Folding portable surveying and mapping rod for surveying and mapping of unmanned aerial vehicle

By using a threaded connection and a toothed damping structure, the problems of inconvenience in carrying traditional surveying poles and instability in drone hoisting are solved, enabling convenient fixing and multiple deployment of the drone surveying pole, thus improving surveying accuracy and safety.

CN223962294UActive Publication Date: 2026-03-03JIANGSU CHUANGSPATIOTEMPORAL INFORMATION TECH CO LTD
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Patent Information

Application Number
CN202520705068.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-15
Publication Date
2026-03-03
Estimated Expiration
2035-04-15

AI Technical Summary

Technical Problem

Traditional surveying poles are inconvenient to carry, easily damaged, and prone to falling off during drone transport due to insecure connections, affecting surveying accuracy and safety.

Method used

A foldable portable surveying rod for UAV surveying was designed. It is fixed to the bottom of the UAV by a threaded connection. The surveying device is stably connected and the expandable measuring rod can be adjusted multiple times by using a locking tooth and damping structure, which ensures that the surveying device is fixed to the UAV and can be easily deployed.

Benefits of technology

It enables convenient carrying and stable connection of the surveying pole, avoiding damage and detachment, and improving surveying accuracy and work efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a folding portable surveying and mapping rod for surveying and mapping of an unmanned aerial vehicle. A threaded sleeve is fixedly connected to the middle of the bottom face of the unmanned aerial vehicle, a threaded column is in threaded connection with the interior of the threaded sleeve, a square plate is fixedly connected to the bottom face of the threaded column, inserting holes are formed in the two ends of the top face of the square plate respectively, U-shaped plates are inserted into the inserting holes, and surveying and mapping devices are placed in the U-shaped plates. The two ends of the top face of the U-shaped plate are fixedly connected with rectangular sleeves correspondingly. The surveying and mapping device comprises a U-shaped block, the upper portion of an inner cavity of the U-shaped block is rotationally connected with a first measuring assembly through a first rotating shaft, and the two ends of the outer surface of the first rotating shaft are fixedly connected with first clamping teeth respectively. The surveying and mapping device can be fixed on the unmanned aerial vehicle through mutual cooperation of the threaded sleeve, the threaded column, the square plate and the U-shaped plate, the surveying and mapping device can be conveniently transported to a designated position in the later period, and measurement work in the later period is facilitated.
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Description

Technical Field

[0001] This utility model relates to the field of surveying and mapping technology, specifically to a foldable portable surveying pole for UAV surveying. Background Technology

[0002] In surveying work, surveying instruments and surveying rods are commonly used tools for measuring the location and height of terrain, buildings, or other targets. The traditional surveying process typically includes the following steps: First, one worker carries a surveying instrument, and another carries a surveying rod. The worker carrying the instrument selects a location and sets up the instrument, while the worker carrying the surveying rod moves to the designated location according to the instrument's instructions. Then, the worker carrying the rod places it vertically on the ground to ensure stability, and the worker carrying the instrument observes the surveying rod through the instrument to complete the survey of the target area.

[0003] However, the aforementioned traditional surveying methods have significant technical shortcomings, mainly in the following aspects:

[0004] 1. Although traditional surveying poles have a storage structure, their overall length is still quite long after being stored. When carrying them, they are prone to collisions or scratches with the ground, which can lead to damage to the surveying pole or a decrease in accuracy.

[0005] 2. The surveying pole is quite heavy, and carrying it for a long time will increase the fatigue of the staff and affect work efficiency;

[0006] To address the aforementioned problems, some staff members utilize drones in conjunction with rigging to transport the surveying pole to the designated location. However, this method of transport is prone to the following issues:

[0007] 1. The connection between the sling and the surveying pole is not secure, which may cause the surveying pole to fall off during transportation, resulting in loss or damage;

[0008] 2. Due to the long hoisting rope, the surveying pole is easily affected by the wind and sways during the hoisting process, which affects the normal flight of the drone. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides a foldable portable surveying pole for UAV surveying, which solves the problems mentioned in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A foldable portable surveying pole for UAV surveying includes a UAV; a threaded sleeve is fixedly connected to the middle of the bottom surface of the UAV, a threaded post is threadedly connected to the threaded sleeve, a square plate is fixedly connected to the bottom surface of the threaded post, and insertion holes are respectively provided at both ends of the top surface of the square plate. A U-shaped plate is inserted into the insertion holes, a surveying device is placed inside the U-shaped plate, and rectangular sleeves are fixedly connected to both ends of the top surface of the U-shaped plate. An auxiliary connecting component is installed on the top surface of the square plate; the surveying device includes a U-shaped block, a first measuring component is rotatably connected to the upper part of the inner cavity of the U-shaped block through a first rotating shaft, and first locking teeth are fixedly connected to both ends of the outer surface of the first rotating shaft; a second measuring component is rotatably connected to the lower part of the inner cavity of the U-shaped block through a second rotating shaft, and second locking teeth are fixedly connected to both ends of the outer surface of the second rotating shaft; locking tooth components are installed at both ends of one side of the U-shaped block.

[0012] Furthermore, the tooth assembly includes a tooth damping rod and a damping sleeve. The tooth damping rod and the damping sleeve are fixedly connected to both ends of one side of the U-shaped block, respectively. An L-shaped locking rod is fixedly connected to one end of the tooth damping rod, and a double-sided locking tooth is fixedly connected to one end of the L-shaped locking rod. The double-sided locking tooth engages with the first locking tooth and the second locking tooth, respectively. A blocking groove is provided on the top surface of the L-shaped locking rod. A lower insertion rod is slidably connected inside the damping sleeve, and one end of the lower insertion rod is inserted into the blocking groove.

[0013] Furthermore, the first measuring component includes a first measuring rod, the first measuring rod is fixedly connected to the surface of the first rotating shaft, a first storage groove is provided on one side of the first measuring rod, a second storage groove is provided inside the first measuring rod and on one side of the first storage groove, a first round hole and a second round hole are respectively provided on both sides of the first measuring rod, and an extension measuring component is installed in the second storage groove.

[0014] Furthermore, the extended measuring component includes a second measuring rod, which is slidably connected in the second receiving groove. One end of the second measuring rod is provided with an adjustment groove, and an adjustment damping rod is fixedly connected to the inner wall of the adjustment groove. One end of the adjustment damping rod is fixedly connected with an adjustment rod, and one end of the adjustment rod passes through the second measuring rod and is respectively inserted into the first or second circular hole. The other end of the second measuring rod is respectively provided with a rectangular hole.

[0015] Furthermore, the extended measuring component also includes a third measuring rod, the other end of the second measuring rod is damped and rotatably connected to the third measuring rod, the other side of the third measuring rod is provided with a fixing groove, the inner wall of the fixing groove is fixedly connected to a forward damping rod, one end of the forward damping rod is fixedly connected to a docking plate, one end of the docking plate is inserted into a rectangular hole, and the second measuring component adopts the same structure as the first measuring component.

[0016] Furthermore, the auxiliary connection component includes a rectangular block, the top surface of the square plate is fixedly connected to the rectangular block, one side of the rectangular block is fixedly connected to a connecting damping rod, one end of the connecting damping rod is fixedly connected to a plug rod, and one end of the plug rod is inserted into the rectangular sleeve.

[0017] This utility model provides a foldable portable surveying pole for UAV surveying. Compared with the prior art, it has the following advantages:

[0018] 1. By connecting the threaded post and the threaded sleeve, the square plate can be fixed to the bottom of the drone. After fixing, the surveying device is placed inside the U-shaped plate, and then the U-shaped plate and the square plate are fixedly connected. This achieves the fixed connection between the surveying device and the drone, which facilitates the later transportation of the surveying device by the drone.

[0019] 2. By moving the L-shaped lever, the double-sided locking teeth are moved to one side, so that the double-sided locking teeth disengage from the first locking teeth and the second locking teeth. After disengagement, the first measuring rod in the first measuring component and the second measuring component can be rotated and unfolded to facilitate subsequent measurements.

[0020] 3. If the first unfolding length is insufficient, the third measuring rod can be rotated to one end of the second measuring rod. While rotating, the docking plate is pulled. When the third measuring rod and the second measuring rod are on the same horizontal plane, the docking plate is released and inserted into the second measuring rod to achieve a second unfolding, which can measure a longer distance.

[0021] 4. If the second unfolding length is insufficient, the second measuring rod can be pulled out from the first storage slot. After being pulled out, it can be connected to the second measuring rod on the first measuring rod through the adjusting rod. This completes the unfolding of the second measuring rod and also realizes the overall unfolding of the device, which facilitates subsequent measurements. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0024] Figure 2 A schematic diagram of the overall partial cross-section of this utility model is shown;

[0025] Figure 3 This diagram shows a partial cross-sectional view of the overall structure of this utility model.

[0026] Figure 4 This diagram shows a partially enlarged structural schematic of the surveying device of this utility model;

[0027] Figure 5 A schematic diagram of the disassembled structure of the first measuring component of this utility model is shown;

[0028] Figure 6 This diagram shows a partially enlarged structural schematic of the second measuring rod of this invention;

[0029] Figure 7 This diagram shows a partially enlarged structural schematic of the third measuring rod of this utility model;

[0030] The figure shows: 1. UAV; 2. Threaded sleeve; 3. Threaded post; 4. Square plate; 5. Insertion hole; 6. U-shaped plate; 7. Surveying device; 71. U-shaped block; 72. First rotating shaft; 73. First measuring component; 731. First measuring rod; 732. First storage slot; 733. Second storage slot; 734. First round hole; 735. Second round hole; 736. Second measuring rod; 737. Adjustment slot; 738. Adjustment damping rod; 739. Adjustment rod; 7310. Rectangular hole; 731 1. Third measuring rod; 7312. Fixing groove; 7313. Forward extension damping rod; 7314. Connecting insert plate; 74. First locking tooth; 75. Second rotating shaft; 76. Second measuring assembly; 77. Second locking tooth; 78. Locking tooth assembly; 781. Locking tooth damping rod; 782. Damping sleeve; 783. L-shaped locking rod; 784. Double-sided locking tooth; 785. Blocking groove; 786. Lower insert rod; 8. Rectangular sleeve; 9. Auxiliary connecting assembly; 91. Rectangular block; 92. Connecting damping rod; 93. Insert rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Example 1

[0033] To address the technical problems in the background section, the following foldable portable surveying pole for UAV surveying is provided:

[0034] Combination Figures 1-7As shown, the foldable portable surveying pole for drone surveying provided by this utility model includes a drone 1; a threaded sleeve 2 is fixedly connected to the middle of the bottom surface of the drone 1, a threaded post 3 is threadedly connected to the inner thread of the threaded sleeve 2, a square plate 4 is fixedly connected to the bottom surface of the threaded post 3, two insertion holes 5 are respectively provided at the two ends of the top surface of the square plate 4, a U-shaped plate 6 is inserted into the insertion holes 5, a surveying device 7 is placed in the U-shaped plate 6, a rectangular sleeve 8 is fixedly connected to the two ends of the top surface of the U-shaped plate 6, and an auxiliary connecting component 9 is installed on the top surface of the square plate 4; the surveying device 7 includes a U-shaped block 71, a first measuring component 73 is rotatably connected to the upper part of the inner cavity of the U-shaped block 71 through a first rotating shaft 72, a first locking tooth 74 is fixedly connected to the two ends of the outer surface of the first rotating shaft 72, a second measuring component 76 is rotatably connected to the lower part of the inner cavity of the U-shaped block 71 through a second rotating shaft 75, a second locking tooth 77 is fixedly connected to the two ends of the outer surface of the second rotating shaft 75, and a locking tooth component 78 is installed at the two ends of one side of the U-shaped block 71. The auxiliary connection component 9 includes a rectangular block 91. The rectangular block 91 is fixedly connected to the top surface of the square plate 4. A connecting damping rod 92 is fixedly connected to one side of the rectangular block 91. A plug rod 93 is fixedly connected to one end of the connecting damping rod 92. One end of the plug rod 93 is inserted into the rectangular sleeve 8.

[0035] By connecting the threaded post 3 and the threaded sleeve 2, the square plate 4 can be fixed on the bottom surface of the UAV 1. After fixing, the surveying device 7 is placed into the U-shaped plate 6, and then the U-shaped plate 6 is fixedly connected to the square plate 4. This achieves the fixed connection between the surveying device 7 and the UAV 1, which facilitates the later transportation of the surveying device 7 by the UAV 1.

[0036] Example 2

[0037] like Figures 1-7 As shown, based on the above embodiments, this embodiment further provides the following:

[0038] The toothed assembly 78 includes a toothed damping rod 781 and a damping sleeve 782. The toothed damping rod 781 and the damping sleeve 782 are fixedly connected to both ends of one side of the U-shaped block 71, respectively. An L-shaped toothed rod 783 is fixedly connected to one end of the toothed damping rod 781, and a double-sided toothed rod 784 is fixedly connected to one end of the L-shaped toothed rod 783. The double-sided toothed rod 784 is engaged with the first toothed rod 74 and the second toothed rod 77, respectively. A blocking groove 785 is provided on the top surface of the L-shaped toothed rod 783. A lower insertion rod 786 is slidably connected inside the damping sleeve 782, and one end of the lower insertion rod 786 is inserted into the blocking groove 785. The first measuring component 73 includes a first measuring rod 731. The first measuring rod 731 is fixedly connected to the surface of the first rotating shaft 72. A first storage groove 732 is provided on one side of the first measuring rod 731. A second storage groove 733 is provided inside the first measuring rod 731 and on one side of the first storage groove 732. A first round hole 734 and a second round hole 735 are respectively provided on both sides of the first measuring rod 731. An extension measuring component is installed in the second storage groove 733.

[0039] By moving the L-shaped locking rod 783, the double-sided locking teeth 784 are moved to one side, causing the double-sided locking teeth 784 to disengage from the first locking teeth 74 and the second locking teeth 77. After disengagement, the first measuring rod 731 in the first measuring component 73 and the second measuring component 76 can be rotated and unfolded to facilitate subsequent measurements.

[0040] Example 3

[0041] like Figures 1-7 As shown, based on the above embodiments, this embodiment further provides the following:

[0042] The extended measuring component includes a second measuring rod 736, which is slidably connected in a second receiving groove 733. One end of the second measuring rod 736 is provided with an adjustment groove 737, and an adjustment damping rod 738 is fixedly connected to the inner wall of the adjustment groove 737. One end of the adjustment damping rod 738 is fixedly connected with an adjustment rod 739, and one end of the adjustment rod 739 passes through the second measuring rod 736 and is respectively inserted into the first circular hole 734 or the second circular hole 735. The other end of the second measuring rod 736 is respectively provided with a rectangular hole 7310. The extended measuring component also includes a third measuring rod 7311. The other end of the second measuring rod 736 is damped and rotatably connected to the third measuring rod 7311. A fixing groove 7312 is provided on the other side of the third measuring rod 7311. A forward damping rod 7313 is fixedly connected to the inner wall of the fixing groove 7312. A docking plate 7314 is fixedly connected to one end of the forward damping rod 7313. One end of the docking plate 7314 is inserted into the rectangular hole 7310. The second measuring component 76 adopts the same structure as the first measuring component 73.

[0043] If the initial unfolding length is insufficient, the third measuring rod 7311 can be rotated to one end of the second measuring rod 736. During rotation, the docking plate 7314 is pulled. When the third measuring rod 7311 and the second measuring rod 736 are on the same horizontal plane, the docking plate 7314 is released and inserted into the second measuring rod 736 to achieve a second unfolding, which can measure a longer distance.

[0044] If the second unfolding length is insufficient, the second measuring rod 736 can be pulled out from the first storage slot 732. After being pulled out, it can be inserted into the second round hole 735 on the first measuring rod 731 through the adjusting rod 739, thus completing the unfolding of the second measuring rod 736 and realizing the overall unfolding of the device, which facilitates subsequent measurements.

[0045] Working principle and usage process of this utility model:

[0046] In use:

[0047] During transport, firstly, the staff screws one end of the threaded post 3 into the threaded sleeve 2, thus fixing the square plate 4 to the drone 1. After connection, the staff places the folded and stored surveying device 7 into the U-shaped plate 6 and inserts both ends of the U-shaped plate 6 into the insertion holes 5. Before insertion, the staff needs to press the insertion rod 93, which causes the connecting damping rod 92 to retract. After the U-shaped plate 6 is inserted, the staff releases the insertion rod 93, which resets under the action of the connecting damping rod 92. The reset insertion rod 93 is then inserted into the rectangular sleeve 8, thus fixing the U-shaped plate 6 and the surveying device 7, facilitating the transport of the surveying device 7 later.

[0048] During the first deployment, firstly, the L-shaped locking lever 783 is moved. The L-shaped locking lever 783 will move the double-sided locking teeth 784. When the double-sided locking teeth 784 disengages from the first locking tooth 74 and the second locking tooth 77, the operator pulls down the lower insertion rod 786. As the lower insertion rod 786 moves downward, it inserts into the blocking groove 785, thus positioning the L-shaped locking lever 783 and preventing the L-shaped locking lever 783 from resetting the double-sided locking teeth 784 under the action of the locking tooth damping rod 781. At this point, the operator... The operator can then rotate the first measuring component 73 and the second measuring component 76. When the first measuring component 73 and the second measuring component 76 are rotated to the same horizontal plane, the rotation is stopped, and the lower insertion rod 786 is pulled upward. At this time, the L-shaped locking rod 783 is reset under the action of the locking tooth damping rod 781. When the L-shaped locking rod 783 is reset, it will drive the double-sided locking tooth 784 to be reset, so that the double-sided locking tooth 784 re-engages with the first locking tooth 74 and the second locking tooth 77, thus realizing the first unfolding.

[0049] During the second unfolding, the third measuring rod 7311 is rotated. As the third measuring rod 7311 rotates, the operator pulls the docking plate 7314, which moves and is housed in the fixing slot 7312. At the same time, the forward extension damping rod 7313 is pressed. When the third measuring rod 7311 rotates and becomes parallel to the second measuring rod 736, the docking plate 7314 is released. Under the action of the forward extension damping rod 7313, the docking plate 7314 is inserted into the rectangular hole 7310, thus completing the fixing of the third measuring rod 7311 and the second measuring rod 736 and realizing the second unfolding.

[0050] During the third unfolding, firstly, the adjusting rod 739 is moved. As the adjusting rod 739 moves, it will be removed from the first circular hole 734. After it is removed, the operator moves the second measuring rod 736. When the second measuring rod 736 moves, it will drive the third measuring rod 7311 to move. When one end of the second measuring rod 736 is removed from the first storage slot 732, the adjusting rod 739 is released. The adjusting rod 739 will be reset under the action of the adjusting damping rod 738. During the reset, one end of the adjusting rod 739 is inserted into the second circular hole 735, which fixes the second measuring rod 736 and the first measuring rod 731, and also realizes the third unfolding.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A folding portable surveying pole for use with a drone surveying, characterized in that: Including unmanned aerial vehicle (1), unmanned aerial vehicle (1) bottom middle fixedly connected with threaded sleeve (2), threaded sleeve (2) internal thread is connected with threaded column (3), threaded column (3) bottom fixedly connected with square plate (4), square plate (4) top surface two ends are provided with jack (5) respectively, jack (5) insert U-shaped plate (6) in, U-shaped plate (6) internal place has surveying and mapping device (7), U-shaped plate (6) top surface two ends are fixedly connected with rectangular sleeve (8) respectively, square plate (4) top surface is installed with auxiliary connecting assembly (9), Surveying and mapping device (7) includes U-shaped block (71), the first measurement assembly (73) is rotatably connected through the first rotating shaft (72) in the upper portion of the inner cavity of the U-shaped block (71), the first rotating shaft (72) outer surface two ends are fixedly connected with first pawl (74) respectively, the second measurement assembly (76) is rotatably connected through the second rotating shaft (75) in the lower portion of the inner cavity of the U-shaped block (71), the second rotating shaft (75) outer surface two ends are fixedly connected with second pawl (77) respectively, the two ends of the side of the U-shaped block (71) are installed with pawl assembly (78) respectively.

2. The foldable portable surveying pole for unmanned aerial vehicle surveying according to claim 1, wherein: The pawl assembly (78) includes a pawl damping rod (781) and a damping sleeve (782), the two ends of the side of the U-shaped block (71) are fixedly connected with the pawl damping rod (781) and the damping sleeve (782) respectively, one end of the pawl damping rod (781) is fixedly connected with an L-shaped clamping rod (783), one end of the L-shaped clamping rod (783) is fixedly connected with a double-sided pawl (784), the double-sided pawl (784) is engagedly connected with the first pawl (74) and the second pawl (77) respectively, a blocking groove (785) is arranged on the top surface of the L-shaped clamping rod (783), a lower insertion rod (786) is slidably connected in the damping sleeve (782), one end of the lower insertion rod (786) is inserted into the blocking groove (785) in matching mode.

3. The foldable portable surveying pole for UAV surveying according to claim 2, characterized in that: The first measurement assembly (73) includes a first measurement rod (731), the first measurement rod (731) is fixedly connected to the surface of the first rotating shaft (72), a first receiving groove (732) is arranged on one side of the first measurement rod (731), a second receiving groove (733) is arranged in the inside of the first measurement rod (731) and located on one side of the first receiving groove (732), first circular hole (734) and second circular hole (735) are arranged on the two sides of the first measurement rod (731) respectively, an extension measurement component is installed in the second receiving groove (733).

4. The foldable portable surveying pole for UAV surveying according to claim 3, characterized in that: The extension measuring component includes a second measuring rod (736), the second measuring rod (736) is slidably connected in the second receiving groove (733), one end of the second measuring rod (736) is provided with an adjusting groove (737), an adjusting damping rod (738) is fixedly connected to the inner wall of the adjusting groove (737), one end of the adjusting damping rod (738) is fixedly connected with an adjusting rod (739), one end of the adjusting rod (739) penetrates through the second measuring rod (736) and is respectively matched with the first circular hole (734) or the second circular hole (735), and the other end of the second measuring rod (736) is respectively provided with a rectangular hole (7310).

5. The foldable portable surveying pole for UAV surveying according to claim 4, characterized in that: The extension measuring component further includes a third measuring rod (7311), the other end of the second measuring rod (736) is rotatably connected with the third measuring rod (7311), the other side of the third measuring rod (7311) is provided with a fixing groove (7312), a front extension damping rod (7313) is fixedly connected to the inner wall of the fixing groove (7312), one end of the front extension damping rod (7313) is fixedly connected with a butt-in board (7314), one end of the butt-in board (7314) is matched with the rectangular hole (7310) in plug-in manner, and the second measuring assembly (76) has the same structure as the first measuring assembly (73).

6. The foldable portable surveying pole for UAV surveying according to claim 5, characterized in that: The auxiliary connecting assembly (9) includes a rectangular block (91), the top surface of the square plate (4) is fixedly connected with the rectangular block (91), one side of the rectangular block (91) is fixedly connected with a connecting damping rod (92), one end of the connecting damping rod (92) is fixedly connected with a plug rod (93), and one end of the plug rod (93) is matched with the rectangular sleeve (8) in plug-in manner.