A granary gas collection device for drone mounting

Abstract

The invention discloses a granary gas collection device for drone mounting, including a top plate, four supporting legs, a gas sampling mechanism, a suspension retracting mechanism and a fuselage binding mechanism; the gas sampling mechanism is suspended on the suspension retracting mechanism by a suspension rope; the suspension retracting mechanism is arranged at the center of the lower side of the top plate, and is used to release and recover the gas sampling mechanism; the fuselage binding mechanism is arranged on the upper side of the top plate, and is used to install the top plate on the fuselage of the drone. The granary gas collection device utilizes the suspension retracting mechanism to realize the release and recovery control of the gas sampling mechanism, thereby cooperating with the gas sampling mechanism to realize remote gas collection, without the need for personnel to enter the barn for detection, effectively ensuring personnel safety; the fuselage binding mechanism can meet the adaptability of the collection device to various types of drones, and has good universality.

Description

Technical Field

[0001] The invention relates to a gas collection device, in particular to a granary gas collection device for mounting on an unmanned aerial vehicle. Background Art

[0002] At present, the existing granary gas collection is all done manually on-site. However, in the closed environment of the granary, there are often gases that are harmful to human health, and people are prone to poisoning when entering for inspection. Therefore, it is necessary to design a granary gas collection device for drone mounting, so that it can be installed on the drone to realize remote unmanned gas collection and avoid danger to personnel. Summary of the invention

[0003] Purpose of the invention: To provide a granary gas collection device for drone mounting, which can be installed on the drone to realize remote unmanned gas collection and avoid danger to personnel.

[0004] Technical solution: The granary gas collection device for drone mounting created by the present invention includes a top plate, four supporting legs, a gas sampling mechanism, a suspension and retracting mechanism, and a fuselage binding mechanism;

[0005] Four supporting legs are vertically installed at the four top corners of the lower side of the top plate; the gas sampling mechanism is suspended on the suspension retractable mechanism through a suspension rope, and the gas sampling mechanism is provided with a detection insert tube for inserting into the grain; the suspension retractable mechanism is arranged at the center of the lower side of the top plate, and is used for releasing and recovering the gas sampling mechanism; the fuselage binding mechanism is arranged on the upper side of the top plate, and is used for installing the top plate on the fuselage of the UAV.

[0006] Furthermore, the suspension retracting and releasing mechanism includes a driving motor, a driving belt, an electromagnet, a winding roller, a driving circular shaft and a rebound compression spring;

[0007] A line roller support, a pulley support and a side plate are provided on the lower side of the top plate; the winding roller is rotatably mounted on the line roller support through the line roller shaft; a pulley shaft is rotatably mounted on the pulley support; a driving pulley is fixedly mounted on the pulley shaft; a square driving hole and a circular shaft hole are sequentially arranged on the line roller shaft along the central axis, and the side length of the square driving hole is greater than the aperture of the circular shaft hole; the driving circular shaft sequentially penetrates the square driving hole and the circular shaft hole on the line roller shaft, and can rotate freely in the circular shaft hole; a synchronous square shaft is extended at one end of the driving circular shaft, and a square shaft head is arranged at the other end of the driving circular shaft; a square synchronous hole is arranged on the pulley shaft along the central axis, and the synchronous square shaft is penetrated and It is installed on the square synchronous hole so that the synchronous square shaft rotates synchronously with the pulley shaft; a limit disc is provided on the side of the square shaft head, and the diameter of the limit disc is greater than the side length of the square driving hole; a short shaft is rotatably installed on the through end of the synchronous square shaft, and a magnetic suction disc is provided on the short shaft; the electromagnet is installed on the side plate, and an iron disc opposite to the magnetic suction disc is provided at the iron core end of the electromagnet; the rebound compression spring is sleeved on the driving circular shaft, and the two ends of the rebound compression spring are elastically supported on the limit disc and the wire roller support; the driving motor drives the driving pulley to rotate through the driving belt; the suspension rope is wound on the winding roller; when the iron disc and the magnetic suction disc are attracted, the driving circular shaft moves axially to make the square shaft head embedded in the square driving hole.

[0008] Furthermore, a protective plate is provided on the wire roller support and below the winding roller; a threading hole is provided on the protective plate; and a suspension rope passes through the threading hole.

[0009] Furthermore, a guide slope is provided at the connection between the square shaft head and the driving circular shaft to facilitate the square shaft head to be quickly embedded in the square driving hole; circular baffles are provided at both ends of the winding roller to prevent the suspension rope from being wound into the gap between the winding roller and the roller support.

[0010] Furthermore, an infrared position sensor for detecting the rising position of the gas sampling mechanism is provided on the supporting leg; an electrical connection socket is provided on the upper side of the top plate; the electrical connection wires of the infrared position sensor, the electrical connection wires of the drive motor and the electrical connection wires of the electromagnet are electrically connected to the electrical connection socket.

[0011] Further, the gas sampling mechanism includes a cylindrical collection box, a disc-shaped piston, two insertion rods and a support plate;

[0012] A suspension ear is provided at the top center of the cylindrical collecting box, and the end of the suspension rope is fixed on the suspension ear; a cylindrical cavity is vertically provided inside the cylindrical collecting box, and a disc-shaped piston is installed in the cylindrical cavity; a sealing ring is provided on the circumferential side of the disc-shaped piston, and the sealing ring is tightly attached to the inner wall of the cylindrical cavity; an exhaust pipe connected to the cylindrical cavity is provided at the top of the cylindrical collecting box, and a closing cap is threadedly installed on the pipe mouth of the exhaust pipe; an exhaust hole connected to the cylindrical cavity is provided at the bottom of the cylindrical collecting box; two side plug holes are vertically provided on the bottom edge of the cylindrical collecting box, extending into the side wall of the cylindrical collecting box, and the two side plug holes are located at the two end positions of the same diameter of the bottom circumference; two plug rods are respectively inserted in the two side plug holes, and A side hole is provided on the opposite sides of the upper ends of the two insertion rods; a locking spring is installed in the side hole, and a locking protrusion is installed at the opening of the side hole; two limiting holes are provided on the upper cavity wall of the cylindrical cavity, which are respectively connected to the side insertion holes; a triangular convex tip is provided on each of the two locking protrusions, and the triangular convex tip extends into the cylindrical cavity from the limiting hole, which is used for elastically clamping and limiting the edge of the disc-shaped piston; the lower ends of the two insertion rods are installed on the support plate; a central circular hole is provided at the midline of the support plate; the upper end of the detection insertion tube vertically penetrates the central circular hole of the support plate and is then installed at the bottom center of the cylindrical collection box; an air guide tube is connected to the upper end tube wall of the detection insertion tube, and the upper end of the air guide tube is installed on the top of the cylindrical collection box and is connected to the cylindrical cavity.

[0013] Furthermore, a bottom center hole is provided at the bottom center of the cylindrical collecting box, and the upper end of the detection tube is connected to the bottom center hole; a closed tube is inserted in the bottom center hole, and a guide strip hole is vertically provided on the tube wall of the closed tube; a guide boss embedded in the guide strip hole is provided on the hole wall of the bottom center hole; the upper end of the closed tube protrudes out of the bottom center hole, and a supporting compression spring is sleeved on the protruding end; a pressing plate is provided on the upper end of the closed tube, and the upper and lower ends of the supporting compression spring are supported between the pressing plate and the lower side wall of the cylindrical cavity; after the disc-shaped piston moves down to press the pressing plate, the closed tube is inserted into the detection tube, and the lower air inlet of the air guide tube is closed by the tube wall of the closed tube.

[0014] Furthermore, the lower end of the detection tube is closed by a conical tip; a detection air inlet is provided on the lower end tube wall of the detection tube; a reinforcing rib rod obliquely supported to the detection tube is provided at the bottom of the cylindrical collection box; and an inclined enclosure inclined toward the center is provided on the top edge of the cylindrical collection box.

[0015] Further, the fuselage binding mechanism includes two side clamping plates, two top pressure plates, a steel wire rope and a locking bolt;

[0016] The lower sides of the two side clamping plates are hingedly installed on the left and right sides of the top plate; the two top pressure plates are hingedly installed together, and steel rope holes are provided on the two top pressure plates; a steel rope locking hole is provided on the side edge of the right side clamping plate extending downward, and the lower hole of the steel rope locking hole passes through the right side surface of the side clamping plate; the locking bolt is threadedly screwed on the right side surface of the side clamping plate on the right, and the end of the locking bolt extends into the steel rope locking hole, and a steel rope clamping plate is rotatably arranged on the extended end; one end of the steel wire rope is fixedly installed on the middle part of the upper side of the left side clamping plate; the other end of the steel wire rope passes through the steel rope holes and the steel rope locking holes on the two top pressure plates in turn and then extends out; the steel rope clamping plate is pressed on the steel wire rope to achieve fixation.

[0017] Furthermore, elastic rubber pads are provided on the inner side surfaces of the two side clamping plates, on the lower side surfaces of the two top pressing plates, and on the upper side surface of the top plate.

[0018] Compared with the prior art, the invention has the following beneficial effects: four supporting legs can be used to realize the mounting installation of the lower suspension and retracting mechanism and the gas sampling mechanism, so that the detection tube will not touch the ground when the UAV lands, and the gas sampling mechanism can be relatively fixed by the fixed ring to prevent large shaking during transportation; the suspension and retracting mechanism can be used to realize the release and recovery control of the gas sampling mechanism, so as to cooperate with the gas sampling mechanism to realize remote collection of gas, without the need for personnel to enter the barn for inspection, effectively ensuring the safety of personnel; the fixed ring can be used to limit the gas sampling mechanism after it returns to its position to prevent excessive shaking during flight; the fuselage binding mechanism can meet the adaptability of the collection device to various types of UAVs, and has good universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of the present invention;

[0020] Figure 2 The figure is a schematic diagram of the structure of the suspension retractable mechanism created by the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0022] Embodiment 1:

[0023] like Figure 1 and 2 As shown, the granary gas collection device for drone mounting disclosed in the invention comprises: a top plate 1, four supporting legs 2, a gas sampling mechanism, a suspension and retracting mechanism, and a fuselage binding mechanism;

[0024] Four supporting legs 2 are vertically installed at the four top corners of the lower side of the top plate 1, and rubber feet 4 are sleeved on the lower ends of the four supporting legs 2; the four supporting legs 2 are fixedly installed on the same fixed ring 3; a triangular rib plate 5 is provided at the installation position of the supporting legs 2 and the lower side of the top plate 1; the gas sampling mechanism is suspended on the suspension retractable mechanism through a suspension rope 9, and the gas sampling mechanism is provided with a detection insert 41 for inserting into the grain; the suspension retractable mechanism is arranged at the center of the lower side of the top plate, for releasing and recovering the gas sampling mechanism; the fuselage binding mechanism is arranged on the upper side of the top plate 1, for installing the top plate 1 on the fuselage of the drone.

[0025] The four supporting legs 2 can be used to realize the mounting installation of the lower side suspension and retracting mechanism and the gas sampling mechanism, so that the detection tube 41 will not touch the ground when the UAV lands. At the same time, the gas sampling mechanism can be relatively fixed by the fixed ring 3 to prevent large shaking during transportation; the suspension and retracting mechanism can realize the release and recovery control of the gas sampling mechanism, so as to cooperate with the gas sampling mechanism to realize remote collection of gas, without the need for personnel to enter the barn for inspection, effectively ensuring the safety of personnel; the fixed ring 3 can be used to limit the gas sampling mechanism after it returns to its position to prevent excessive shaking during flight; the fuselage binding mechanism can meet the adaptability of the collection device to various types of UAVs and has good universality.

[0026] Furthermore, the suspension retracting and releasing mechanism includes a driving motor 6, a driving belt 25, an electromagnet 27, a winding roller 8, a driving circular shaft 14 and a rebound compression spring 18;

[0027] A line roller support 7, a pulley support 19 and a side plate 26 are provided on the lower side of the top plate 1; the winding roller 8 is rotatably mounted on the line roller support 7 through the line roller shaft 12; a pulley shaft 20 is rotatably mounted on the pulley support 19; a driving pulley 21 is fixedly mounted on the pulley shaft 20; a square driving hole and a circular shaft hole are sequentially arranged along the central axis on the line roller shaft 12, and the side length of the square driving hole is greater than the aperture of the circular shaft hole; the driving circular shaft 14 sequentially penetrates the square driving hole and the circular shaft hole on the line roller shaft 12, and can rotate freely in the circular shaft hole; a synchronous square shaft 22 is extended at one end of the driving circular shaft 14, and a square shaft head 15 is arranged at the other end of the driving circular shaft 14; a square synchronous hole is arranged on the pulley shaft 20 along the central axis, and the synchronous square shaft 22 is penetrated and installed on the square synchronous hole , so that the synchronous square shaft 22 rotates synchronously with the pulley shaft 20; a limiting disc 16 is provided on the side of the square shaft head 15, and the diameter of the limiting disc 16 is greater than the side length of the square driving hole; a short shaft 23 is rotatably installed on the through end of the synchronous square shaft 22, and a magnetic suction disc 24 is provided on the short shaft 23; the electromagnet 27 is installed on the side plate 26, and an iron disc 28 opposite to the magnetic suction disc 24 is provided at the iron core end of the electromagnet 27; the rebound compression spring 18 is sleeved on the driving circular shaft 14, and the two ends of the rebound compression spring 18 are elastically supported on the limiting disc 16 and the wire roller support 7; the driving motor 6 drives the driving pulley 21 to rotate through the driving belt 25; the suspension rope 9 is wound on the winding roller 8; when the iron disc 28 is attracted to the magnetic suction disc 24, the driving circular shaft 14 moves axially to make the square shaft head 15 embedded in the square driving hole.

[0028] By energizing the electromagnet 27, the magnetic disk 24 and the iron disk 28 are attracted to each other, thereby overcoming the elastic force of the rebound compression spring 18, so that the square shaft head 15 is embedded in the square synchronization hole, so that the driving motor 6 can smoothly drive the winding roller 8 to rotate; by utilizing the cooperation between the synchronous square shaft 22 and the square synchronization hole, the transmission of the driving pulley 21 is not affected when the driving circular shaft 14 moves axially; by utilizing the rebound compression spring 18, the square shaft head 15 can be quickly disengaged from the square synchronization hole after the electromagnet 27 is powered off, so that the wire roller shaft 12 can rotate relative to the driving circular shaft 14; by utilizing the rotatable installation of the short shaft 23, when the magnetic disk 24 and the iron disk 28 are attracted to each other, the driving circular shaft 14 can also be driven to rotate normally.

[0029] Furthermore, a protective plate 10 is provided on the wire roller support 7 and below the winding roller 8; a threading hole 11 is provided on the protective plate 10; and the suspension rope 9 passes through the threading hole 11. The threading hole 11 on the protective plate 10 can make the inlet and outlet positions of the suspension rope 9 relatively fixed, thereby avoiding large shaking during the winding and unwinding process.

[0030] Furthermore, a guide slope 17 is provided at the connection between the square shaft head 15 and the driving circular shaft 14 to facilitate the quick insertion of the square shaft head 15 into the square driving hole; and circular baffles 13 are provided at both ends of the winding roller 8 to prevent the suspension rope 9 from being wound into the gap between the winding roller 8 and the wire roller support 7. The guide slope 17 can facilitate the smooth and quick insertion of the square shaft head 15 into the square driving hole; and the circular baffles 13 can prevent the suspension rope 9 from being wound into the gap between the winding roller 8 and the wire roller support 7.

[0031] Furthermore, an infrared position sensor 40 for detecting the rising position of the gas sampling mechanism is provided on the supporting leg 2; an electrical connection socket 51 is provided on the upper side of the top plate 1; the electrical connection wires of the infrared position sensor 40, the electrical connection wires of the drive motor 6, and the electrical connection wires of the electromagnet 27 are electrically connected to the electrical connection socket 51. The electrical connection socket 51 can be used to realize the electrical connection between the collection device and the drone; the infrared position sensor 40 can be used to detect in real time whether the gas sampling mechanism is recovered in place.

[0032] Further, the gas sampling mechanism includes a cylindrical collection box 29, a disc-shaped piston 30, two insertion rods 35 and a support plate 59;

[0033] A suspension ear 33 is provided at the top center of the cylindrical collecting box 29, and the end of the suspension rope 9 is fixed on the suspension ear 33; a cylindrical cavity is vertically provided inside the cylindrical collecting box 29, and a disc-shaped piston 30 is installed in the cylindrical cavity; a sealing ring 31 is provided on the circumferential side of the disc-shaped piston 30, and the sealing ring 31 is close to the inner wall of the cylindrical cavity; an exhaust pipe connected to the cylindrical cavity is provided at the top of the cylindrical collecting box 29, and a closing cap 32 is threadedly installed on the pipe mouth of the exhaust pipe; an exhaust hole 60 connected to the cylindrical cavity is provided at the bottom of the cylindrical collecting box 29; two side plug holes 61 are vertically provided on the bottom edge of the cylindrical collecting box 29, extending into the side wall of the cylindrical collecting box 29, and the two side plug holes 61 are located at the two end positions of the same diameter of the bottom circumference; two plug rods 35 are respectively inserted in the two side plug holes 61, and A side hole 36 is provided on each of the opposite sides of the upper end portion; a lock spring 39 is installed in the side hole 36, and a lock projection 37 is installed at the opening of the side hole 36; two limit holes are provided on the upper wall of the cylindrical cavity, which are respectively connected to the side plug holes 61; a triangular convex tip 38 is provided on each of the two lock projections 37, and the tip of the triangular convex tip 38 extends into the cylindrical cavity from the limit hole, which is used to elastically clamp and limit the edge of the disc-shaped piston 30; the lower ends of the two insertion rods 35 are both installed on the support plate 59; a central circular hole is provided at the midline of the support plate 59; the upper end of the detection insert 41 vertically penetrates the central circular hole of the support plate 59 and is then installed at the bottom center of the cylindrical collection box 29; an air guide tube 42 is provided on the upper end wall of the detection insert 41, and the upper end of the air guide tube 42 is installed on the top of the cylindrical collection box 29 and is connected to the cylindrical cavity. By means of the cooperation of the support plate 59, the insertion rod 35, the locking spring 39 and the locking protrusion 37, the elastic limiting installation of the disc-shaped piston 30 can be achieved. However, when the support plate 59 is impacted, the insertion rod 35 moves upward relatively, and the triangular protrusion 38 retracts into the side hole 36 together with the locking protrusion 37 under the squeezing of the limiting hole, thereby releasing the limiting of the disc-shaped piston 30, so that the disc-shaped piston 30 can move downward under the action of gravity, forming a negative pressure in the cylindrical cavity to suck the gas into the cylindrical collecting box 29; the circumferential edge sealing of the disc-shaped piston 30 can be achieved by means of the sealing ring 31.

[0034] Furthermore, a bottom center hole is provided at the bottom center of the cylindrical collecting box 29, and the upper end of the detection tube 41 is connected to the bottom center hole; a closed tube 43 is inserted in the bottom center hole, and a guide strip hole 45 is vertically provided on the tube wall of the closed tube 43; a guide boss 44 embedded in the guide strip hole 45 is provided on the hole wall of the bottom center hole; the upper end of the closed tube 43 extends out of the bottom center hole, and a supporting compression spring 47 is sleeved on the extended end; a pressing plate 46 is provided on the upper end of the closed tube 43, and the upper and lower ends of the supporting compression spring 47 are supported between the pressing plate 46 and the lower side wall of the cylindrical cavity; after the disc-shaped piston 30 moves down to press the pressing plate 46, the closed tube 43 is inserted into the detection tube 41, and the lower end air inlet of the air guide tube 42 is closed by the tube wall of the closed tube 43. By means of the coordinated installation of the pressing plate 46, the closing insert 43 and the supporting compression spring 47, when the disc-shaped piston 30 moves down to the bottom, the closing insert 43 can be pressed so as to be inserted into the detection insert 41 to close the lower air inlet of the air guide tube 42, thereby avoiding gas leakage during transportation; and when the disc-shaped piston 30 has not fallen, under the action of the supporting compression spring 47, the closing insert 43 will not move down, thereby ensuring that the collection air intake pipeline is unobstructed.

[0035] Furthermore, the lower end of the detection tube 41 is closed by a conical tip 49; a detection air inlet 50 is provided on the lower end tube wall of the detection tube 41; a reinforcing rib rod 48 obliquely supported to the detection tube 41 is provided at the bottom of the cylindrical collecting box 29; and an inclined enclosure 34 inclined toward the center is provided on the top edge of the cylindrical collecting box 29.

[0036] The conical tip 49 can facilitate the detection tube 41 to be inserted into the grain pile, so as to collect the gas inside; the reinforcing rib rod 48 can enhance the structural strength of the detection tube 41; the inclined enclosure 34 can enable the cylindrical collection box 29 to quickly and smoothly enter the fixed ring 3.

[0037] Furthermore, the fuselage binding mechanism includes two side clamping plates 55, two top pressure plates 53, a steel wire rope 52 and a locking bolt 57;

[0038] The lower sides of the two side clamping plates 55 are hingedly mounted on the left and right sides of the top plate 1; the two top pressure plates 53 are hingedly mounted together, and steel rope holes are provided on the two top pressure plates 53; a steel rope locking hole 56 is extended downwardly from the upper side of the right side clamping plate 55, and the lower hole of the steel rope locking hole 56 passes through the right side surface of the side clamping plate 55; a locking bolt 57 is threadedly screwed on the right side surface of the right side clamping plate 55, and the end of the locking bolt 57 extends into the steel rope locking hole 56, and a steel rope clamping plate 58 is rotatably arranged on the extended end; one end of the wire rope 52 is fixedly mounted on the middle part of the upper side of the left side clamping plate 55; the other end of the wire rope 52 passes through the steel rope holes and the steel rope locking hole 56 on the two top pressure plates 53 in turn and then extends out; the steel rope clamping plate 58 is pressed on the steel wire rope 52 to achieve fixation.

[0039] Two side clamping plates 55, two top pressure plates 53 and a steel wire rope 52 are used to realize the wrapping installation of the drone fuselage, so that the collection device can be stably installed on the drone; the end of the steel wire rope 57 can be fixedly locked by using the locking bolt 57 and the steel rope clamping plate 58.

[0040] Furthermore, elastic rubber pads 54 are provided on the inner side surfaces of the two side clamping plates 55, the lower side surfaces of the two top pressure plates 53, and the upper side surface of the top plate 1. The elastic rubber pads 54 can achieve stability in installing the fuselage binding mechanism on the fuselage of the drone.

[0041] When the granary gas collection device for drone mounting disclosed in the invention is used, firstly, the drone fuselage is wrapped and installed by two side clamping plates 55, two top pressure plates 53, the top plate 1 and a steel wire rope 52, so that the collection device can be stably installed with the drone; when the drone flies over the grain pile, the controller on the drone controls the drive motor 6 and the electromagnet 27, so that the coil of the electromagnet 27 is powered off, the drive motor 6 stops working, and the drive circular shaft 14 moves axially under the action of the rebound compression spring 18, and the square shaft head 15 is separated from the square shaped driving hole, so that the gas sampling mechanism falls freely under the action of gravity; when reaching the grain pile, the detection insert 41 is inserted into the grain pile, and when the support plate 59 touches the surface of the grain pile, the two insertion rods 35 move up along the two side insertion holes 61, thereby forcing the locking protrusion 37 to retract into the side hole 36 under the reaction force of the triangular protrusion 38, and at the same time, the tip of the triangular protrusion 38 no longer extends into the cylindrical cavity, and the disc-shaped piston 30 is no longer limited by the two triangular protrusions 38, and continues to move downward under the action of inertia and gravity, thereby forming a negative pressure in the upper part of the cylindrical cavity, and the gas in the grain pile moves along The detection cannula 41 and the air guide tube 42 enter the cylindrical cavity to collect the gas inside the grain pile; when the disc-shaped piston 30 descends to the bottom of the cylindrical cavity, the closed cannula 43 is pressed downward under the action of gravity, thereby closing the lower air inlet of the air guide tube 42 to prevent gas leakage during transportation after collection; after the gas is sucked in and collected, the controller on the drone controls the drive motor 6 and the electromagnet 27, so that the coil of the electromagnet 27 is energized, and the drive shaft 14 moves axially under the action of magnetic adsorption, overcoming the elastic force of the rebound compression spring 18, and the square shaft head 15 is embedded in the square driving hole, the driving motor 6 starts to work, drives the winding roller 8 to rotate, so that the suspension rope 9 is wound around the winding roller 8, thereby retracting the gas sampling mechanism into the fixed ring 3; the drone then transports the collection device out of the barn, and the collection personnel first seal the lower end of the detection cannula 41 to prevent air from entering from the detection air inlet 50, then open the closed cap 32, connect it to the outside through the exhaust pipe, and then invert the gas sampling mechanism, the disc-shaped piston 30 descends under the action of gravity, and squeezes out the collected gas inside, so that it is convenient for the collection personnel to detect the collected gas;The drone is equipped with a controller for realizing the control of the acquisition device. The controller adopts a control module composed of a single-chip microcomputer, a wireless communication module, a relay and a motor drive circuit. The wireless communication module is used to communicate with the remote controller. The relay is used to realize the power-on and power-off control of the electromagnet 27. The motor drive circuit is used to realize the start and stop control of the drive motor 6 according to the control command of the single-chip microcomputer. At the same time, the single-chip microcomputer can also receive the position detection signal of the infrared position sensor 40, so as to judge whether the acquisition device has been retracted, so as to immediately control the drive motor 6 to stop. The single-chip microcomputer communicates wirelessly with the remote controller through the wireless communication module. The remote controller is provided with a release button and a recovery button for sending release and recovery control commands. ;

[0042] As mentioned above, although the invention has been shown and described with reference to a specific preferred embodiment, it should not be interpreted as limiting the invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the invention defined in the appended claims.

Claims

1. A granary gas collection device for drone mounting, characterized in that: It comprises a top plate (1), four supporting legs (2), a gas sampling mechanism, a suspension and retracting mechanism, and a fuselage binding mechanism; Four supporting legs (2) are vertically mounted at four top corners of the lower side of the top plate (1); the gas sampling mechanism is suspended on the suspension retractable mechanism via a suspension rope (9), and the gas sampling mechanism is provided with a detection insert (41) for inserting into grains; the suspension retractable mechanism is arranged at the center of the lower side of the top plate, and is used to release and recover the gas sampling mechanism; the fuselage binding mechanism is arranged on the upper side of the top plate (1), and is used to mount the top plate (1) on the fuselage of the drone; The gas sampling mechanism comprises a cylindrical collecting box (29), a disc-shaped piston (30), two insertion rods (35) and a supporting plate (59); A suspension ear (33) is provided at the center of the top of the cylindrical collecting box (29), and the end of the suspension rope (9) is fixed on the suspension ear (33); a cylindrical cavity is vertically provided inside the cylindrical collecting box (29), and a disc-shaped piston (30) is installed in the cylindrical cavity; a sealing ring (31) is provided on the circumferential side of the disc-shaped piston (30), and the sealing ring (31) is closely attached to the inner wall of the cylindrical cavity; an exhaust pipe connected to the cylindrical cavity is provided at the top of the cylindrical collecting box (29). , and a closing cap (32) is threadedly installed on the outlet of the exhaust pipe; an exhaust hole (60) communicating with the cylindrical cavity is provided at the bottom of the cylindrical collecting box (29); two side plug holes (61) are vertically provided at the bottom edge of the cylindrical collecting box (29) and extend into the inside of the side wall of the cylindrical collecting box (29), and the two side plug holes (61) are located at two ends of the same diameter of the bottom circumference; two plug rods (35) are respectively inserted into the two side plug holes (61), and A side hole (36) is provided on each of the opposite sides of the upper end of the piston (35); a locking spring (39) is installed in the side hole (36), and a locking projection (37) is installed at the opening of the side hole (36); two limiting holes are provided on the upper wall of the cylindrical cavity, which are respectively connected to the side plug holes (61); a triangular convex tip (38) is provided on each of the two locking projections (37), and the triangular convex tip (38) extends from the limiting hole into the cylindrical cavity, and is used to align the side of the disc-shaped piston (30). The lower ends of the two insertion rods (35) are both mounted on the support plate (59); a central circular hole is provided at the midline of the support plate (59); the upper end of the detection insertion tube (41) vertically penetrates the central circular hole of the support plate (59) and is then mounted at the bottom center of the cylindrical collection box (29); an air guide tube (42) is provided on the upper end wall of the detection insertion tube (41), and the upper end of the air guide tube (42) is mounted on the top of the cylindrical collection box (29) and is connected to the cylindrical cavity; The fuselage binding mechanism comprises two side clamping plates (55), two top pressure plates (53), a steel wire rope (52) and a locking bolt (57); The lower sides of the two side clamping plates (55) are hingedly mounted on the left and right sides of the top plate (1); the two top pressing plates (53) are hingedly mounted together, and both top pressing plates (53) are provided with steel rope holes; a steel rope locking hole (56) is provided on the upper side of the right side clamping plate (55) extending downward, and the lower hole of the steel rope locking hole (56) passes through the right side surface of the side clamping plate (55); a locking bolt (57) is screwed on the right side clamping plate (55) The right side surface of the steel wire rope (52) is provided with an end portion of a locking bolt (57) extending into the steel wire rope locking hole (56), and a steel wire rope clamping plate (58) is rotatably arranged on the extending end portion; one end of the steel wire rope (52) is fixedly mounted on the middle portion of the upper side of the side clamping plate (55) on the left side; the other end of the steel wire rope (52) passes through the steel wire rope holes and the steel wire rope locking hole (56) on the two top pressure plates (53) in sequence and then extends out; the steel wire rope clamping plate (58) is pressed on the steel wire rope (52) to achieve fixation.

2. The granary gas collection device for drone mounting according to claim 1 is characterized in that: The suspension retracting and releasing mechanism comprises a driving motor (6), a driving belt (25), an electromagnet (27), a winding roller (8), a driving circular shaft (14) and a rebound compression spring (18); A wire roller support (7), a pulley support (19) and a side plate (26) are provided on the lower side of the top plate (1); a wire winding roller (8) is rotatably mounted on the wire roller support (7) via a wire roller rotating shaft (12); a pulley rotating shaft (20) is rotatably mounted on the pulley support (19); a driving pulley (21) is fixedly mounted on the pulley rotating shaft (20); a square driving hole and a circular shaft hole are sequentially provided on the wire roller rotating shaft (12) along the central axis, and the side of the square driving hole is The diameter of the circular shaft hole is longer than that of the circular shaft hole; the driving circular shaft (14) sequentially penetrates the square driving hole and the circular shaft hole on the line roller rotating shaft (12) and can rotate freely in the circular shaft hole; a synchronous square shaft (22) is extended at one end of the driving circular shaft (14), and a square shaft head (15) is arranged at the other end of the driving circular shaft (14); a square synchronous hole is arranged on the pulley rotating shaft (20) along the central axis, and the synchronous square shaft (22) is installed in a through-type manner on the square synchronous hole, so that the synchronous square shaft (2 2) rotate synchronously with the pulley shaft (20); a limiting disc (16) is provided on the side of the square shaft head (15), and the diameter of the limiting disc (16) is greater than the side length of the square driving hole; a short shaft (23) is rotatably mounted on the through end of the synchronous square shaft (22), and a magnetic absorption disc (24) is provided on the short shaft (23); an electromagnet (27) is mounted on the side plate (26), and an iron round bar opposite to the magnetic absorption disc (24) is provided at the iron core end of the electromagnet (27). The invention relates to a magnetic disk (28); a rebound compression spring (18) is sleeved on the driving shaft (14), and the two ends of the rebound compression spring (18) are elastically supported on the limiting disk (16) and the wire roller support (7); the driving motor (6) drives the driving pulley (21) to rotate through the driving belt (25); the suspension rope (9) is wound on the winding roller (8); when the iron disk (28) and the magnetic disk (24) are attracted, the driving shaft (14) moves axially so that the square shaft head (15) is embedded in the square driving hole.

3. The granary gas collection device for drone mounting according to claim 2 is characterized in that: A protective plate (10) is provided on the wire roller support (7) and below the wire winding roller (8); a threading hole (11) is provided on the protective plate (10); and a suspension rope (9) passes through the threading hole (11).

4. The granary gas collection device for drone mounting according to claim 2 is characterized in that: A guide slope (17) is provided at the connection between the square shaft head (15) and the driving circular shaft (14) to facilitate the square shaft head (15) to be quickly embedded in the square driving hole; and circular baffles (13) are provided at both ends of the winding roller (8) to prevent the suspension rope (9) from being wound into the gap between the winding roller (8) and the roller support (7).

5. The granary gas collection device for drone mounting according to claim 2 is characterized in that: An infrared position sensor (40) for detecting the rising position of the gas sampling mechanism is provided on the support leg (2); an electrical connection socket (51) is provided on the upper side of the top plate (1); and electrical connection wires of the infrared position sensor (40), the drive motor (6) and the electromagnet (27) are electrically connected to the electrical connection socket (51).

6. The granary gas collection device for drone mounting according to claim 1 is characterized in that: A bottom center hole is provided at the bottom center of the cylindrical collecting box (29), and the upper end of the detection insert tube (41) is connected to the bottom center hole; a closed insert tube (43) is inserted in the bottom center hole, and a guide strip hole (45) is vertically provided on the tube wall of the closed insert tube (43); a guide protrusion (44) embedded in the guide strip hole (45) is provided on the hole wall of the bottom center hole; and a guide protrusion (44) is provided at the upper end of the closed insert tube (43) protruding out of the bottom center hole. , and a supporting compression spring (47) is sleeved on the protruding end; a pressing plate (46) is provided on the upper end of the closed insert tube (43), and the upper and lower ends of the supporting compression spring (47) are supported between the pressing plate (46) and the lower wall of the cylindrical cavity; after the disc-shaped piston (30) moves downward to press the pressing plate (46), the closed insert tube (43) is inserted into the detection insert tube (41), and the tube wall of the closed insert tube (43) closes the lower air inlet of the air guide tube (42).

7. The granary gas collection device for drone mounting according to claim 1 is characterized in that: The lower end of the detection tube (41) is closed by a conical tip (49); a detection air inlet (50) is provided on the lower end tube wall of the detection tube (41); a reinforcing rib rod (48) is provided at the bottom of the cylindrical collection box (29) and is obliquely supported to the detection tube (41); and an inclined enclosure (34) inclined toward the center is provided on the top edge of the cylindrical collection box (29).

8. The granary gas collection device for drone mounting according to claim 1 is characterized by: Elastic rubber pads (54) are provided on the inner side surfaces of the two side clamping plates (55), on the lower side surfaces of the two top pressing plates (53) and on the upper side surface of the top plate (1).

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