Positioning structure of a remote sensing plotter

Abstract

The present application relates to the technical field of remote sensing surveying and mapping instrument, especially to a positioning structure of remote sensing surveying and mapping instrument, which comprises a mounting mainboard and a supporting table, the supporting table is located below the mounting mainboard, the mounting mainboard and the supporting table are connected through a linkage structure, the inside of the supporting table is a cavity, an air pump is installed on the upper surface of the supporting table, a supporting structure is communicated and installed on the bottom surface of the supporting table, the supporting structure comprises an upper rod and a one-way air shaft, the one-way air shaft is communicated and installed on the bottom surface of the supporting table, the upper end of the upper rod is elastically rotatably sleeved on the outer surface of the one-way air shaft, the inside of the upper rod is communicated with the inside of the one-way air shaft, and the lower end of the upper rod is elastically connected with a rotatable lower rod in communication. The present application can drive the grounding structure to contact the ground after the corresponding extension leg, push the plug plate close to the plug groove after the airflow enters the air cavity, fix the position of the extension leg relative to the lower rod, and make the extension legs of different positions stable the supporting table through the extension of the lower rod with different lengths.

Description

Technical Field

[0001] This invention relates to the technical field of remote sensing mapping instruments, and in particular to a positioning structure for a remote sensing mapping instrument. Background Technology

[0002] Remote sensing mapping technology collects electromagnetic wave information from the Earth's surface using sensors (such as cameras, radar, and infrared detectors) mounted on platforms like aircraft, satellites, and drones. It is a crucial tool in fields such as topographic mapping and environmental monitoring. The positioning structure of the mapping instrument directly impacts the accuracy and efficiency of data acquisition.

[0003] In existing technologies, remote sensing mapping instruments often employ self-propelled, manually propelled, or bracket-type mobile structures, with the brackets relying on support legs to adjust height and balance. For example, Chinese patent CN113551128A discloses an outdoor remote sensing mapping instrument that improves portability through a retractable bracket and dust-cleaning structure. However, its support legs require individual angle adjustments to adapt to uneven ground, making operation cumbersome and difficult to guarantee the stability of multiple legs working together. This results in the instrument being easily affected by ground undulations, leading to a decrease in measurement accuracy.

[0004] In addition, when operating in complex terrains in the field (such as mountains and deserts), traditional scaffolds require repeated manual adjustments to the height and tilt of the support legs, which is time-consuming and relies on the experience of the operators, making it difficult to respond quickly to changes in terrain.

[0005] Therefore, existing remote sensing mapping technologies have significant shortcomings in dynamic leveling and adaptive support, especially on non-horizontal ground where unstable support can easily lead to data errors, failing to meet the requirements of high-precision mapping. Summary of the Invention

[0006] To address the aforementioned issues, this application, based on the research findings of the National Natural Science Foundation of China Youth Project "Research on Weak Signal Perception of Technological Demand under the Technological Competition Situation" (Project No.: 72404081), proposes an improved terrain-adaptive adjustment mechanism and a positioning structure for remote sensing mapping instruments with active leveling function to identify more accurate signals.

[0007] The present invention provides a positioning structure for a remote sensing mapping instrument, which adopts the following technical solution: it includes a mounting motherboard and a support platform, the support platform is located below the mounting motherboard, the mounting motherboard and the support platform are connected by a linkage structure, the support platform has a cavity inside, an air pump is installed on the upper surface of the support platform, and a support structure is installed on the bottom surface of the support platform.

[0008] The support structure includes an upper rod and a one-way ventilation shaft. The one-way ventilation shaft is connected and installed on the bottom surface of the support platform. The upper end of the upper rod is elastically rotatably sleeved on the outer surface of the one-way ventilation shaft. The interior of the upper rod is connected to the interior of the one-way ventilation shaft. The lower end of the upper rod is elastically connected to a rotatable lower rod. The upper end of the upper rod is connected to an annular pneumatic telescopic tube A, which extends through the bottom surface of the support platform. An annular pneumatic telescopic tube B is also installed on the upper rod. The other end of the annular pneumatic telescopic tube B is connected to the lower rod.

[0009] The lower end of the lower rod is connected to a slidable extension leg, which is connected to a slidable grounding structure. Inside the extension leg, there is a unidirectional structure that limits the upward movement of the grounding structure. An air chamber is opened inside the extension leg, and an insert plate is elastically slidably inserted into the inner wall of the air chamber. The lower rod has a slot on the inner wall corresponding to the insert plate, and the air chamber is connected to the inside of the extension leg.

[0010] Optionally, the linkage structure includes an outer spherical sleeve and an inner sphere. The outer spherical sleeve is larger than the hemisphere and is fitted onto the outer surface of the inner sphere. An outer riser is installed through the bottom surface of the inner sphere. A movable tube that can slide up and down is inserted into the upper end of the outer riser. The lower end of the movable tube is elastically connected to the inner wall of the outer riser. A rotatable linkage spherical shell is inserted into the inner sphere. A misaligned tube is rotatably inserted into the upper surface of the outer riser. A rod is installed on the circumferential surface of the movable tube. A spiral groove is opened in the inner wall of the misaligned tube. The rod slides through the inner wall of the outer riser and is slidably inserted into the spiral groove. The outer surface of the inner sphere is fixed to the upper surface of the support platform.

[0011] The inner sphere has a sandwich layer, and the outer surface of the inner sphere has a vent hole communicating with the sandwich layer. The inner wall of the inner sphere has a vent hole communicating with the sandwich layer. The upper part of the inner sphere has a through hole that does not communicate with the sandwich layer. A top rod is slidably inserted into the through hole. One end of the top rod is elastically connected to the inner sphere. A bending plate is set on one side of the top rod inside the inner sphere. The bending plate is fixed to the linkage shell. The two ends of the bending plate are at different distances from the center of the inner sphere. A blocking ball is set inside the inner sphere. The diameter of the blocking ball is larger than the inner diameter of the movable tube. The axis of the support platform coincides with the center of the inner sphere. A counterweight block is detachably installed at the center of the bottom surface of the support platform.

[0012] Optionally, an air ring is coaxially fixed to the outer side of the outer riser, the air pump suction end is fixedly connected to the circumferential side of the air ring, a pressure vent pipe is installed on the bottom surface of the air ring, the other end of the pressure vent pipe is connected to the lower end of the outer riser, and a pressure relief valve is installed at the lower end of the outer riser below the movable pipe.

[0013] Optionally, multiple balance bars are evenly arranged below the outer spherical sleeve along the axis of the outer tube. The lower end of the balance bar is slidably sleeved with the outer tube, which is connected to the inside of the air ring. The balance bar and the outer tube are elastically connected. Both the balance bar and the outer tube are arc-shaped, and the arc axis of the balance bar and the outer tube coincides with the center of the inner sphere.

[0014] Optionally, the one-way ventilation shaft has an upper ventilation groove A at one end inside the upper rod, and an upper ventilation groove B communicating with the upper ventilation groove A is provided on the inner wall of the upper rod.

[0015] The upper rod and the lower rod are connected by a connecting shaft. The upper rod is rotatably sleeved on the outer surface of the connecting shaft. The connecting shaft is fixedly connected to the upper end of the lower rod. A lower venting groove A is opened at one end of the connecting shaft inside the upper rod. A lower venting groove B, which is connected to the lower venting groove A, is opened on the inner wall of the upper rod.

[0016] Optionally, the annular pneumatic telescopic tube A includes a solid rod A and a sleeve A. The sleeve A is slidably sleeved on the outer surface of the solid rod A. The solid rod A is fixed to the upper rod. The sleeve A penetrates the bottom surface of the support platform. The end face of the sleeve A inside the support platform is open. The solid rod A and the sleeve A are uniformly arc-shaped. Both the solid rod A and the sleeve A are coaxially arranged with the lower end of the one-way ventilation shaft.

[0017] The annular pneumatic telescopic tube B includes a solid rod B and a sleeve B. The sleeve B is slidably fitted onto the outer surface of the solid rod B. The sleeve B is provided with an inner layer. The end of the sleeve B away from the solid rod B is connected to the inner layer. The sleeve B is connected and installed with the upper rod. The solid rod B is fixed to the lower rod. Both the solid rod B and the sleeve B are arc-shaped. Both the solid rod B and the sleeve B are coaxial with the connecting shaft.

[0018] Optionally, both the connecting shaft and the one-way ventilation shaft are slidably fitted with inner ratchet wheels at their lower ends. Both the connecting shaft and the one-way ventilation shaft are equipped with elastically rotatable ratchet teeth, which mesh with the inner annular surfaces of adjacent inner ratchet wheels. The two inner ratchet wheels are connected by a parallel plate, which is parallel to the upper rod and elastically connected to the upper rod.

[0019] Optionally, the upper end of the lower rod has an end cavity, and the lower rod has a sliding cavity below the end cavity. A through tube is fixedly inserted through the bottom wall of the end cavity, and the extension leg is slidably inserted into the sliding cavity and slidably sleeved on the outer surface of the through tube.

[0020] A cone head is slidably inserted at the connection between the air chamber and the extension leg. The cone head is elastically connected to the inner wall of the air chamber, and the lower end of the cone head is located inside the extension leg.

[0021] The grounding structure includes a grounding rod and a sliding plate. The grounding rod is rotatably inserted into the bottom surface of the sliding plate, and the sliding plate is slidably inserted into the inside of the extension leg. The sliding plate is located below the cone head, and a horizontal groove is opened on the upper surface of the sliding plate. The lower end of the grounding rod slides through the inner bottom wall of the extension leg.

[0022] The unidirectional structure includes a right-angle head with an inclined bottom surface. The right-angle head is horizontally movable and elastically connected to the inner wall of the extension leg. The circumferential surface of the grounding rod has multiple grooves, and the right-angle head is located inside the grooves.

[0023] Optionally, the inserts located on the same side of the extension leg axis are arranged in multiple groups evenly. The distance between two adjacent inserts in the same group gradually increases from top to bottom, and the thickness of the insert is equal to the height of the inner wall of the slot.

[0024] In summary, the present invention has the following beneficial technical effects:

[0025] This invention utilizes components such as extension legs, an upper rod, a lower rod, and slots. Airflow propels the annular pneumatic telescopic tube A to extend, pushing the lower end of the upper rod away from the support platform axis. Airflow enters the upper rod through a one-way ventilation shaft, then propels the annular pneumatic telescopic tube B to extend, causing the lower rod to open, connecting the upper and lower rods. Airflow pushes the extension legs downwards. After the corresponding extension leg contacts the grounding structure, the grounding structure stops moving due to ground obstruction. The extension leg then moves downwards relative to the grounding structure. After airflow enters the air chamber, it pushes the insert plate close to the slot. After the insert plate is inserted into the slot, the position of the extension leg relative to the lower rod is fixed. After all grounding structures contact the ground, the insert plate in the corresponding extension leg is inserted into the corresponding slot. This allows the extension legs at different positions to stably support the support platform even on uneven ground by extending different lengths from the lower rod. This invention, through the arrangement of components such as an outer riser, a linkage spherical shell, a counterweight, a blocking ball, and a plug rod, allows the balance bar to detach from the support of the outer spherical shell under the suction of the air pump when the air pump starts. First, external force supports the mounting plate. Then, the support platform rotates to a horizontal position under the action of the counterweight. Simultaneously, after the support platform is horizontal, the blocking ball inside the inner spherical shell seals the movable tube under gravity. The movable tube moves downward under the suction of the air pump, causing the plug rod to move within the threaded groove, which in turn causes the misalignment ring, the linkage spherical shell, and the bending plate to rotate. The bending plate then rotates... When activated, the push rod is pushed away from the center of the inner ball and pressed against the outer side of the outer ball sleeve, fixing the inner ball and outer ball sleeve together. After the upper rod, lower rod, and extension leg are extended and the air pump is stopped, the movable tube returns to its original position under the elastic connection with the outer riser. Then, the bending plate disengages from pushing the push rod, allowing the outer ball sleeve to rotate relative to the inner ball again. Then, all the balance bars move upward under the elastic connection with the corresponding outer tubes to support the bottom surface of the outer ball sleeve, pushing the mounting main board parallel to the support platform, thereby ensuring that the instrument mounted on the mounting main board is in a horizontal position. This invention, by setting components such as a cone, sliding plate, and transverse groove, uses the cone to elastically separate the air chamber from the extension leg. When the extension leg moves outward from the lower rod, the airflow will not enter the air chamber. After the push rod contacts the ground and moves upward relative to the extension leg, the sliding plate contacts the cone, pushing the cone to disengage from the air chamber. Then, the airflow in the extension leg enters the air chamber through the transverse groove, and then the airflow pushes the push plate into the slot. The limitation on the distance the extension leg extends relative to the upper rod provides stable support for the support platform. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the distribution structure of the outer ball sleeve and the balance bar in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the connection between the bent plate and the linkage spherical shell in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the connection between the insert rod and the spiral groove in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the connection between the support platform and the counterweight block in an embodiment of the present invention;

[0031] Figure 6 This is a front view schematic diagram of some structures in an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the connection between the upper rod and the one-way ventilation shaft in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the connection between the solid rod B and the sleeve B in an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the connection between the sliding plate and the ground pole in an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the connection between the groove and the right-angle head in an embodiment of the present invention.

[0036] Reference numerals: 1. Mounting motherboard; 2. Support platform; 3. Air pump; 4. Support structure; 41. Upper rod; 42. One-way ventilation shaft; 421. Upper ventilation slot A; 422. Upper ventilation slot B; 43. Lower rod; 431. End cavity; 432. Sliding cavity; 433. Through pipe; 44. Annular pneumatic telescopic tube A; 441. Solid rod A; 442. Sleeve A; 45. Annular pneumatic telescopic tube B; 451. Solid rod B; 452. Sleeve B; 46. Extension leg; 47. Grounding structure; 471. Grounding rod; 472. Slide plate; 473. Horizontal groove; 48. One-way structure; 481. Right angle head; 482. Groove; 49. Insert plate; 410. Air chamber 4101, Cone head; 411, Slot; 412, Connecting shaft; 4121, Lower vent groove A; 4122, Lower vent groove B; 413, Ratchet; 414, Inner ratchet wheel; 415, Parallel plate; 5, Linkage structure; 51, Outer ball sleeve; 511, Balance bar; 512, Outer tube; 52, Inner ball; 521, Vent hole; 522, Vent hole; 523, Perforation; 524, Top rod; 525, Bending plate; 526, Ball plug; 53, Outer riser; 531, Air ring; 532, Pressure vent pipe; 533, Pressure relief valve; 54, Movable tube; 55, Linkage ball shell; 56, Misalignment tube; 57, Spiral groove; 58, Insert rod; 59, Counterweight. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-10 The present invention will be described in further detail below.

[0038] This invention discloses a positioning structure for a remote sensing mapping instrument. For example... Figures 1-10 As shown, it includes a mounting motherboard 1 and a support platform 2. The support platform 2 is located below the mounting motherboard 1, and the surveying instrument is mounted on the upper surface of the mounting motherboard 1.

[0039] The main board 1 and the support platform 2 are connected by a linkage structure 5. The support platform 2 has a hollow interior and an air pump 3 is installed on the upper surface of the support platform 2.

[0040] The linkage structure 5 includes an outer spherical sleeve 51 and an inner sphere 52. The outer spherical sleeve 51 is larger than the hemisphere, so that the inner sphere 52 will not detach from the outer spherical sleeve 51. The outer spherical sleeve 51 is fitted onto the outer surface of the inner sphere 52, and the inner sphere 52 can rotate within the spherical surface of the outer spherical sleeve 51.

[0041] An outer riser 53 is installed through the bottom surface of the inner ball 52. A movable tube 54 that can slide up and down is inserted into the upper end of the outer riser 53. The lower end of the movable tube 54 is elastically connected to the inner wall of the outer riser 53. The elastic connection between the movable tube 54 and the outer riser 53 is a spring, which has the tendency to push the movable tube 54 to move upward. The upper end surface of the movable tube 54 is adapted to the inner surface of the inner ball 52. An air ring 531 is coaxially fixed to the outer side of the outer riser 53. The suction end of the air pump 3 is fixedly connected to the circumferential side of the air ring 531. A pressure vent pipe 532 is installed on the bottom surface of the air ring 531. The other end of the pressure vent pipe 532 is connected to the lower end of the outer riser 53. The pressure vent pipe 532 will only open after it receives a certain air pressure, allowing the air ring 531 to draw air from the outer riser 53. A pressure relief valve 533 is installed at the lower end of the outer riser 53 below the movable tube 54.

[0042] Below the outer ball sleeve 51, multiple balance bars 511 are evenly arranged along the axis of the outer riser 53. The lower end of each balance bar 511 is slidably sleeved with an outer tube 512. The outer tube 512 is internally connected to the air ring 531. The balance bars 511 and outer tube 512 are elastically connected, and the balance bars 511 and outer tube 512 can be connected by an elastic structure such as a spring, giving them a tendency to move outwards from the outer tube 512. Both the balance bars 511 and the outer tube 512 are arc-shaped. The arc axis of the balance bar 511 and the outer tube 512 coincides with the center of the inner ball 52. The pressure vent pipe 532 ensures that after the suction of the air pump 3 pulls the balance bar 511 into the outer tube 512, the pressure vent pipe 532 opens under the air pressure suction to draw air into the outer riser 53. When the air pump 3 stops, the elasticity between the outer tube 512 and the balance bar 511 pushes the balance bar 511 upward to evenly support the bottom surface of the outer ball sleeve 51, so that the support platform 2 and the mounting main plate 1 remain parallel.

[0043] A rotatable linkage spherical shell 55 is inserted inside the inner ball 52. A misaligned tube 56 is rotatably inserted into the upper end face of the outer riser 53. An insert rod 58 is installed on the circumferential surface of the movable tube 54. A spiral groove 57 is opened on the inner wall of the misaligned tube 56. The insert rod 58 slides through the inner wall of the outer riser 53 and is slidably inserted into the spiral groove 57. The outer surface of the inner ball 52 is fixed to the upper surface of the support platform 2. A blocking ball 526 is set inside the inner ball 52. The diameter of the blocking ball 526 is larger than the inner diameter of the movable tube 54, so that the blocking ball 526 slides with the movable tube 54 inside the outer riser 53. When the blocking ball 526 moves to the upper end position of the movable tube 54, the blocking ball 526 blocks the upper end of the movable tube 54. Then, under the blocking of the blocking ball 526, the movable tube 54 moves downward under the suction of the air pump 3, which drives the insert rod 58 to move downward and slide in the spiral groove 57, which can push the misaligned tube 56 and the linkage spherical shell 55 to rotate.

[0044] The inner sphere 52 has a sandwich layer, and the outer surface of the inner sphere 52 has a vent hole 522 that communicates with the sandwich layer. The inner wall of the inner sphere 52 has a vent hole 521 that communicates with the sandwich layer. Before the plug sphere 526 blocks the movable tube 54, the airflow communicates with the external environment through the vent hole 521 and the vent hole 522.

[0045] The upper part of the inner sphere 52 has a perforation 523 that is not connected to the interlayer. A push rod 524 is slidably inserted into the perforation 523. One end of the push rod 524 is elastically connected to the inner sphere 52. A bending plate 525 is provided on one side of the push rod 524 inside the inner sphere 52. The bending plate 525 is fixed to the linkage spherical shell 55. The two ends of the bending plate 525 are at different distances from the center of the inner sphere 52. The axis of the support platform 2 coincides with the center of the inner sphere 52. When the misalignment tube 56 drives the linkage spherical shell 55 to rotate, the bending plate 525 follows the linkage sphere. The shell 55 rotates and pushes the top rod 524 close to the inner wall of the outer ball sleeve 51, fixing the outer ball sleeve 51 and the inner ball 52 together. A counterweight 59 is detachably installed at the center of the bottom surface of the support platform 2. The axis of the counterweight 59, the central axis of the support platform 2 and the center of the inner ball 52 coincide. After the balance bar 511 is disengaged from the support of the outer ball sleeve 51, the main board 1 is supported by the external support. The main board 1 can be installed by a person holding it. The support platform 2 can rotate to a horizontal state under the counterweight 59. At this time, the blocking ball 526 rotates to the upper port of the movable tube 54.

[0046] The bottom surface of the support platform 2 is connected to the support structure 4.

[0047] The support structure 4 includes an upper rod 41 and a one-way ventilation shaft 42. The one-way ventilation shaft 42 is connected and installed on the bottom surface of the support platform 2. The upper end of the upper rod 41 is elastically rotatably sleeved on the outer surface of the one-way ventilation shaft 42. The upper rod 41 and the one-way ventilation shaft 42 are connected by a torsion spring, which has the tendency to drive the lower end of the upper rod 41 to rotate towards the axis of the support platform 2. The interior of the upper rod 41 is connected to the interior of the one-way ventilation shaft 42. Airflow flows unidirectionally into the upper rod 41 through the one-way ventilation shaft 42. The one-way ventilation shaft 42 is provided with an upper ventilation groove A421 at one end inside the upper rod 41. The inner wall of the upper rod 41 is provided with an upper ventilation groove B422 that communicates with the upper ventilation groove A421. After the upper rod 41 rotates downward to the maximum angle, the upper ventilation groove A421 and the upper ventilation groove B422 are connected.

[0048] The lower end of the upper rod 41 is elastically connected to a rotatable lower rod 43. Both the upper rod 41 and the lower rod 43 are equipped with venting valves. When the device needs to be retracted, the gas inside the upper rod 41 and the lower rod 43 is vented. The upper rod 41 and the lower rod 43 are connected by a connecting shaft 412. The upper rod 41 is rotatably sleeved on the outer surface of the connecting shaft 412. The connecting shaft 412 is fixedly connected to the upper end of the lower rod 43. The connecting shaft 412 is located inside the upper rod 41 and has a lower venting groove A4121. The inner wall of the upper rod 41 has a lower venting groove B4122 that communicates with the lower venting groove A4121. When the lower rod 43 is rotated to a vertical position, the lower venting groove A4121 and the lower venting groove B4122 communicate, and the gas inside the upper rod 41 can fill the lower rod 43.

[0049] Both the connecting shaft 412 and the one-way ventilation shaft 42 have inner ratchet wheels 414 slidably sleeved at their lower ends. Both the connecting shaft 412 and the one-way ventilation shaft 42 are equipped with elastically rotatable ratchet teeth 413. The ratchet teeth 413 are elastically connected to the connecting shaft 412 and the one-way ventilation shaft 42 via torsion springs. The ratchet teeth 413 mesh with the inner annular surfaces of adjacent inner ratchet wheels 414. When the ratchet teeth 413 connected to the one-way ventilation shaft 42 mesh with the corresponding inner ratchet wheels 414, the lower end of the upper rod 41 can only rotate unidirectionally away from the axis of the support platform 2. When the ratchet teeth 413 connected to the connecting shaft 412 mesh with the corresponding inner ratchet wheels 414, the lower rod 43 can only rotate unidirectionally relative to the upper rod 43. When rod 41 rotates downward, two inner ratchet wheels 414 are connected by a parallel plate 415. The parallel plate 415 is parallel to the upper rod 41 and is elastically connected to the upper rod 41. The elastic connection can be a spring, an elastic telescopic rod, or an elastically deformable structure, which has the tendency to drive the inner ratchet wheels 414 to engage with the corresponding ratchet teeth 413. By pushing the parallel plate 415 closer to the upper rod 41, the inner ratchet wheels 414 can be driven to disengage from the ratchet teeth 413, thereby driving the upper rod 41 and the lower rod 43 to reset. The upper rod 41 is provided with a notch that allows the upper rod 41 to enter. When the lower rod 43 resets, it can be retracted into the notch of the upper rod 41.

[0050] The upper end of the upper rod 41 is connected to an annular pneumatic telescopic tube A44, which passes through the bottom surface of the support platform 2. The upper rod 41 is connected to an annular pneumatic telescopic tube B45, and the other end of the annular pneumatic telescopic tube B45 is connected to the lower rod 43.

[0051] The annular pneumatic telescopic tube A44 includes a solid rod A441 and a sleeve A442. The sleeve A442 is slidably fitted onto the outer surface of the solid rod A441. The solid rod A441 is fixed to the upper rod 41. The sleeve A442 penetrates the bottom surface of the support platform 2. The end face of the sleeve A442 inside the support platform 2 is open. The solid rod A441 and the sleeve A442 are uniformly arc-shaped. Both the solid rod A441 and the sleeve A442 are coaxially arranged with the lower end of the one-way ventilation shaft 42. The airflow from the support platform 2 enters the sleeve A442 and tends to push the solid rod A441 outward from the sleeve A442, thus pushing the upper rod 41 to rotate.

[0052] The annular pneumatic telescopic tube B45 includes a solid rod B451 and a sleeve B452. The sleeve B452 is slidably fitted onto the outer surface of the solid rod B451. The sleeve B452 is provided with an inner layer. The end of the sleeve B452 away from the solid rod B451 is connected to the inner layer. The sleeve B452 is connected and installed with the upper rod 41. The solid rod B451 is fixed to the lower rod 43. Both the solid rod B451 and the sleeve B452 are arc-shaped. Both the solid rod B451 and the sleeve B452 are coaxial with the connecting shaft 412. The airflow in the upper rod 41 enters the sleeve B452, pushing the solid rod B451 to move outward from the sleeve B452, and pushing the lower rod 43 to rotate around the connecting shaft 412.

[0053] The lower end of the lower rod 43 is connected to a slidable extension leg 46. The upper end of the lower rod 43 has an end cavity 431. The lower rod 43 has a sliding cavity 432 located below the end cavity 431. A through tube 433 is fixedly inserted through the bottom wall of the end cavity 431. The extension leg 46 is slidably inserted into the sliding cavity 432 and slidably sleeved on the outer surface of the through tube 433.

[0054] The extension leg 46 is connected to a slidable grounding structure 47, which includes a grounding rod 471 and a sliding plate 472. The grounding rod 471 is rotatably inserted into the bottom surface of the sliding plate 472. When the extension leg 46 slides out from the sliding cavity 432, the grounding rod 471 first contacts the ground, and then the air pressure continues to apply a pushing force to the extension leg 46, causing the grounding rod 471 to gradually retract into the extension leg 46. The sliding plate 472 is slidably inserted into the inside of the extension leg 46. The sliding plate 472 is located below the cone head 4101. A transverse groove 473 is opened on the upper surface of the sliding plate 472. The lower end of the grounding rod 471 slides through the inner bottom wall of the extension leg 46.

[0055] The extension leg 46 is equipped with a unidirectional structure 48 that moves upward in one direction, which is a limited grounding structure 47. The unidirectional structure 48 includes a right-angle head 481 with an inclined bottom surface. The right-angle head 481 is horizontally movable and elastically connected to the inner wall of the extension leg 46. The elastic connection between the right-angle head 481 and the extension leg 46 can be a spring, an elastic telescopic rod, or other elastic structure that can push the right-angle head 481 to elastically approach the grounding rod 471. The grounding rod 471 has multiple grooves 482 on its circumferential surface. The right-angle head 481 is located inside the grooves 482. The two ends of the grooves 482 are smoothly connected to the circumferential surface of the grounding rod 471. When the grounding rod 471 is rotated, the right-angle head 481 can be disengaged from the grooves 482, and then the grounding rod 471 can be pulled out from the extension leg 46.

[0056] An air chamber 410 is provided inside the extension leg 46. An insert plate 49 is elastically slidably inserted into the inner wall of the air chamber 410. A slot 411 is provided on the inner wall of the lower rod 43 corresponding to the insert plate 49. The insert plates 49 located on the same side of the axis of the extension leg 46 are arranged in multiple groups evenly. The distance between two adjacent insert plates 49 in the same group gradually increases from top to bottom, so that when the extension leg 46 is in different positions in the sliding cavity 432, there is a corresponding insert plate 49 inserted into the corresponding slot 411. The thickness of the insert plate 49 is equal to the height of the inner wall of the slot 411, so that the insert plate 49 can be inserted into the slot 411. The air chamber 410 is connected to the interior of the extension leg 46.

[0057] After the upper rod 41, lower rod 43 and extension leg 46 are opened and the air pump 3 is stopped, the movable tube 54 returns to its original position under the elastic connection with the outer riser tube 53. Then the bending plate 525 disengages from the push on the insertion rod 58, allowing the outer ball sleeve 51 to rotate relative to the inner ball 52 again. Then all the balance bars 511 move upward under the elastic connection with the corresponding outer tube 512 to support the bottom surface of the outer ball sleeve 51, pushing the mounting main board 1 parallel to the support platform 2, thereby making the instrument mounted on the mounting main board 1 horizontal.

[0058] A cone head 4101 is slidably inserted at the connection between the air chamber 410 and the extension leg 46. The cone head 4101 is elastically connected to the inner wall of the air chamber 410. The lower end of the cone head 4101 is located inside the extension leg 46. Before the slide plate 472 contacts the cone head 4101, the cone head 4101 separates the inside of the air chamber 410 from the extension leg 46, preventing the insertion plate 49 from being inserted into the slot 411 before the ground rod 471 contacts the ground. When the slide plate 472 pushes the cone head 4101 upward, the airflow can enter the air chamber 410, pushing the insertion plate 49 away from the axis of the extension leg 46, so that the insertion plate 49 is inserted into the corresponding slot 411, fixing the length of the extension leg 46 extending the lower rod 43. After all the ground rods 471 contact the ground, the insertion plate 49 in the corresponding extension leg 46 is inserted into the corresponding slot 411, so that the extension legs 46 at different positions can stably support the support platform 2 when the ground is uneven by extending the lower rod 43 by different lengths.

[0059] The working principle is as follows: When support is needed, the air pump 3 is activated to inflate the support platform 2. The airflow pushes the annular pneumatic telescopic tube A44 to extend, pushing the lower end of the upper rod 41 away from the axis of the support platform 2. After the upper rod 41 is extended to its maximum angle, it connects with the one-way ventilation shaft 42. The airflow enters the upper rod 41 through the one-way ventilation shaft 42, and then enters the annular pneumatic telescopic tube B45, pushing the annular pneumatic telescopic tube B45 to extend. This causes the lower rod 43 to rotate downward relative to the upper rod 41 and extend. After the lower rod 43 is extended to its maximum angle, the upper rod 41 connects with the lower rod 43, and the airflow enters the lower rod 43 to push the extension leg 46 downward. When the corresponding extension leg 46 drives the grounding structure 47 to contact the ground, the grounding structure 47 stops moving due to the ground obstruction. The extension leg 46 moves downward relative to the grounding structure 47. After the airflow enters the air chamber 410, it pushes the insert plate 49 close to the slot 411. After the insert plate 49 is inserted into the slot 411, the length of the extension leg 46 extending the lower rod 43 is fixed. After all the grounding structures 47 are in contact with the ground, the insert plate 49 in the corresponding extension leg 46 is inserted into the corresponding slot 411, so that the extension legs 46 at different positions can stably support the support platform 2 when the ground is uneven by extending the lower rod 43 at different lengths.

[0060] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A positioning structure for a remote sensing mapping instrument, comprising a mounting motherboard (1) and a support platform (2), wherein the support platform (2) is located below the mounting motherboard (1), characterized in that: The mounting motherboard (1) and the support platform (2) are connected by a linkage structure (5). The support platform (2) has a cavity inside. An air pump (3) is installed on the upper surface of the support platform (2). A support structure (4) is installed on the bottom surface of the support platform (2). The support structure (4) includes an upper rod (41) and a one-way ventilation shaft (42). The one-way ventilation shaft (42) is connected to the bottom surface of the support platform (2). The upper end of the upper rod (41) is elastically rotatably sleeved on the outer surface of the one-way ventilation shaft (42). The interior of the upper rod (41) is connected to the interior of the one-way ventilation shaft (42). The lower end of the upper rod (41) is elastically connected to a rotatable lower rod (43). The upper end of the upper rod (41) is connected to an annular pneumatic telescopic tube A (44). The annular pneumatic telescopic tube A (44) is connected to penetrate the bottom surface of the support platform (2). The upper rod (41) is connected to an annular pneumatic telescopic tube B (45). The other end of the annular pneumatic telescopic tube B (45) is connected to the lower rod (43). The lower end of the lower rod (43) is connected to a slidable extension leg (46), the extension leg (46) is connected to a slidable grounding structure (47), the extension leg (46) is installed with a unidirectional structure (48) that limits the upward movement of the grounding structure (47), the extension leg (46) is provided with an air cavity (410), the inner wall of the air cavity (410) is elastically slidably connected with a plate (49), the lower rod (43) is provided with a slot (411) on the inner wall of the plate (49), and the air cavity (410) is connected to the inside of the extension leg (46). The one-way ventilation shaft (42) is located inside the upper rod (41) and has an upper ventilation groove A (421) at one end. The upper rod (41) has an upper ventilation groove B (422) that communicates with the upper ventilation groove A (421) on the inner wall. The upper rod (41) and the lower rod (43) are connected by a connecting shaft (412). The upper rod (41) is rotatably sleeved on the outer surface of the connecting shaft (412). The connecting shaft (412) is fixedly connected to the upper end of the lower rod (43). The connecting shaft (412) is located inside the upper rod (41) and has a lower ventilation groove A (4121) at one end. The upper rod (41) has a lower ventilation groove B (4122) connected to the lower ventilation groove A (4121) on its inner wall. The annular pneumatic telescopic tube A (44) includes a solid rod A (441) and a sleeve A (442). The sleeve A (442) is slidably sleeved on the outer surface of the solid rod A (441). The solid rod A (441) is fixed to the upper rod (41). The sleeve A (442) penetrates the bottom surface of the support platform (2). The end face of the sleeve A (442) inside the support platform (2) is open. The solid rod A (441) and the sleeve A (442) are uniformly arc-shaped. The solid rod A (441) and the sleeve A (442) are both coaxially arranged with the lower end of the one-way ventilation shaft (42). The annular pneumatic telescopic tube B (45) includes a solid rod B (451) and a sleeve B (452). The sleeve B (452) is slidably sleeved on the outer surface of the solid rod B (451). The sleeve B (452) is provided with an inner layer. The end of the sleeve B (452) away from the solid rod B (451) is connected to the inner layer. The sleeve B (452) is connected to the upper rod (41) and installed. The solid rod B (451) is fixed to the lower rod (43). Both the solid rod B (451) and the sleeve B (452) are arc-shaped. Both the solid rod B (451) and the sleeve B (452) are coaxial with the connecting shaft (412).

2. The positioning structure of a remote sensing mapping instrument according to claim 1, characterized in that: The linkage structure (5) includes an outer ball sleeve (51) and an inner ball (52). The outer ball sleeve (51) is larger than the hemisphere. The outer ball sleeve (51) is fitted onto the outer surface of the inner ball (52). An outer riser (53) is installed through the bottom surface of the inner ball (52). A movable tube (54) that can slide up and down is inserted into the upper end of the outer riser (53). The lower end of the movable tube (54) is elastically connected to the inner wall of the outer riser (53). A rotatable linkage spherical shell (55) is inserted into the inner ball (52). A misaligned tube (56) is rotatably inserted into the upper end surface of the outer riser (53). A rod (58) is installed on the circumferential surface of the movable tube (54). A spiral groove (57) is opened in the inner wall of the misaligned tube (56). The rod (58) slides through the inner wall of the outer riser (53). The rod (58) slides into the spiral groove (57). The outer surface of the inner ball (52) is fixed to the upper surface of the support platform (2). The inner sphere (52) has a sandwich layer, and the outer surface of the inner sphere (52) has a vent hole (522) communicating with the sandwich layer. The inner wall of the inner sphere (52) has a vent hole (521) communicating with the sandwich layer. The upper part of the inner sphere (52) has a through hole (523) that does not communicate with the sandwich layer. A push rod (524) is slidably inserted into the through hole (523). One end of the push rod (524) is located inside the inner sphere (52) and is elastically connected to the inner sphere (52). A bending plate (525) is provided on one side inside the inner ball (52). The bending plate (525) is fixed to the linkage ball shell (55). The two ends of the bending plate (525) are at different distances from the center of the inner ball (52). A blocking ball (526) is provided inside the inner ball (52). The diameter of the blocking ball (526) is larger than the inner diameter of the movable tube (54). The axis of the support platform (2) coincides with the center of the inner ball (52). A counterweight (59) can be detachably installed at the center of the bottom surface of the support platform (2).

3. The positioning structure of a remote sensing mapping instrument according to claim 2, characterized in that: An air ring (531) is coaxially fixed on the outside of the outer riser (53). The suction end of the air pump (3) is fixedly connected to the circumferential side of the air ring (531). A pressure vent pipe (532) is installed on the bottom surface of the air ring (531). The other end of the pressure vent pipe (532) is connected to the lower end of the outer riser (53). A pressure relief valve (533) is installed on one end of the outer riser (53) below the movable pipe (54).

4. The positioning structure of a remote sensing mapping instrument according to claim 3, characterized in that: Multiple balance bars (511) are evenly arranged below the outer ball sleeve (51) along the axis of the outer riser (53). The lower end of the balance bar (511) is slidably sleeved with the outer tube (512). The outer tube (512) is connected to the inside of the air ring (531). The balance bar (511) and the outer tube (512) are elastically connected. Both the balance bar (511) and the outer tube (512) are arc-shaped. The arc axis of the balance bar (511) and the outer tube (512) coincides with the center of the inner ball (52).

5. The positioning structure of a remote sensing mapping instrument according to claim 1, characterized in that: The lower ends of the connecting shaft (412) and the one-way ventilation shaft (42) are both slidably fitted with inner ratchet wheels (414). Both the connecting shaft (412) and the one-way ventilation shaft (42) are equipped with elastically rotatable ratchet teeth (413). The ratchet teeth (413) mesh with the inner ring surface of the adjacent inner ratchet wheels (414). The two inner ratchet wheels (414) are connected by a parallel plate (415). The parallel plate (415) is set parallel to the upper rod (41) and is elastically connected to the upper rod (41).

6. The positioning structure of a remote sensing mapping instrument according to claim 1, characterized in that: The lower rod (43) has an end cavity (431) inside its upper end, and a sliding cavity (432) is provided inside the lower rod (43) below the end cavity (431). A through tube (433) is fixedly inserted through the bottom wall of the end cavity (431). The extension leg (46) is slidably inserted into the sliding cavity (432) and slidably sleeved on the outer surface of the through tube (433). A cone (4101) is slidably inserted at the connection between the air chamber (410) and the extension leg (46). The cone (4101) is elastically connected to the inner wall of the air chamber (410), and the lower end of the cone (4101) is located inside the extension leg (46). The grounding structure (47) includes a grounding rod (471) and a sliding plate (472). The grounding rod (471) is rotatably inserted into the bottom surface of the sliding plate (472), and the sliding plate (472) is slidably inserted into the inside of the extension leg (46). The sliding plate (472) is located below the cone head (4101). A transverse groove (473) is provided on the upper surface of the sliding plate (472), and the lower end of the grounding rod (471) slides through the inner bottom wall of the extension leg (46). The unidirectional structure (48) includes a right-angle head (481), the bottom surface of the right-angle head (481) is an inclined surface, the right-angle head (481) is horizontally movable and elastically connected to the inner wall of the extension leg (46), and the circumferential surface of the grounding rod (471) is provided with multiple grooves (482), and the right-angle head (481) is located inside the grooves (482).

7. The positioning structure of a remote sensing mapping instrument according to claim 1, characterized in that: The inserts (49) located on the same side of the axis of the extension leg (46) are arranged in multiple groups evenly. The distance between two adjacent inserts (49) in the same group gradually increases from top to bottom. The thickness of the insert (49) is equal to the height of the inner wall of the slot (411).

Images