Land measurement auxiliary device

Abstract

A land survey auxiliary device disclosed by the present invention comprises an air-drop mechanism, a plurality of mechanical landmarks are stored in the air-drop mechanism, each mechanical landmark comprises a bullet head, a spline shaft and a bullet tail which are all in a vertical revolving body shape, the bullet head, the spline shaft and the bullet tail are coaxially fixed in sequence from bottom to top, a vertical outer support cylinder is coaxially inserted into the spline shaft at a clearance, and the outer support cylinder is provided with a plurality of through holes. A middle baffle is coaxially, hermetically and rotatably connected to the upper middle portion of the inner wall of the outer supporting cylinder, and a horizontal lower baffle is fixed to the bottom end. The effect of double marking is achieved through liquid marking and the rubber balloon. When the mechanical landmark falls to be in contact with the ground, the elastic head firstly makes contact with the ground, under the influence of inertia, the outer supporting barrel overcomes the elastic repulsive force of the main compression spring, continues to move downwards and then resets under the action of the elastic repulsive force of the main compression spring, and in the process, the outer supporting barrel drives the storage barrel and the needle head to move downwards; therefore, the bullet head is used for pushing the needle head upwards.

Description

Technical Field

[0001] The present invention relates to the technical field of land surveying, and in particular to a land surveying auxiliary device. Background Art

[0002] In the process of land surveying, the corresponding surveying tools are selected according to the actual conditions of the land being measured. For land that is vast and lacks reference objects, corresponding landmarks or beacons are often placed in certain special locations for reference. Traditional landmarks are often placed one by one manually, which is very laborious for vast land. For this reason, the technology of using drones to place landmarks has emerged on the market, which can solve this problem well. However, the eye-catching effect of the mechanical landmarks it places is not ideal. In a complex environment, it is difficult to be well observed, which reduces the auxiliary effect on land measurement and highlights the shortcomings of the existing technology. Summary of the invention

[0003] The purpose of the present invention is to provide a land surveying auxiliary device to solve the technical problem that the existing airdroppable mechanical landmarks have an unsatisfactory eye-catching effect.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A land surveying auxiliary device comprises an airdrop mechanism, which stores a plurality of mechanical landmarks, wherein the mechanical landmarks comprise a warhead, a flower axis and a tail, all of which are in the shape of a vertical rotating body, wherein the warhead, flower axis and tail are coaxially fixed in sequence from bottom to top, wherein a vertical outer support tube is inserted in a coaxial gap of the flower axis, a middle baffle is coaxially and sealingly rotatably connected to the middle upper part of the inner wall of the outer support tube, and a horizontal lower baffle is fixed to the bottom end, a push plate is sealably inserted in the outer support tube, and an upper baffle is installed on the top, a vertical inner support tube is fixed to the bottom end of the push plate, and can perform sealed coaxial rotation and sealed up and down sliding compared with the outer support tube, the top end of the upper baffle is in contact with the bottom end of the tail, the inner support tube is sealed and slidably connected to the flower axis and the lower baffle, a plurality of vertical storage tubes are installed below the lower baffle, and a vertical main compression spring is fixed to the bottom end Spring, a supporting ring is fixed at the bottom end of the main compression spring, and the supporting ring is rotatably connected with the bullet on the same axis, and each of the storage cylinders is movably connected with a vertical and hollow needle up and down, and the top of the needle is pointed, and its cavity runs through the upper and lower parts of the needle, and a plurality of rubber plugs are fixed through the bottom of the lower baffle, and the rubber plugs correspond to the needles up and down. A lower air delivery channel is provided in the flower axis, and the bottom of the lower air delivery channel horizontally runs through the flower axis to form a No. 1 air inlet hole, and a storage hose is fixed to the upper part of the tail of the bullet, and a colorful and deflated rubber balloon is fixed on the upper part of the hose, and is connected to the upper part of the lower air delivery channel through an air delivery piece, compressed helium is stored between the push plate and the upper baffle, and eye-catching liquid pigments are stored between the push plate and the lower baffle, and the inner support cylinder blocks the No. 1 air inlet hole.

[0005] On the basis of the above technical scheme, a plurality of vertical lower support tubes are fixed to the bottom end of the lower baffle plate, each of the lower support tubes corresponds to the rubber stopper up and down, and is respectively coaxially threaded with the storage tube, the bottom of the storage tube is in the shape of a step protruding inward, the needle and the lower support tube are movably plugged in up and down, and a limit plate is fixed in the middle of the outer wall, the limit plate is located between the bottom step of the storage tube and the lower support tube, the cavity of the needle horizontally penetrates the upper part of the needle to form a liquid inlet hole, and its cavity coaxially penetrates the bottom end of the needle to form a liquid discharge hole, the liquid discharge hole is always outside the storage tube, and the bottom end of the needle is kept a certain distance from the top of the bullet.

[0006] Based on the above technical solution, the bottom of the needle is coaxially connected to a driving nozzle, the left and right parts of the driving nozzle are horizontally bent in a centrally symmetrical shape compared to the needle, the driving nozzle is located at the top of the bullet, and the liquid pigment is an easily degradable water-based pigment.

[0007] On the basis of the above technical scheme, the upper baffle is sealed and rotatably connected with the inner wall of the storage cylinder, the lower baffle can be sealed and rotated and sealed and slid up and down compared with the inner support cylinder, the upper baffle is sealed and slidably connected with the flower axis, the gas delivery component includes a No. 1 nozzle, an upper gas delivery channel, a No. 3 air inlet, and an auxiliary push plate, a horizontally bent No. 1 nozzle is fixed on the upper part of the flower axis, the No. 1 nozzle is connected with the lower gas delivery channel, an upper gas delivery channel is provided on the upper part of the flower axis, the bottom of the upper gas delivery channel horizontally penetrates the flower axis to form a No. 3 air inlet, the upper part of the upper gas delivery channel is fixedly connected with the bottom of the hose, the No. 3 air inlet and the No. 1 nozzle are located at the bottom of the closed cavity formed by the middle baffle, the outer support cylinder and the upper baffle, and a plurality of vertical auxiliary push plates are fixed at equal angles on the inner circumferential wall of the upper part of the outer support cylinder, the auxiliary push plate is located between the upper baffle and the middle baffle, and horizontally corresponds to the No. 1 nozzle.

[0008] On the basis of the above technical scheme, the airdrop mechanism includes a support seat, a battery, a controller, a connecting component, a stepper motor, a main support tube, a support disk, a storage bin, a guide plate, a main guide groove, a main support platform, a secondary support platform, a left electric push rod, and a secondary guide groove. A battery and a controller are fixed on the top of the support seat, and a connecting component is installed on the top. The controller is electrically connected to the electronic control system of the external drone or electrically connected to the radio transmission module. A vertical stepper motor with a braking function is fixed in the middle of the top of the support seat, and a vertical main support tube is fixed at the bottom. The rotating shaft of the stepper motor passes through the support seat, and a support disk is coaxially fixed at the bottom. A plurality of storage bins are penetrated from top to bottom of the support disk, and are coaxially rotatably connected with the main support tube. Mechanical landmarks are movably inserted in each of the storage bins, and four vertical guide plates are fixed at equal angles on the circumference of the outer circumferential wall of the tail. Four main guide grooves matching the guide plates are penetrated in each of the storage bins, respectively. The cam is an angular channel formed between a pair of camshafts and a pair of camshafts, and the camshafts are connected to the camshafts by a threaded rod and a threaded rod extending along the length of the camshaft to allow the camshaft to move freely along the camshafts.

[0009] On the basis of the above technical scheme, the connecting assembly includes a light rod, a support arm, a lower splint, an upper splint, a screw and a butterfly nut. A horizontal light rod is fixed to the left and right parts of the support seat along the front and rear directions, and a support arm is gap-inserted between the two light rods. The support arm can slide forward and backward and swing left and right along the light rod. A lower splint is fixed to the top of the support arm, and an upper splint made of rubber is placed above the lower splint. Screws parallel to each other are fixed to the left and right parts of the upper splint. The screw is inserted through the lower splint and is threadedly connected with a butterfly nut, and the top of the butterfly nut can abut against the bottom of the lower splint.

[0010] On the basis of the above technical solution, the tail is equipped with a hook mechanism, which includes a rotating arm, a receiving groove, a rotating arm, a roller, a telescopic arm, a secondary compression spring, a hook, and a torsion spring. Three receiving grooves are opened at equal angles on the circumference of the tail, and a rotating arm is hinged up and down in each of the receiving grooves. The part of the rotating arm close to the outer circumferential wall of the tail is rotatably connected to two horizontal rollers, and the two rollers rotatably connected to the rotating arm correspond to each other up and down. The part of the rotating arm close to the axis of the tail is horizontally slidably connected to the telescopic arm, and a secondary compression spring is fixed between the telescopic arm and the rotating arm. The telescopic arm is in the secondary compression spring. The elastic repulsive force of the spring has a tendency to slide away from the telescopic arm, and the part of the telescopic arm away from the rotating arm is fixed with an upwardly bent hook, and the hook is in contact with the side wall of the accommodating groove close to the axis of the spring tail, and the roller rolls and rubs against the inner wall of the storage bin, and a torsion spring is installed between the rotating arm and the spring tail. Under the elastic repulsive force of the torsion spring, the rotating arm always has a tendency to rotate outward and downward, so that the hook gradually disengages from the accommodating groove. After the hook disengages from the accommodating groove, the elastic repulsive force of the torsion spring can make the rotating arm touch the top of the accommodating groove, so that the telescopic arm is horizontal and the hook is downward.

[0011] On the basis of the above technical scheme, the main support cylinder is equipped with a recovery mechanism, which includes a right electric push rod, a clamping arm, a clamping plate, and a needle. A horizontal right electric push rod and a clamping arm are fixed to the right end of the main support cylinder, and a vertical clamping plate is fixed to the right end of the push rod of the right electric push rod. The upper part of the clamping plate is recessed to the left, and a plurality of needles extending to the right are fixed to the upper right end. The right end of the bottom of the clamping plate can be fitted with the left end of the right part of the clamping arm. The tip of the needle is located on the right side of the right end of the bottom of the clamping plate, and the distance between the tip and the right end of the bottom of the clamping plate is not more than twice the thickness of the hose. The right electric push rod is electrically connected to the controller.

[0012] Based on the above technical solution, a ground plug is detachably installed at the bottom of the bullet, and the ground plug includes a ground plug rod and a ground plug plate. The bottom of the bullet is coaxially threaded with a vertical ground plug rod, and a plurality of ground plug plates with pointed lower parts are fixed at equal angles on the circumference of the bottom of the ground plug rod.

[0013] Compared with the prior art, the present invention has the following advantages: the present invention realizes the double marking effect by utilizing the liquid marker and the rubber balloon.

[0014] When the mechanical landmark falls and contacts the ground, the bullet contacts the ground first, and under the influence of inertia, the outer support tube overcomes the elastic repulsion of the main compression spring and continues to move downward, and then resets under the elastic repulsion of the main compression spring. During this process, the outer support tube drives the storage tube and the needle to move downward, thereby using the bullet to push the needle upward, and then the needle pierces the rubber plug and is inserted into the outer support tube, and is squeezed and rubbed by the rubber plug to maintain this state. At this time, the cavity of the needle is connected to the chamber at the bottom of the outer support tube, so that the liquid pigment is discharged from the cavity of the needle and drips on the ground, that is, the land is marked with liquid pigment.

[0015] As the liquid pigment is discharged and the compressed helium is squeezed, the push plate and the inner support tube gradually move downward, and finally the inner support tube releases the blockage of the No. 1 air inlet, so that the compressed helium is filled into the hose and the rubber balloon along the No. 1 air inlet, the lower air transmission channel and the air transmission parts, so that the rubber balloon gradually expands and floats upward. During this period, the hose is dragged upward until it tends to straighten and stop. At this time, the eye-catching color and filled rubber balloon can be easily observed, and the rubber balloon can be blown by the breeze and float with the wind, thereby improving the eye-catching effect and making it easier to be observed, thereby improving the auxiliary effect on land measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the axial side structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the axial structure of the mechanical landmark of the present invention.

[0018] Figure 3 It is a schematic diagram of the partial front section structure of the mechanical landmark of the present invention.

[0019] Figure 4 It is a schematic diagram of the partially enlarged structure of location B of the present invention.

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the upper part of the outer support tube of the present invention.

[0021] Figure 6 It is a schematic diagram of the partially enlarged structure of location C of the present invention.

[0022] Figure 7 It is a schematic diagram of the shaft side structure when the rotating arm and the telescopic arm of the present invention cooperate.

[0023] Figure 8It is a front sectional structural schematic diagram of the support seat and the main support tube of the present invention.

[0024] Fig. 9 It is a bottom view schematic diagram of the main support tube and the support plate of the present invention when they are matched.

[0025] Fig.10 It is a schematic diagram of the partially enlarged structure of location A of the present invention.

[0026] In the figure: 3, warhead, 4, flower axis, 5, tail, 6, outer support tube, 7, middle baffle, 8, lower baffle, 9, push plate, 10, upper baffle, 11, inner support tube, 12, storage tube, 13, main compression spring, 14, support ring, 15, needle, 16, rubber plug, 17, lower air supply channel, 18, No. 1 air inlet, 19, hose, 20, rubber balloon, 22, lower support tube, 23, limit plate, 24, liquid inlet, 25, liquid discharge hole, 26, drive nozzle, 27, No. 1 nozzle, 271, upper air supply channel, 28, No. 3 air inlet, 29, auxiliary push plate, 30, support seat, 31, battery, 32, Controller, 34, stepper motor, 35, main support cylinder, 36, support plate, 37, storage bin, 38, guide plate, 39, main guide groove, 40, main support platform, 41, auxiliary support platform, 42, left electric push rod, 43, auxiliary guide groove, 44, light rod, 45, support arm, 46, lower clamping plate, 47, upper clamping plate, 48, screw, 49, butterfly nut, 51, receiving groove, 52, rotating arm, 53, roller, 54, telescopic arm, 55, auxiliary compression spring, 56, hook, 59, right electric push rod, 60, clamping arm, 61, clamping plate, 62, needle, 63, ground plug, 64, ground plug rod, 65, ground plug plate. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-Figure 10As shown, a land surveying auxiliary device includes an airdrop mechanism, wherein the airdrop mechanism stores a plurality of mechanical landmarks, wherein the mechanical landmarks include a warhead 3, a flower axis 4, and a tail 5, all of which are in the shape of a vertical rotating body, wherein the warhead 3, the flower axis 4, and the tail 5 are coaxially fixed in sequence from bottom to top, wherein a vertical outer support tube 6 is inserted in a coaxial gap of the flower axis 4, wherein a middle baffle plate 7 is coaxially and sealingly rotatably connected to the middle and upper parts of the inner wall of the outer support tube 6, and a horizontal lower baffle plate 8 is fixed to the bottom end, wherein the outer support tube 6 is 6 is sealed and plugged with a push plate 9, and an upper baffle 10 is installed on the top. A vertical inner support tube 11 is fixed at the bottom of the push plate 9, and can be sealed and coaxially rotated and sealed and slid up and down compared with the outer support tube 6. The top of the upper baffle 10 is in contact with the bottom of the spring tail 5. The inner support tube 11 is sealed and slidably connected with the flower axis 4 and the lower baffle 8. A plurality of vertical storage tubes 12 are installed below the lower baffle 8, and a vertical main compression spring 13 is fixed at the bottom. The main compression spring 13 is provided at the bottom of the main baffle 8. A support ring 14 is fixed to the bottom of the spring 13, and the support ring 14 is connected to the same axis of rotation as the bullet 3. Each storage tube 12 is respectively connected with a vertical and hollow needle 15, and the top of the needle 15 is pointed, and its cavity runs through the upper and lower parts of the needle 15. A plurality of rubber plugs 16 are fixed to the bottom of the lower baffle 8, and the rubber plugs 16 correspond to the needle 15 up and down. A lower air delivery channel 17 is provided in the flower axis 4, and the bottom of the lower air delivery channel 17 is provided with a lower air delivery channel 17. The part horizontally penetrates the flower axis 4 to form a No. 1 air inlet 18, a storage hose 19 is fixed to the upper part of the spring tail 5, a colorful and deflated rubber balloon 20 is fixed to the upper part of the hose 19, and is connected to the upper part of the lower air supply channel 17 through an air supply piece, compressed helium is stored between the push plate 9 and the upper baffle 10, and eye-catching liquid pigment is stored between the push plate 9 and the lower baffle 8, and the inner support tube 11 blocks the No. 1 air inlet 18.

[0029] Choose to use it in breeze or windless weather. When in use, connect the airdrop mechanism to the landing gear of the drone, use the drone to transport the airdrop mechanism to the top of the airdrop site, and then use the airdrop mechanism to airdrop the mechanical landmark. When the mechanical landmark falls to contact the ground, the bullet 3 contacts the ground first, and under the influence of inertia, the outer support tube 6 overcomes the elastic repulsion of the main compression spring 13 and continues to move downward, and then resets under the elastic repulsion of the main compression spring 13. In this process, the outer support tube 6 drives the storage tube 12 and the needle 15 to move downward, so that the bullet 3 is used to push the needle 15 upward, and then the needle 15 pierces the rubber plug 16 and is inserted into the outer support tube 6. The needle 15 is squeezed and rubbed by the rubber plug 16 so that the needle 15 maintains this state. At this time, the cavity of the needle 15 is connected to the chamber at the bottom of the outer support tube 6, so that the liquid pigment is discharged from the cavity of the needle 15 and drips on the ground, that is, the liquid pigment is used. The material realizes marking of the land, and with the discharge of liquid pigment and the squeezing of compressed helium, the push plate 9 and the inner support tube 11 gradually move downward, and finally the inner support tube 11 releases the blockage of the No. 1 air inlet 18, so that the compressed helium is filled into the hose 19 and the rubber balloon 20 along the No. 1 air inlet 18, the lower air delivery channel 17 and the air delivery piece, so that the rubber balloon 20 gradually expands and floats upward. During this period, the hose 19 is dragged upward until it tends to be straightened and stops. At this time, the rubber balloon 20 with a striking color and filled can be easily observed, and the rubber balloon 20 can be blown by the breeze and float with the wind, thereby improving the eye-catching effect and being easier to be observed, thereby improving the auxiliary effect on land measurement.

[0030] A plurality of vertical lower support tubes 22 are fixed to the bottom end of the lower baffle 8, each of the lower support tubes 22 corresponds to the rubber plug 16 up and down, and is respectively connected to the storage tube 12 by the same axis. The bottom of the storage tube 12 is in the shape of a step protruding inward, the needle 15 is movably plugged with the lower support tube 22 up and down, and a limit plate 23 is fixed to the middle of the outer wall, and the limit plate 23 is located between the bottom step of the storage tube 12 and the lower support tube 22. The cavity of the needle 15 horizontally penetrates the upper part of the needle 15 to form a liquid inlet hole 24, and its cavity coaxially penetrates the bottom end of the needle 15 to form a liquid discharge hole 25. The liquid discharge hole 25 is always outside the storage tube 12, and the bottom end of the needle 15 is at a certain distance from the top of the bullet 3.

[0031] Furthermore, when the needle 15 is pushed upward by the bullet 3 and pierces the rubber plug 16, the liquid inlet hole 24 is connected to the inner cavity at the bottom of the outer support tube 6, and the liquid discharge hole 25 is connected to the outside. At this time, the liquid pigment can be discharged through the liquid inlet hole 24, the needle 15 cavity and the liquid discharge hole 25, thereby marking the land. The limit plate 23 can be used to control the up and down moving distance of the needle 15 between the lower support tube 22 and the storage tube 12.

[0032] The bottom of the needle 15 is coaxially connected to a driving nozzle 26, and the left and right parts of the driving nozzle 26 are horizontally bent in a centrally symmetrical manner compared to the needle 15. The driving nozzle 26 is located at the top of the bullet 3. The liquid pigment is an easily degradable water-based pigment. The color of the rubber balloon 20 and the liquid pigment is very different from the color of the use environment to achieve a striking effect.

[0033] Furthermore, when the liquid pigment is discharged from the discharge hole 25 along the driving nozzle 26, it is affected by its own pressure and the pressure of the compressed helium, and can apply a good rotational thrust to the driving nozzle 26, thereby causing the driving nozzle 26 to rotate. The rotating driving nozzle 26 can spray the liquid pigment on a larger area under the action of centrifugal force, thereby improving the eye-catching effect and the utilization rate of the liquid pigment, making it easier to be observed from a distance.

[0034] The upper baffle plate 10 is connected to the inner wall of the storage tube 12 in a sealed rotation manner. The lower baffle plate 8 can be sealed and rotated and slid up and down in a sealed manner compared to the inner support tube 11. The upper baffle plate 10 is connected to the flower axis 4 in a sealed and slidable manner up and down. The gas delivery component includes a No. 1 nozzle 27, an upper gas delivery channel 271, a No. 3 air inlet 28, and an auxiliary push plate 29. A horizontally bent No. 1 nozzle 27 is fixed on the upper part of the flower axis 4. The No. 1 nozzle 27 is connected to the lower gas delivery channel 17. An upper gas delivery channel 271 is provided on the upper part of the flower axis 4. The bottom of the upper air supply channel 271 horizontally penetrates the flower axis 4 to form a No. 3 air inlet hole 28. The upper part of the upper air supply channel 271 is fixedly connected to the bottom of the hose 19. The No. 3 air inlet hole 28 and the No. 1 nozzle 27 are located at the bottom of the closed cavity formed by the middle baffle 7, the outer support tube 6 and the upper baffle 10. A plurality of vertical auxiliary push plates 29 are fixed at equal angles on the circumference of the inner circumferential wall of the upper part of the outer support tube 6. The auxiliary push plates 29 are located between the upper baffle 10 and the middle baffle 7, and correspond horizontally to the No. 1 nozzle 27.

[0035] Furthermore, after the compressed helium enters from the No. 1 air inlet 18, it will be discharged from the No. 1 nozzle 27 through the lower air supply channel 17, thereby pushing the auxiliary push plate 29, causing the outer support tube 6 to gradually rotate (when the friction between the outer support tube 6 and the ground and other contact objects is not large), and when the outer support tube 6 rotates, it can drive the lower support tube 22, the storage tube 12 and the needle 15 to move circumferentially, thereby further improving the spraying effect of the driving nozzle 26 to spray the liquid paint in the outer circumferential direction of the outer support tube 6, making the spraying more uniform and covering a larger area, thereby further improving the eye-catching effect and the utilization rate of the liquid paint, making it easier to be observed from a distance.

[0036] The airdrop mechanism includes a support seat 30, a battery 31, a controller 32, a connecting assembly, a stepper motor 34, a main support tube 35, a support plate 36, a storage bin 37, a guide plate 38, a main guide groove 39, a main support platform 40, a secondary support platform 41, a left electric push rod 42, and a secondary guide groove 43. The battery 31 and the controller 32 are fixed on the top of the support seat 30, and a connecting assembly is installed on the top. The controller 32 is electrically connected to the electronic control system of the external drone or electrically connected to the radio transmission module. A vertical brake with a brake is fixed in the middle of the top of the support seat 30. The stepper motor 34 has a function, and a vertical main support cylinder 35 is fixed at the bottom. The rotating shaft of the stepper motor 34 passes through the support seat 30, and a support plate 36 is coaxially fixed at the bottom. The support plate 36 passes through multiple storage bins 37 from top to bottom, and is coaxially rotatably connected with the main support cylinder 35. A mechanical landmark is movably inserted in each storage bin 37. Four vertical guide plates 38 are fixed at equal angles on the outer circumferential wall of the spring tail 5. Four main guide grooves 39 matching the guide plates 38 are passed through each storage bin 37 from top to bottom. The four main guide grooves 39 of each storage bin 37 are respectively One of the main guide grooves 39 horizontally penetrates the support plate 36, and one of the guide plates 38 on the outer periphery of the spring tail 5 horizontally protrudes from the main guide groove 39 horizontally penetrating the support plate 36. A main support platform 40 is fixed to the bottom end of the inner wall of the main support tube 35, and the main support platform 40 can contact with the bottom ends of the guide plates 38 protruding from the main guide grooves 39. The left part of the main support tube 35 is slidably connected to a secondary support platform 41, and the secondary support platform 41 can contact with the bottom ends of the guide plates 38 protruding from the main guide grooves 39 together with the main support platform 40. A horizontal left electric push rod 42 is fixed to the left part of the support cylinder 35, and the right end of the left electric push rod 42 is fixed to the left end of the auxiliary support platform 41. When the left electric push rod 42 is retracted, it can drive the auxiliary support platform 41 to move left and disengage from the contact with the guide plate 38. A secondary guide groove 43 is opened on the left part of the inner wall of the main support platform 40. The secondary guide groove 43 penetrates downward through the main support platform 40 and can correspond to the guide plate 38 and the auxiliary support platform 41 that protrude the main guide groove 39. The battery 31, the controller 32, the stepper motor 34 and the left electric push rod 42 are electrically connected.

[0037] Furthermore, by controlling the left electric push rod 42 to extend the push rod, the auxiliary support platform 41 is matched with the main support platform 40 to jointly support the guide plate 38, and the mechanical landmark cannot be discharged from the storage bin 37. When the mechanical landmark needs to be airdropped, the left electric push rod 42 is controlled to retract the push rod, so that the auxiliary support platform 41 moves left and breaks away from the support for the guide plate 38. At this time, if the main guide groove 39 corresponds to the auxiliary guide groove 43 up and down, the mechanical landmark in the storage bin 37 to which the main guide groove 39 belongs will fall under the action of gravity, thereby realizing airdrop. The stepping motor 34 rotates in steps so that one of the main guide grooves 39 belonging to each storage bin 37 corresponds to the auxiliary guide groove 43, so that they can be airdropped one by one, which facilitates land measurement. When loading mechanical landmarks, the left electric push rod 42 is controlled to retract, and the mechanical landmark is pressed from bottom to top into the storage bin 37. Then the stepping motor 34 is controlled to rotate to load them one by one. When the controller 32 is electrically connected to the radio transmission module, the controller 32 is controlled by radio, and when the controller 32 is electrically connected to the electronic control system of the drone, the controller 32 can be controlled by the drone.

[0038] The connecting assembly includes a light rod 44, a support arm 45, a lower clamping plate 46, an upper clamping plate 47, a screw 48, and a butterfly nut 49. The left and right parts of the support seat 30 are each fixed with a horizontal light rod 44 along the front-to-back direction, and the two light rods 44 are respectively interspaced with support arms 45, and the support arms 45 can slide forward and backward and swing left and right along the light rod 44. The top of the support arm 45 is fixed with a lower clamping plate 46, and an upper clamping plate 47 made of rubber is placed above the lower clamping plate 46. The left and right parts of the upper clamping plate 47 are each fixed with a screw 48 parallel to each other, and the screw 48 is inserted through the lower clamping plate 46 and is threadedly connected with a butterfly nut 49, and the top of the butterfly nut 49 can abut against the bottom of the lower clamping plate 46.

[0039] The connecting assembly is used to connect with the landing gear of the drone of different sizes. Specifically, the upper clamping plate 47 and the lower clamping plate 46 are respectively clamped on the upper and lower sides of the horizontal rod-shaped part of the landing gear, and then the butterfly nut 49 is tightened to clamp the upper clamping plate 47 and the lower clamping plate 46 on the landing gear. The rubber upper clamping plate 47 is easy to deform, so it can adapt to the horizontal rod-shaped part of the landing gear with various cross-sections such as round and square. When the support arm 45, the support seat 30 and the landing gear form a trapezoidal structure, the stability of the support seat 30 is better.

[0040] The tail 5 is provided with a hook mechanism, which includes a rotating arm 52, a receiving groove 51, a rotating arm 52, a roller 53, a telescopic arm 54, a secondary compression spring 55, a hook 56, and a torsion spring. Three receiving grooves 51 are provided at equal angles on the circumference of the tail 5, and a rotating arm 52 is hinged in each of the receiving grooves 51 up and down, respectively. The portion of the rotating arm 52 close to the outer circumferential wall of the tail 5 is rotatably connected to two horizontal rollers 53, and the two rollers 53 rotatably connected to the rotating arm 52 correspond to each other up and down. The portion of the rotating arm 52 close to the axis of the tail 5 is horizontally slidably connected to the telescopic arm 54, and a secondary compression spring 55 is fixed between the telescopic arm 54 and the rotating arm 52. The telescopic arm 54 is hinged on the secondary compression spring 55. The elastic repulsive force of the torsion spring has a tendency to slide away from the telescopic arm 54. The portion of the telescopic arm 54 away from the rotating arm 52 is fixed with an upwardly bent hook 56. The hook 56 is in contact with the side wall of the accommodating groove 51 close to the axis of the spring tail 5. The roller 53 rolls and rubs against the inner wall of the storage bin 37. A torsion spring is installed between the rotating arm 52 and the spring tail 5. The rotating arm 52 always has a tendency to rotate outward and downward under the elastic repulsive force of the torsion spring, so that the hook 56 gradually disengages from the accommodating groove 51. After the hook 56 disengages from the accommodating groove 51, the elastic repulsive force of the torsion spring can make the rotating arm 52 touch the top of the accommodating groove 51, so that the telescopic arm 54 is horizontal and the hook 56 is downward.

[0041] Furthermore, when the mechanical landmark is discharged from the storage bin 37, the roller 53 is separated from the rolling friction with the inner wall of the storage bin 37, and then the rotating arm 52 is flipped upward under the elastic repulsive force of the torsion spring and finally contacts the top of the receiving groove 51. During this process, the hook 56 is separated from the side wall of the receiving groove 51, and then extends out and away from the rotating arm 52 under the elastic repulsive force of the secondary compression spring 55. At this time, the extended hook 56 bends downward and can be well hooked on the tree branches, thereby improving the adaptability in the forest, facilitating observation, and reducing the blocking effect of trees on it.

[0042] The main support cylinder 35 is equipped with a recovery mechanism, which includes a right electric push rod 59, a clamping arm 60, a clamping plate 61, and a needle 62. A horizontal right electric push rod 59 and a clamping arm 60 are fixed to the right end of the main support cylinder 35. A vertical clamping plate 61 is fixed to the right end of the push rod of the right electric push rod 59. The upper part of the clamping plate 61 is recessed to the left, and a plurality of needles 62 extending to the right are fixed to the upper right end. The right end of the bottom of the clamping plate 61 can be fitted with the left end of the right part of the clamping arm 60. The tip of the needle 62 is located on the right side of the bottom right end of the clamping plate 61, and the distance between the tip and the bottom right end of the clamping plate 61 is no more than twice the thickness of the hose 19. The right electric push rod 59 is electrically connected to the controller 32.

[0043] Furthermore, after the mechanical landmark is airdropped, in order to facilitate recovery, the right electric push rod 59 is controlled to retract the push rod, and the land surveying auxiliary device is driven to move by controlling the drone, so that the hose 19 moves between the clamping plate 61 and the clamping arm 60, and then the right electric push rod 59 is controlled to extend the push rod, so that the clamping plate 61 can be used to clamp the hose 19, and at the same time, the needle 62 punctures the hose 19. At this time, under the elastic repulsive force of the rubber balloon 20, helium is discharged through the puncture position, so that it gradually shrinks and droops, and then the drone is controlled to move, so that the hose 19 can be pulled to move the mechanical landmark to achieve recovery.

[0044] A ground plug 63 is detachably installed at the bottom of the bullet 3, and the ground plug 63 includes a ground plug rod 64 and a ground plug plate 65. A vertical ground plug rod 64 is coaxially threadedly connected to the bottom of the bullet 3, and a plurality of ground plug plates 65 with pointed bottoms are fixed at equal angles on the bottom of the ground plug rod 64.

[0045] Furthermore, when the soil at the drop site is relatively loose, the ground plug 63 is installed at the bottom of the warhead 3. At this time, when the mechanical landmark is airdropped, the ground plug 63 can be inserted into the soil to make the mechanical landmark tend to be vertical, thereby reducing the contact area between the outer support tube 6 and the ground or external support, so that the area covered by the liquid paint is larger and the eye-catching effect is improved.

[0046] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A land surveying auxiliary device, comprising an airdrop mechanism, wherein the airdrop mechanism stores a plurality of mechanical landmarks, characterized in that: The mechanical landmark comprises a bullet head (3), a flower axis (4), and a bullet tail (5), all of which are in the shape of a vertical rotating body. The bullet head (3), the flower axis (4), and the bullet tail (5) are coaxially fixed in sequence from bottom to top. A vertical outer support tube (6) is inserted into the coaxial gap of the flower axis (4). A middle baffle plate (7) is coaxially and sealingly rotatably connected to the middle and upper part of the inner wall of the outer support tube (6), and a horizontal lower baffle plate (8) is fixed to the bottom end. A push plate (9) is sealably inserted into the inner part of the outer support tube (6), and an upper baffle plate (10) is installed on the top. A vertical inner support tube (11) is fixed at the bottom end of the plate (9), and can be sealed coaxially rotated and sealed up and down sliding compared to the outer support tube (6); the top end of the upper baffle plate (10) contacts the bottom end of the spring tail (5); the inner support tube (11) is sealed and slidably connected with the flower axis (4) and the lower baffle plate (8); a plurality of vertical storage tubes (12) are installed below the lower baffle plate (8), and a vertical main compression spring (13) is fixed at the bottom end; a support ring (14) is fixed at the bottom end of the main compression spring (13); The support ring (14) is coaxially rotatably connected with the bullet (3); each storage cylinder (12) is movably connected with a vertical and hollow needle (15) in the upper and lower parts; the top of the needle (15) is pointed, and its cavity passes through the upper and lower parts of the needle (15); a plurality of rubber plugs (16) are fixed through the bottom of the lower baffle (8); the rubber plugs (16) correspond to the needle (15) in the upper and lower parts; a lower air delivery channel (17) is provided in the flower axis (4); the bottom of the lower air delivery channel (17) passes through the flower axis ( 4) a first air inlet (18) is formed, a storage hose (19) is fixed to the upper part of the tail (5), a colorful and deflated rubber balloon (20) is fixed to the upper part of the hose (19), and the hose (19) is connected to the upper part of the lower air supply channel (17) through the air supply member, compressed helium is stored between the push plate (9) and the upper baffle (10), and eye-catching liquid pigment is stored between the push plate (9) and the lower baffle (8), and the inner support tube (11) blocks the first air inlet (18).

2. A land surveying auxiliary device according to claim 1, characterized in that: A plurality of vertical lower support tubes (22) are fixed to the bottom end of the lower baffle plate (8), each of the lower support tubes (22) corresponds to the rubber stopper (16) above and below, and is respectively connected to the storage tube (12) by coaxial threads. The bottom of the storage tube (12) is in the shape of a step protruding inwards. The needle (15) and the lower support tube (22) are movably plugged in above and below, and a limit plate (23) is fixed in the middle of the outer wall. The limit plate (23) is located between the step at the bottom of the storage tube (12) and the lower support tube (22). The cavity of the needle (15) horizontally penetrates the upper part of the needle (15) to form a liquid inlet hole (24), and its cavity coaxially penetrates the bottom end of the needle (15) to form a liquid discharge hole (25). The liquid discharge hole (25) is always outside the storage tube (12), and the bottom end of the needle (15) is at a certain distance from the top end of the bullet (3).

3. A land surveying auxiliary device according to claim 2, characterized in that: The bottom of the needle (15) is coaxially rotatably connected to a driving nozzle (26); the left and right parts of the driving nozzle (26) are in a horizontally bent shape that is centrally symmetrical with respect to the needle (15); the driving nozzle (26) is located at the top of the bullet (3); and the liquid pigment is an easily degradable water-based pigment.

4. A land surveying auxiliary device according to any one of claims 1 to 3, characterized in that: The upper baffle plate (10) is connected to the inner wall of the storage tube (12) in a sealed and rotatable manner. The lower baffle plate (8) can be sealed and rotated and can slide up and down in a sealed manner compared to the inner support tube (11). The upper baffle plate (10) is connected to the flower shaft (4) in a sealed and slidable manner up and down. The gas delivery component comprises a No. 1 nozzle (27), an upper gas delivery channel (271), a No. 3 air inlet hole (28), and an auxiliary push plate (29). A horizontally bent No. 1 nozzle (27) is fixed to the upper part of the flower shaft (4). The No. 1 nozzle (27) is connected to the lower gas delivery channel (17). The upper part of the flower shaft (4) is provided with an upper gas delivery channel (271). The bottom of the upper air delivery channel (271) horizontally penetrates the flower axis (4) to form a No. 3 air inlet hole (28). The upper part of the upper air delivery channel (271) is fixedly connected to the bottom of the hose (19). The No. 3 air inlet hole (28) and the No. 1 nozzle (27) are located at the bottom of a closed cavity formed by the middle baffle (7), the outer support tube (6) and the upper baffle (10). A plurality of vertical auxiliary push plates (29) are fixed at equal angles on the circumference of the inner circumferential wall of the upper part of the outer support tube (6). The auxiliary push plates (29) are located between the upper baffle (10) and the middle baffle (7) and correspond horizontally to the No. 1 nozzle (27).

5. A land surveying auxiliary device according to claim 4, characterized in that: The airdrop mechanism comprises a support base (30), a battery (31), a controller (32), a connecting assembly, a stepping motor (34), a main support tube (35), a support plate (36), a storage bin (37), a guide plate (38), a main guide groove (39), a main support platform (40), a secondary support platform (41), a left electric push rod (42), and a secondary guide groove (43). The top of the support base (30) is fixed with a battery (31) and a controller (32), and the top is equipped with a connecting assembly. The controller (32) is electrically connected to an electric control system of an external drone or is electrically connected to a radio transmission module. A vertical brake having a brake is fixed in the middle of the top of the support base (30). A stepper motor (34) with a car function is provided, and a vertical main support cylinder (35) is fixed at the bottom end. The rotating shaft of the stepper motor (34) passes through the support seat (30), and a support plate (36) is coaxially fixed at the bottom end. The support plate (36) passes through a plurality of storage bins (37) from top to bottom, and is coaxially rotatably connected with the main support cylinder (35). A mechanical landmark is movably inserted in each of the storage bins (37) from top to bottom. Four vertical guide plates (38) are fixed at equal angles on the outer circumferential wall of the spring tail (5). Four main guide grooves (39) matching the guide plates (38) are passed through each of the storage bins (37) from top to bottom. The four main guide grooves (39) in each of the storage bins (37) are One of the main guide grooves (39) horizontally penetrates the support plate (36); one of the guide plates (38) on the outer periphery of the spring tail (5) horizontally protrudes from the main guide groove (39) that horizontally penetrates the support plate (36); a main support platform (40) is fixed to the bottom end of the inner wall of the main support tube (35); the main support platform (40) can contact with the bottom end of each guide plate (38) protruding from the main guide groove (39); the left part of the main support tube (35) is slidably connected to a secondary support platform (41); the secondary support platform (41) can contact with the bottom end of each guide plate (38) protruding from the main guide groove (39) together with the main support platform (40); the main support A horizontal left electric push rod (42) is fixed to the left portion of the support cylinder (35), the right end of the push rod of the left electric push rod (42) is fixed to the left end of the auxiliary support platform (41), and when the left electric push rod (42) is retracted, it can drive the auxiliary support platform (41) to move leftward and break away from the contact with the guide plate (38). A secondary guide groove (43) is opened on the left portion of the inner wall of the main support platform (40), and the secondary guide groove (43) penetrates downward through the main support platform (40) and can correspond to the guide plate (38) and the auxiliary support platform (41) protruding out of the main guide groove (39) in a vertical manner. The battery (31), the controller (32), the stepping motor (34) and the left electric push rod (42) are electrically connected.

6. A land surveying auxiliary device according to claim 5, characterized in that: The connecting assembly comprises a light rod (44), a support arm (45), a lower clamping plate (46), an upper clamping plate (47), a screw (48), and a butterfly nut (49). The left and right parts of the support seat (30) are each fixed with a horizontal light rod (44) along the front-back direction. The two light rods (44) are respectively interspaced with a support arm (45). The support arm (45) can slide forward and backward and swing left and right along the light rod (44). The top of the support arm (45) is fixed with a lower clamping plate (46). An upper clamping plate (47) made of rubber material is placed above the lower clamping plate (46). The left and right parts of the upper clamping plate (47) are each fixed with a screw (48) parallel to each other. The screw (48) is inserted through the lower clamping plate (46) and is threadedly connected with a butterfly nut (49). The top of the butterfly nut (49) can abut against the bottom of the lower clamping plate (46).

7. A land surveying auxiliary device according to claim 5 or 6, characterized in that: The tail (5) is provided with a hook mechanism, which comprises a rotating arm (52), a receiving groove (51), a rotating arm (52), a roller (53), a telescopic arm (54), a secondary compression spring (55), a hook (56), and a torsion spring. The tail (5) is provided with three receiving grooves (51) at equal angles on its circumference. A rotating arm (52) is hingedly connected up and down in each of the receiving grooves (51). A portion of the rotating arm (52) close to the outer circumferential wall of the tail (5) is rotatably connected to two horizontal rollers (53). The two rollers (53) rotatably connected to the rotating arm (52) correspond to each other up and down. A portion of the rotating arm (52) close to the axis of the tail (5) is horizontally slidably connected to the telescopic arm (54). A secondary compression spring (55) is fixed between the telescopic arm (54) and the rotating arm (52). The telescopic arm (54) is hingedly connected to the secondary compression spring. The spring (55) has a tendency to slide away from the telescopic arm (54) under the elastic repulsive force of the spring (55); a hook (56) bent upward is fixed to a portion of the telescopic arm (54) away from the rotating arm (52); the hook (56) is in contact with a side wall of the receiving groove (51) close to the axis of the spring tail (5); the roller (53) rolls and rubs against the inner wall of the storage bin (37); a torsion spring is installed between the rotating arm (52) and the spring tail (5); the rotating arm (52) always has a tendency to rotate outward and downward under the elastic repulsive force of the torsion spring, so that the hook (56) gradually separates from the receiving groove (51); after the hook (56) separates from the receiving groove (51), the rotating arm (52) can contact the top of the receiving groove (51) under the elastic repulsive force of the torsion spring, so that the telescopic arm (54) is horizontal and the hook (56) is downward.

8. A land surveying auxiliary device according to claim 7, characterized in that: The main support tube (35) is equipped with a recovery mechanism, which includes a right electric push rod (59), a clamping arm (60), a clamping plate (61), and a needle (62). A horizontal right electric push rod (59) and a clamping arm (60) are fixed to the right end of the main support tube (35). A vertical clamping plate (61) is fixed to the right end of the push rod of the right electric push rod (59). The upper part of the clamping plate (61) is concave to the left, and a plurality of needles (62) extending to the right are fixed to the upper right end. The right end of the bottom of the clamping plate (61) can be fitted with the left end of the right part of the clamping arm (60). The tip of the needle (62) is located on the right side of the right end of the bottom of the clamping plate (61), and the distance between the tip and the right end of the bottom of the clamping plate (61) is not more than twice the thickness of the hose (19). The right electric push rod (59) is electrically connected to the controller (32).

9. A land surveying auxiliary device according to any one of claims 1, 2, 3, 5, 6 and 8, characterized in that: A ground plug (63) is detachably mounted on the bottom of the bullet (3), the ground plug (63) comprising a ground plug rod (64) and a ground plug plate (65), a vertical ground plug rod (64) is coaxially threadedly connected to the bottom of the bullet (3), and a plurality of ground plug plates (65) with pointed bottom portions are fixed at equal angles on the bottom of the ground plug rod (64).

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