides, so that the horizontal circular frame 11 does not rotate and incline with the bearing leg 6 and always remains in a horizontal state.

[0029] The bearing mechanism comprises a positioning arc plate 13, the positioning arc plate 13 is fixedly installed at equal distances in the interior of the horizontal circular frame 11, and the side close to the locking ring body 9 in the interior of the horizontal circular frame 11 is provided with a locking positioning rod 14, and the inner end of the locking positioning rod 14 is limited between adjacent positioning arc plates 13; the inner end of the locking positioning rod 14 comprised by the bearing mechanism is in a circular flake-shaped flat structure, and the outer end of the locking positioning rod 14 is arranged on the bottom surface of the locking ring body 9, the locking ring body 9 drives the locking positioning rod 14 to separate from the horizontal circular frame 11 by rising, so that the bearing leg 6 is adjusted in angle, the horizontal circular frame 11 always remains in a horizontal state, and after the bearing leg 6 is adjusted, the locking positioning rod 14 is locked again, so that the bearing leg 6 after rotation is positioned.

[0030] As shown in Figure 5 , Figures 7-8 When the support angle of the bearing platform 5 bottom surface bearing leg 6 is adjusted, the locking ring body 9 below the outside of the bearing platform 5 is manually slid upward, so as to extrude the elastic slide rod 10, at the same time, drive the bottom surface locking positioning rod 14 arranged at equal angles to rise synchronously, so that the locking positioning rod 14 and the horizontal circular frame 11 are separated from each other, so that the bearing leg 6 can be independently rotated and adjusted.

[0031] Further, when the locking positioning rod 14 no longer locks the horizontal circular frame 11 in the bearing leg 6, the bearing leg 6 connected by the torsion spring drives the extension leg 7 at the bottom to rotate outward synchronously, thereby forming a triangular support effect in an inclined structure, and the horizontally circular frame 11 rotatably installed in the bearing leg 6 is positioned by the horizontal counterweight 12 on the bottom surface, so that the horizontal circular frame 11 does not rotate and always remains in a horizontal state, and then the locking ring body 9 drives the locking positioning rod 14 to descend, thereby being engaged in the adjacent positioning arc plate 13 in the horizontal circular frame 11, so as to realize the locking and positioning of the bearing leg 6 and the extension leg 7, and avoid dislocation when the surveying and mapping instrument body 1 is working.

[0032] In order to solve the problems existing in the use of the existing geographic information surveying instrument, the technical scheme is disclosed in the embodiment, the lower part of the bearing platform 5 is provided with an extension mechanism, the extension mechanism comprises an extension leg 7, the bottom end of the extension leg 7 is provided with a positioning taper rod 8 rotatingly through bearings on the front and rear sides, the positioning taper rod 8 is rotated into the soil to improve the surveying stability, the upper end of the extension leg 7 comprised in the extension mechanism is slidingly arranged on the outer wall of the bearing leg 6, the bearing leg 6 is slidingly penetrated into the inside of the extension leg 7 through the protrusion at the lower end, the inside of the extension leg 7 is provided with a driving shaft 15 rotatingly through bearings, and the outer wall of the driving shaft 15 is provided with a spiral guide groove 16.

[0033] The driving shaft 15 comprised in the extension mechanism is slidingly penetrated and arranged at the protrusion at the lower end of the bearing leg 6, the driving shaft 15 is screw-connected between the bearing leg 6 through the spiral guide groove 16 opened on the outer wall, the extension leg 7 drives the driving shaft 15 in the inside to rotate through the connection of the spiral guide groove 16.

[0034] The upper end of the positioning taper rod 8 comprised in the extension mechanism is arranged in the inside of the extension leg 7, the upper end of the positioning taper rod 8 on the left and right sides is connected with the lower end of the driving shaft 15 through a belt pulley assembly 17, so that the extension leg 7 drives the positioning taper rod 8 to rotate during the downward movement of the extension leg 7, so that the positioning taper rod 8 is drilled into the soil; the extension mechanism comprises an adjusting screw 18, the upper end of the adjusting screw 18 is rotatingly installed at the center position of the bottom surface of the bearing platform 5 through bearings, the outer wall of the adjusting screw 18 is screw-connected with an adjusting block 19, and the outer wall of the adjusting block 19 is hingedly connected with the upper end of an extension turnover rod 20 at equal angles; the lower end of the extension turnover rod 20 comprised in the extension mechanism is hingedly connected with the inner wall of the extension leg 7, and the adjusting block 19 in the initial state is located above the outer wall of the adjusting screw 18, after the adjustment angle of the bearing leg 6 is locked, the extension turnover rod 20 is lowered by the adjusting block 19, and the hingedly connected extension leg 7 is synchronously driven to slide downward, which adapts to the use requirements of different surveying sites.

[0035] As shown in Figure 1 , Figure 6 , when the length of the extension leg 7 is adjusted according to the surveying requirements, the adjusting screw 18 rotating the bottom surface of the bearing platform 5 is connected with the adjusting block 19 screw-connected between the adjusting screw 18, the adjusting block 19 is positioned with the extension leg 7 through the extension turnover rod 20, so that the adjusting screw 18 drives the adjusting block 19 and the extension turnover rod 20 to move downward synchronously, the extension turnover rod 20 abuts against the extension leg 7, and drives the extension leg 7 to slide downward when the extension leg 7 is in the angle locking state, thereby changing the supporting length and adapting to the use requirements of different surveying sites.

[0036] As shown in Figures 9-10As shown, in the process of sliding downward, the extension leg 7 under the bearing leg 6 drives the internal drive shaft 15 to descend, which is connected with the protrusion at the lower end of the bearing leg 6 through the spiral guide groove 16 of the outer wall, and then drives the drive shaft 15 to rotate, at the same time, the drive shaft 15 drives the positioning cone rod 8 to rotate through the belt pulley assembly 17, so that the positioning cone rod 8 rotates into the soil to realize positioning, and the stability of lifting support and the convenience of operation are improved.

[0037] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A geographic information surveying and mapping instrument, comprising a surveying and mapping instrument body (1), and a portable handle (2) rotatably mounted on an outer wall of the surveying and mapping instrument body (1); in, A surveying probe (3) is provided on the front of the surveying instrument body (1), and a calibration area (4) is provided on the upper back of the surveying instrument body (1); It is characterized by further comprising: The bottom end of the surveying instrument body (1) is provided with a bearing mechanism, and the bearing mechanism includes a bearing platform (5), and the bottom surface of the bearing platform (5) is hingedly connected to the upper end of the bearing support foot (6) at equal angles via a torsion spring; An extension mechanism is provided below the bearing platform (5), and the extension mechanism includes an extension support leg (7), and positioning cone rods (8) are provided at the front and rear sides of the bottom end of the extension support leg (7) for rotation via bearings. The positioning cone rods (8) are rotated to enter the soil to improve the mapping stability.

2. A geographic information surveying and mapping instrument according to claim 1, characterized in that: The bearing mechanism includes a locking ring body (9), and the locking ring body (9) is slidably sleeved on the lower outer wall of the bearing platform (5), and the upper end of the locking ring body (9) and the bearing platform (5) are mutually abutted through the elastic sliding rod (10), and the locking ring body (9) in the initial state is located below the bearing platform (5), and at the same time, the bearing platform (5) and the surveying instrument body (1) are plugged and locked, so as to support and position the bearing platform during surveying.

3. A geographic information surveying and mapping instrument according to claim 1, characterized in that: The bearing mechanism includes a horizontal circular frame (11), and the horizontal circular frame (11) is rotatably arranged inside the upper end of the bearing support legs (6) arranged at equal angles through bearings, and horizontal counterweights (12) are fixedly arranged on both the front and rear sides of the bottom of the horizontal circular frame (11) to ensure that the horizontal circular frame (11) does not rotate and tilt with the bearing support legs (6) and is always in a horizontal state.

4. A geographic information surveying and mapping instrument according to claim 3, characterized in that: The bearing mechanism includes positioning arc plates (13), and the positioning arc plates (13) are fixedly installed at equal distances inside the horizontal circular frame (11), and a locking positioning rod (14) is provided on one side of the horizontal circular frame (11) close to the locking ring body (9), and the inner end of the locking positioning rod (14) is limited to between adjacent positioning arc plates (13).

5. A geographic information surveying and mapping instrument according to claim 4, characterized in that: The inner end of the locking positioning rod (14) included in the bearing mechanism is a disc-shaped flat structure, and the outer end of the locking positioning rod (14) is arranged on the bottom surface of the locking ring body (9). The locking ring body (9) drives the locking positioning rod (14) and the horizontal circular frame (11) to separate from each other by rising, so that the bearing support leg (6) can be adjusted in angle. The horizontal circular frame (11) is always in a horizontal state. After the bearing support leg (6) is adjusted, it is locked with the locking positioning rod (14) again to position the bearing support leg (6) after rotation.

6. A geographic information surveying and mapping instrument according to claim 1, characterized in that: The upper end of the extension leg (7) included in the extension mechanism is slidably arranged on the outer wall of the bearing leg (6), and the bearing leg (6) slides through the interior of the extension leg (7) through the protrusion at the lower end, and a driving shaft (15) is rotatably arranged inside the extension leg (7) through a bearing, and a spiral guide groove (16) is opened on the outer wall of the driving shaft (15).

7. A geographic information surveying and mapping instrument according to claim 6, characterized in that: The extension mechanism includes a driving shaft (15) which is slidably penetrated and arranged at the lower end protrusion of the supporting foot (6), and the driving shaft (15) is spirally connected to the supporting foot (6) through a spiral guide groove (16) provided on the outer wall. The extension foot (7) drives the internal driving shaft (15), and the driving shaft (15) is rotated through the connection of the spiral guide groove (16).

8. A geographic information surveying and mapping instrument according to claim 7, characterized in that: The upper end of the positioning cone rod (8) included in the extension mechanism is arranged inside the extension support leg (7), and the upper ends of the positioning cone rods (8) on the left and right sides are connected to the lower end of the driving shaft (15) through a pulley assembly (17), so that the positioning cone rod (8) is driven to rotate during the downward movement of the extension support leg (7) so that it can drill into the soil.

9. The geographic information surveying and mapping instrument according to claim 1, characterized in that: The extension mechanism includes an adjusting screw (18), and the upper end of the adjusting screw (18) is rotatably mounted at the center position of the bottom surface of the supporting platform (5) through a bearing, and the outer wall of the adjusting screw (18) is threadedly connected to the adjusting slider (19), and the outer wall of the adjusting slider (19) is hingedly connected to the upper end of the extension flip rod (20) at an equal angle.

10. The geographic information surveying and mapping instrument according to claim 9, characterized in that: The lower end of the extension flip rod (20) included in the extension mechanism is hingedly connected to the inner wall of the extension support leg (7), and the adjustment slider (19) in the initial state is located on the upper outer wall of the adjustment screw (18). After the support leg (6) is adjusted and locked at an angle, the extension flip rod (20) is driven downward by the adjustment slider (19), and the hinged extension support leg (7) is simultaneously driven to slide downward, thereby adapting to the use requirements of different surveying and mapping sites.

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