A sampling device for gaseous samples for environmental detection

Abstract

The invention relates to the technical field of environmental detection, and discloses a sampling device for gaseous samples for environmental detection, comprising an aircraft body and a sampling component arranged on the aircraft body, wherein auxiliary cabinets are symmetrically arranged on both sides of the aircraft body, a cavity is arranged inside the aircraft body, a driving motor is fixedly connected to the top of the cavity, an annular groove is opened at the bottom of the cavity, a swivel is rotatably connected in the annular groove, a first bevel gear is fixedly connected to the top of the swivel, an output shaft of the driving motor is fixedly connected to the top surface of the first bevel gear, a connecting column is fixedly connected to the bottom of the first bevel gear, the bottom of the connecting column is connected to the sampling component, a first screw rod is rotatably connected to one side wall of the cavity, and the end of the first screw rod is connected to the second bevel gear through a clutch assembly. The invention facilitates the collection of air at different heights and effectively avoids the influence of wind pressure.

Description

Technical Field

[0001] The invention relates to the technical field of environmental detection, and in particular to a sampling device for gaseous samples used for environmental detection. Background Art

[0002] With the development of industrial enterprises and the improvement of people's living standards, the emission of industrial waste gas and domestic waste gas is increasing. In order to protect people's health, it is necessary to monitor the ambient air so that corresponding protective measures can be taken. The gas sampling device is one of the necessary components of air monitoring equipment.

[0003] The Chinese utility model patent with publication number CN214794040U discloses a gas sampling device for rapid collection for ecological environment detection, including a horizontal board and a handheld controller, a suspension rod is symmetrically arranged on the top of the horizontal board, two groups of clamps are arranged side by side on the left side of the bottom end of the horizontal board, and a sampling bottle is clamped and placed in the two groups of clamps, the left end of the sampling bottle is open, and the right end of the sampling bottle is provided with a ring-shaped opening, a piston assembly is arranged in the sampling bottle, a mounting plate is arranged on the right side of the bottom end of the horizontal board, and an electric push rod is installed on the right end of the mounting plate. This solution binds the collection device to a drone for use, realizes the collection of high-altitude gas or gas in difficult-to-reach areas, and enriches the gas sampling method; through the designed piston assembly, bottle body, handheld controller, electric push rod, etc., through remote control, rapid gas collection can be achieved, the operation is simple and convenient, and the gas sealing performance is good.

[0004] However, the above patent still has the following shortcomings: First, when testing the air at different heights, the staff needs to run to the inside of the households at different heights and then open the windows to test the air. Such detection control will disturb the residents and has low work efficiency;

[0005] Second, when a drone carries a collection device to a designated altitude, in order to ensure that the collection device can stay in the collection area, the drone needs to remain in flight. In the flight state, the wind pressure generated by the drone's flight will disrupt the airflow in the collection area, causing the air in the collection area to change, resulting in the air collected by the collection device being non-standard. Summary of the invention

[0006] The object of the present invention is to provide a sampling device for gaseous samples for environmental detection, so as to solve the problems raised in the background technology.

[0007] The present invention provides a sampling device for gaseous samples for environmental detection, comprising an aircraft body and a sampling assembly arranged on the aircraft body, wherein auxiliary cabinets are symmetrically arranged on both sides of the aircraft body, a cavity is arranged inside the aircraft body, a driving motor is fixedly connected to the top of the cavity, an annular groove is provided at the bottom of the cavity, a swivel is rotatably connected in the annular groove, a first bevel gear is fixedly connected to the top of the swivel, an output shaft of the driving motor is fixedly connected to the top surface of the first bevel gear, a connecting column is fixedly connected to the bottom of the first bevel gear, the bottom of the connecting column is connected to the sampling assembly, a first screw rod is rotatably connected to one side wall of the cavity, a clutch assembly is arranged on the first screw rod, and the first screw rod is provided with a plurality of screw rods. The end of the first screw rod is connected to the second bevel gear through a clutch assembly, the second bevel gear is meshed with the first bevel gear, the first screw rod is threadedly connected to the first screw rod, the first screw rod sleeve is provided with a first limiting assembly, the first screw rod sleeve is connected to the inner wall of the cavity through the first limiting assembly, the end of the first screw rod sleeve away from the second bevel gear is symmetrically fixedly connected to a push rod, a sleeve is symmetrically fixedly connected to the outer wall of one side of the aircraft body, the push rod is inserted into the sleeve, the end of the push rod inserted in the sleeve is fixedly connected to a sealing plug, the sealing plug is slidably connected in the sleeve, and the end of the sleeve away from the aircraft body is fixedly connected to a rubber suction cup.

[0008] Preferably, the first limiting assembly includes two first connecting strips, which are symmetrically fixedly connected to the two side walls of the first screw sleeve, and the first limiting grooves are symmetrically opened in the cavity. The first limiting strips are fixedly connected to the first connecting strips, and the first limiting strips are slidably connected to the first limiting grooves.

[0009] Preferably, two extrusion assemblies are symmetrically arranged on the two sub-cabinets, and the two extrusion assemblies are connected by a transmission assembly. The extrusion assembly includes a second screw rod and a second screw rod sleeve. One end of the second screw rod is rotatably connected to the inner wall of the sub-cabinet. The second screw rod sleeve is threadedly connected to the second screw rod. The second screw rod sleeve is connected to the inner wall of the sub-cabinet through the second limiting assembly. The side of the second screw rod close to the transmission assembly is connected to a third bevel gear through a clutch assembly. The third bevel gear is connected to the transmission assembly. The outer wall of the second screw rod sleeve is fixedly connected to the first connecting rod An L-shaped tube is provided on the sub-cabinet, one end of the L-shaped tube is inserted into the inside of the sub-cabinet, and the other end of the L-shaped tube extends to the outside of the sub-cabinet, the first connecting rod is inserted into the L-shaped tube, and the second connecting rod is slidably connected inside the other end of the L-shaped tube, and the first connecting rod and the second connecting rod are inserted into one end of the L-shaped tube and are fixedly connected with oil plugs, and hydraulic oil is filled between the two oil plugs. A tension component is also provided in the two oil plugs, and the transmission component is connected to the output shaft of the drive motor through a belt, and the second connecting rod is fixedly connected with an extrusion block at one end exposed from the L-shaped tube.

[0010] Preferably, the transmission assembly includes a transmission shaft, a bracket is symmetrically fixedly connected to the inner wall of the auxiliary cabinet, the transmission shaft passes through the bracket and is rotatably connected thereto, the top and bottom of the transmission shaft are fixedly connected to fourth bevel gears, the two fourth bevel gears are respectively meshed with the two third bevel gears, and pulleys are fixedly connected to the transmission shaft and the output shaft of the driving motor, and the two pulleys are connected by belts.

[0011] Preferably, the tension component includes a steel wire rope, and a skeleton is provided inside the two oil plugs. Both ends of the steel wire rope are fixedly connected to the two skeletons respectively. The inner wall at the corner of the L-shaped tube is symmetrically fixedly connected with a support rod, and a pulley is rotatably connected between the two support rods, and the pulley is in conflict with the steel wire rope.

[0012] Preferably, the second limiting assembly includes a second connecting bar, the end of the second connecting bar is fixedly connected to a second limiting bar, second limiting grooves are symmetrically provided inside the sub-cabinet, and the second limiting bar is slidably connected to the second limiting groove.

[0013] Preferably, a shovel plate is fixedly connected to the outer peripheral wall of the extrusion block, and the distance between an end surface of the shovel plate away from the aircraft body and the aircraft body is smaller than the distance between an end surface of the rubber suction cup away from the aircraft body and the aircraft body.

[0014] Preferably, the sampling assembly includes a shell, the bottom of the connecting column is fixedly connected to the top of the shell, a negative pressure pump is fixedly connected to the bottom of the shell, an air outlet is fixedly opened at the bottom of the shell, a first solenoid valve is fixedly connected to the air outlet, an air duct is fixedly connected to the top of the negative pressure pump, the air duct is inserted into the air outlet and threadedly connected thereto, and a second solenoid valve is fixedly connected to the side wall of the shell.

[0015] Preferably, the outer side walls of the sub-cabinet are symmetrically fixedly connected with connecting ears, the bottom of the connecting ears is fixedly connected with an outer sleeve, the inside of the outer sleeve is fixedly connected with a first spring, the inside of the outer sleeve is embedded with an inner sleeve, the top of the inner sleeve is fixedly connected to the first spring, and the bottom of the inner sleeve is fixedly connected with a rubber pad.

[0016] Preferably, the clutch assembly includes a plurality of blocks and a plurality of second springs, the ends of the first screw rod and the second screw rod are each provided with a plurality of bayonet holes, the blocks are bayonetly connected to the bayonet holes, the inner walls of the third bevel gear and the second bevel gear are each provided with a plurality of mounting grooves, the second spring is fixed in the mounting groove, and the other end of the second spring is fixedly connected to the block.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The aircraft body of the present invention is used for the flight of the entire sampling device. When the aircraft body flies to a specified floor height, the aircraft body controls the sampling device to move toward the window of the floor as a whole, so that the rubber suction cup is adsorbed on the window glass, and then the driving motor is started. The driving motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the first screw to rotate, thereby controlling the first screw sleeve to move toward the window, so that the push rod squeezes the rubber suction cup from the inside of the sleeve, so that the gap between the rubber suction cup and the glass is reduced, and the adsorption force of the rubber suction cup on the glass is increased, thereby enhancing the overall stability of the sampling device. Then the aircraft body stops the flying action, so that the air at this height is in a natural state, and then the sampling component performs air collection work, thereby facilitating the collection of air at different floor heights, avoiding the influence of wind pressure generated by the aircraft body, and thus improving the effectiveness of air collection.

[0019] (2) When the sampling assembly of the present invention is collecting air, the driving motor will not stop rotating. The rotation of the driving motor will simultaneously drive the connecting column to rotate, and the rotation of the connecting column will drive the sampling assembly to rotate, so that the sampling assembly can collect air at the same height from multiple directions, thereby improving the accuracy of air collection. In addition, when the push rod is blocked by the rubber suction cup and cannot move in a straight line, in order to avoid the collapse of the first screw sleeve, the clutch assembly disconnects the transmission relationship between the second bevel gear and the first screw. It can be understood that when the driving motor continues to rotate, the squeezing force of the push rod on the rubber suction cup is always at the maximum value, thereby improving the stability of the adsorption of the rubber suction cup to the glass.

[0020] (3) In the present invention, the four extrusion blocks move toward the wall of the window simultaneously along the four corners of the sampling device, thereby supporting the sampling device and improving the stability of the sampling device on the window. As the driving motor continues to rotate, the clutch assembly ensures that the extrusion force of the extrusion blocks on the window wall surface is in an optimal state.

[0021] (4) In the present invention, when the extrusion block is reset along with the second connecting rod, the shovel plate will squeeze the side of the rubber suction cup and be inserted between the rubber suction cup and the glass, thereby separating the rubber suction cup from the glass, thereby facilitating the flight of the aircraft body and preventing the aircraft body from using its flying ability to forcibly separate the rubber suction cup from the glass, thereby improving the stability of the aircraft body when flying away and improving safety performance. In addition, since the distance between the end surface of the shovel plate away from the aircraft body and the aircraft body is smaller than the distance between the end surface of the rubber suction cup away from the aircraft body and the aircraft body, the shovel plate will not affect the adsorption of the rubber suction cup and the glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a top view and cross-sectional schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a side cross-sectional schematic diagram of the auxiliary cabinet in the present invention;

[0026] Figure 4 It is a schematic side cross-sectional view of the main body of the aircraft in the present invention;

[0027] Figure 5 for Figure 4 A in the enlarged view;

[0028] Figure 6 This is a schematic diagram of the movement of the second connecting rod pushing the extrusion block in the present invention;

[0029] Figure 7 for Figure 6 The enlarged view of point B in the figure;

[0030] Figure 8 for Figure 2 The enlarged view of point C in the figure;

[0031] Fig. 9 for Figure 2 The enlarged view of point D in the figure;

[0032] Fig.10 It is a schematic cross-sectional view of the outer jacket in the present invention.

[0033] In the figure: 1. aircraft body; 101. cavity; 102. drive motor; 103. annular groove; 104. swivel; 105. first bevel gear; 106. first screw rod; 107. second bevel gear; 108. first screw rod sleeve; 109. push rod; 110. sleeve; 111. sealing plug; 112. rubber suction cup; 113. connecting column; 2. auxiliary cabinet; 201. second screw rod; 202. second screw rod sleeve; 203. third bevel gear; 204. first connecting rod; 205. L-shaped tube; 206. second connecting rod; 207. oil plug; 208. extrusion block; 3. first connecting strip; 301. first limit slot; 302, first limit strip; 4, transmission shaft; 401, bracket; 402, fourth bevel gear; 403, pulley; 5, wire rope; 501, support rod; 502, pulley; 6, second connecting strip; 601, second limit strip; 602, second limit slot; 7, shovel plate; 8, shell; 801, negative pressure pump; 802, air outlet; 803, first solenoid valve; 804, air duct; 805, second solenoid valve; 806, connecting ear; 807, outer sleeve; 808, first spring; 809, inner sleeve; 810, rubber pad; 9, block; 901, second spring; 902, bayonet; 903, installation slot. DETAILED DESCRIPTION

[0034] Combine the following Figure 1-10As shown, an embodiment of the present invention provides a sampling device for gaseous samples for environmental detection, including an aircraft body 1 and a sampling assembly arranged on the aircraft body 1, and auxiliary cabinets 2 are symmetrically arranged on both sides of the aircraft body 1. A cavity 101 is arranged inside the aircraft body 1, and a driving motor 102 is fixedly connected to the top of the cavity 101. An annular groove 103 is opened at the bottom of the cavity 101, and a rotating ring 104 is rotatably connected in the annular groove 103. A first bevel gear 105 is fixedly connected to the top of the rotating ring 104, and an output shaft of the driving motor 102 is fixedly connected to the top surface of the first bevel gear 105. A connecting column 113 is fixedly connected to the bottom of the first bevel gear 105, and the bottom of the connecting column 113 is connected to the sampling assembly. A first screw rod 106 is rotatably connected to one side wall of the cavity 101, and a clutch assembly is arranged on the first screw rod 106. The end of the first screw rod 106 is connected to the second bevel gear 107 through a clutch assembly, and the second bevel gear 107 is meshed with the first bevel gear 105. A first screw rod sleeve 108 is threadedly connected to the first screw rod 106, and a first limiting assembly is provided on the first screw rod sleeve 108. The first screw rod sleeve 108 is connected to the inner wall of the cavity 101 through the first limiting assembly, and the end of the first screw rod sleeve 108 away from the second bevel gear 107 is symmetrically fixedly connected with a push rod 109, and a sleeve 110 is symmetrically fixedly connected to the outer wall of one side of the aircraft body 1, and the push rod 109 is inserted in the sleeve 110. A sealing plug 111 is fixedly connected to one end of the push rod 109 inserted in the sleeve 110, and the sealing plug 111 is slidably connected in the sleeve 110, and a rubber suction cup 112 is fixedly connected to one end of the sleeve 110 away from the aircraft body 1.

[0035] Specifically: the aircraft body 1 is used for the flight of the entire sampling device. When the aircraft body 1 flies to a specified floor height, the aircraft body 1 controls the sampling device to move toward the window of the floor as a whole, so that the rubber suction cup 112 is adsorbed on the window glass, and then the driving motor 102 is started, the driving motor 102 drives the first bevel gear 105 to rotate, the first bevel gear 105 drives the second bevel gear 107 to rotate, and the second bevel gear 107 drives the first screw rod 106 to rotate, thereby controlling the first screw rod sleeve 108 to move toward the window direction, so that the push rod 109 squeezes the rubber suction cup 112 from the inside of the sleeve 110, so that the gap between the rubber suction cup 112 and the glass is reduced, and the adsorption force of the rubber suction cup 112 on the glass is increased, thereby enhancing the overall stability of the sampling device, and then the aircraft body 1 stops the flying action, so that the air at this height is in a natural state, and then the sampling component performs air collection work, so as to facilitate the collection of air at different floor heights, avoid the influence of wind pressure generated by the aircraft body 1, and thus improve the effectiveness of air collection;

[0036] Among them, when the sampling component is collecting air, the driving motor 102 will not stop rotating, and the rotation of the driving motor 102 will simultaneously drive the connecting column 113 to rotate, and the rotation of the connecting column 113 drives the sampling component to rotate, so that the sampling component can collect air at the same height in multiple directions, thereby improving the accuracy of air collection, and when the push rod 109 is blocked by the rubber suction cup 112 and cannot move in a straight line, in order to avoid the collapse of the first screw sleeve 108, the clutch assembly disconnects the transmission relationship between the second bevel gear 107 and the first screw 106. It can be understood that when the driving motor 102 continues to rotate, the squeezing force of the push rod 109 on the rubber suction cup 112 is always at the maximum value, thereby improving the stability of the adsorption of the rubber suction cup 112 to the glass.

[0037] The first limiting assembly includes two first connecting strips 3, which are symmetrically fixedly connected to the two side walls of the first screw sleeve 108. A first limiting groove 301 is symmetrically opened in the cavity 101. The first connecting strips 3 are fixedly connected to the first limiting strips 302, and the first limiting strips 302 are slidably connected to the first limiting groove 301. In this setting, the first limiting groove 301 is used to limit the rotation of the first limiting strip 302, thereby limiting the rotation of the first screw sleeve 108, thereby ensuring that the first screw sleeve 108 can perform linear reciprocating movement.

[0038] Two extrusion assemblies are symmetrically arranged on the two sub-cabinets 2, and the two extrusion assemblies are connected through a transmission assembly. The extrusion assembly includes a second screw rod 201 and a second screw rod sleeve 202. One end of the second screw rod 201 is rotatably connected to the inner wall of the sub-cabinet 2, and the second screw rod sleeve 202 is threadedly connected to the second screw rod 201. The second screw rod sleeve 202 is connected to the inner wall of the sub-cabinet 2 through a second limiting assembly. The side of the second screw rod 201 close to the transmission assembly is connected to a third bevel gear 203 through a clutch assembly. The third bevel gear 203 is connected to the transmission assembly. The outer wall of the second screw rod sleeve 202 is fixedly connected to a first connecting rod 204. An L-shaped pipe is arranged on the sub-cabinet 2. 205, one end of the L-shaped tube 205 is inserted into the inside of the sub-cabinet 2, and the other end of the L-shaped tube 205 extends to the outside of the sub-cabinet 2, the first connecting rod 204 is inserted in the L-shaped tube 205, and the other end of the L-shaped tube 205 is slidably connected to the inside of the second connecting rod 206, and the first connecting rod 204 and the second connecting rod 206 are inserted into one end of the L-shaped tube 205 and are fixedly connected with oil plugs 207, and hydraulic oil is filled between the two oil plugs 207. A tension component is also arranged in the two oil plugs 207, and the transmission component is connected to the output shaft of the drive motor 102 through a belt, and the second connecting rod 206 is fixedly connected with an extrusion block 208 at one end exposed from the L-shaped tube 205.

[0039] The second limiting assembly includes a second connecting strip 6, the end of which is fixedly connected to a second limiting strip 601, a second limiting groove 602 is symmetrically provided inside the sub-cabinet 2, and the second limiting strip 601 is slidably connected to the second limiting groove 602. In this arrangement, the second limiting groove 602 and the second limiting strip 601 are used to rotationally limit the second screw sleeve 202 to ensure that the second screw sleeve 202 can perform linear reciprocating movement.

[0040] Specifically: when the driving motor 102 increases the adsorption force of the rubber suction cup 112 on the glass through the push rod 109, the rotation of the driving motor 102 will drive the transmission component through the belt connection at the same time. The transmission component is used to drive the two extrusion components in the two sub-cabinets 2 to start. A total of four extrusion components are started at the same time. When the extrusion component is started, the transmission component first drives the third bevel gear 203 to rotate, and the third bevel gear 203 drives the second screw rod 201 to rotate, so that the second screw rod sleeve 202 of Dadong moves linearly, thereby pushing the oil plug 207 to move linearly through the first connecting rod 204, and pushing another oil plug 207 through the hydraulic oil, so that the second connecting rod 206 moves linearly, and the linear movement of the second connecting rod 206 causes the extrusion block 208 to squeeze and conflict with the wall surface of the window;

[0041] It can be understood that the four extrusion blocks 208 move toward the wall of the window simultaneously along the four corners of the sampling device, thereby supporting the sampling device and improving the stability of the sampling device on the window. As the driving motor 102 continues to rotate, the clutch assembly ensures that the extrusion force of the extrusion blocks 208 on the window wall surface is in an optimal state.

[0042] The transmission assembly includes a transmission shaft 4, and a bracket 401 is symmetrically fixedly connected to the inner wall of the sub-cabinet 2. The transmission shaft 4 passes through the bracket 401 and is rotatably connected thereto. The top and bottom of the transmission shaft 4 are fixedly connected to the fourth bevel gear 402, and the two fourth bevel gears 402 are respectively meshed and connected with the two third bevel gears 203. The transmission shaft 4 and the output shaft of the driving motor 102 are fixedly connected with pulleys 403, and the two pulleys 403 are connected by belts. In this arrangement, when the driving motor 102 rotates, the fourth bevel gear 402 is driven to rotate by the cooperation of the pulley 403 and the belt, so that the fourth bevel gear 402 drives the third bevel gear 203 to rotate, thereby completing the transmission effect.

[0043] The tension component includes a steel wire rope 5. A skeleton is provided inside the two oil plugs 207. Both ends of the steel wire rope 5 are fixedly connected to the two skeletons respectively. The inner wall at the corner of the L-shaped tube 205 is symmetrically fixedly connected with a support rod 501. A pulley 502 is rotatably connected between the two support rods 501, and the pulley 502 is in conflict with the steel wire rope 5.

[0044] Specifically, after the sampling device as a whole completes the sampling operation, the aircraft body 1 resumes the flight state, the driving motor 102 rotates in the opposite direction, the rubber suction cup 112 loses the squeezing force of the push rod 109, and the first connecting rod 204 is reset, so that the first connecting rod 204 pulls the oil plug 207 in the second connecting rod 206 through the wire rope 5, so that the second oil plug 207 is reset, so that the squeezing block 208 no longer squeezes the wall of the window, thereby facilitating the flight of the aircraft body 1.

[0045] A shovel plate 7 is fixedly connected to the outer peripheral wall of the extrusion block 208 , and the distance between the end surface of the shovel plate 7 away from the aircraft body 1 and the aircraft body 1 is smaller than the distance between the end surface of the rubber suction cup 112 away from the aircraft body 1 and the aircraft body 1 .

[0046] Specifically: when the extrusion block 208 is reset along with the second connecting rod 206, the shovel plate 7 will squeeze the side of the rubber suction cup 112 and be inserted between the rubber suction cup 112 and the glass, thereby separating the rubber suction cup 112 from the glass, thereby facilitating the flight of the aircraft body 1 and preventing the aircraft body 1 from using its flying ability to forcibly separate the rubber suction cup 112 from the glass, thereby improving the stability of the aircraft body 1 when flying away and improving the safety performance. In addition, since the distance between the end surface of the shovel plate 7 away from the aircraft body 1 and the aircraft body 1 is smaller than the distance between the end surface of the rubber suction cup 112 away from the aircraft body 1 and the aircraft body 1, the shovel plate 7 will not affect the adsorption of the rubber suction cup 112 and the glass.

[0047] The sampling assembly includes a shell 8, the bottom of the connecting column 113 is fixedly connected to the top of the shell 8, a negative pressure pump 801 is fixedly connected to the bottom of the shell 8, an air outlet 802 is fixedly opened at the bottom of the shell 8, a first solenoid valve 803 is fixedly connected to the air outlet 802, an air duct 804 is fixedly connected to the top of the negative pressure pump 801, the air duct 804 is inserted into the air outlet 802 and threadedly connected thereto, and a second solenoid valve 805 is fixedly connected to the side wall of the shell 8.

[0048] Specifically: before the aircraft body 1 flies to the designated collection area, the negative pressure pump 801 will first discharge the gas inside the outer shell 8, so that the inside of the outer shell 8 is in a negative pressure state, and then when collecting air, the first solenoid valve 803 will be closed first, and then the second solenoid valve 805 will be opened, so as to complete the air collection under the action of negative pressure, and finally the second solenoid valve 805 will be closed to seal the outer shell 8.

[0049] The outer side walls of the sub-cabinet 2 are symmetrically fixedly connected with connecting ears 806, the bottom of the connecting ears 806 is fixedly connected with an outer sleeve 807, the inside of the outer sleeve 807 is fixedly connected with a first spring 808, the inside of the outer sleeve 807 is embedded with an inner sleeve 809, the top of the inner sleeve 809 is fixedly connected to the first spring 808, and the bottom of the inner sleeve 809 is fixedly connected with a rubber pad 810. In this arrangement, when the sampling device as a whole is placed at ordinary times, the two sub-cabinets 2 and the aircraft body 1 are supported by the inner sleeve 809 and the rubber pad 810, and the sampling components are effectively prevented from directly contacting the ground, and the first spring 808 can buffer the force of vibration and protect the sampling device as a whole.

[0050] The clutch assembly includes multiple blocks 9 and multiple second springs 901. The ends of the first screw rod 106 and the second screw rod 201 are each provided with multiple bayonet holes 902. The blocks 9 are connected to the bayonet holes 902 by snapping. The inner walls of the third bevel gear 203 and the second bevel gear 107 are each provided with multiple mounting grooves 903. The second spring 901 is fixed in the mounting groove 903. The other end of the second spring 901 is fixedly connected to the block 9.

[0051] Specifically: when the extrusion force between the extrusion block 208 and the window wall surface reaches a critical value or the adsorption force between the rubber suction cup 112 and the glass reaches a critical value, the block 9 is squeezed out of the bayonet 902, so that the first screw rod 106 and the second screw rod 201 no longer rotate, thereby avoiding the equipment collapse, wherein the critical value is the state in which the push rod 109 can no longer deform the rubber suction cup 112 by squeezing and the state in which the second connecting rod 206 can no longer drive the extrusion block 208 to move linearly.

[0052] Working principle: the aircraft body 1 is used for the flight of the entire sampling device. When the aircraft body 1 flies to the specified floor height, the aircraft body 1 controls the sampling device to move toward the window of the floor as a whole, so that the rubber suction cup 112 is adsorbed on the window glass, and then the driving motor 102 is started, and the driving motor 102 drives the first bevel gear 105 to rotate, and the first bevel gear 105 drives the second bevel gear 107 to rotate, and the second bevel gear 107 drives the first screw rod 106 to rotate, thereby controlling the first screw rod sleeve 108 to move toward the window direction, so that the push rod 109 squeezes the rubber suction cup 112 from the inside of the sleeve 110, so that the gap between the rubber suction cup 112 and the glass is reduced, and the adsorption force of the rubber suction cup 112 on the glass is increased, thereby enhancing the overall stability of the sampling device, and then the aircraft body 1 stops the flying action, so that the air at this height is in a natural state, and then the sampling component collects air, so as to facilitate the collection of air at different floor heights, avoid the influence of wind pressure generated by the aircraft body 1, and thus improve the effectiveness of air collection.

Claims

1. A sampling device for gaseous samples for environmental detection, comprising an aircraft body (1) and a sampling assembly arranged on the aircraft body (1), characterized in that: Sub-cabinets (2) are symmetrically arranged on both sides of the aircraft body (1); a cavity (101) is arranged inside the aircraft body (1); a driving motor (102) is fixedly connected to the top of the cavity (101); an annular groove (103) is provided at the bottom of the cavity (101); a rotating ring (104) is rotatably connected in the annular groove (103); a first bevel gear (105) is fixedly connected to the top of the rotating ring (104); an output shaft of the driving motor (102) is fixedly connected to the top surface of the first bevel gear (105); a connecting column (113) is fixedly connected to the bottom of the first bevel gear (105); the bottom of the connecting column (113) is connected to the sampling component; a first screw rod (106) is rotatably connected to a side wall of the cavity (101); a clutch component is arranged on the first screw rod (106); an end of the first screw rod (106) is connected to a second bevel gear (107) via the clutch component; The second bevel gear (107) is meshedly connected with the first bevel gear (105); a first screw sleeve (108) is threadedly connected to the first screw rod (106); a first limit assembly is arranged on the first screw sleeve (108); the first screw sleeve (108) is connected to the inner wall of the cavity (101) through the first limit assembly; a push rod (109) is symmetrically fixedly connected to one end of the first screw sleeve (108) away from the second bevel gear (107); a sleeve (110) is symmetrically fixedly connected to the outer wall of one side of the aircraft body (1); the push rod (109) is inserted into the sleeve (110); a sealing plug (111) is fixedly connected to one end of the push rod (109) inserted into the sleeve (110); the sealing plug (111) is slidably connected in the sleeve (110); and a rubber suction cup (112) is fixedly connected to one end of the sleeve (110) away from the aircraft body (1); Two extrusion assemblies are symmetrically arranged on the two sub-cabinets (2); a transmission assembly is arranged between the two extrusion assemblies inside the same sub-cabinet (2); the extrusion assembly comprises a second screw rod (201) and a second screw rod sleeve (202); one end of the second screw rod (201) is rotatably connected to the inner wall of the sub-cabinet (2); the second screw rod sleeve (202) is threadedly connected to the second screw rod (201); a second limit assembly is arranged on the second screw rod sleeve (202); the second screw rod sleeve (202) is connected to the inner wall of the sub-cabinet (2) via the second limit assembly; a side of the second screw rod (201) close to the transmission assembly is connected to a third bevel gear (203) via a clutch assembly; the third bevel gear (203) is connected to the transmission assembly; the outer wall of the second screw rod sleeve (202) is fixedly connected to a first connecting rod (20 4), an L-shaped tube (205) is provided on the auxiliary cabinet (2), one end of the L-shaped tube (205) is inserted into the interior of the auxiliary cabinet (2), and the other end of the L-shaped tube (205) is extended to the outside of the auxiliary cabinet (2), the first connecting rod (204) is inserted into the L-shaped tube (205), and the other end of the L-shaped tube (205) is slidably connected to the interior of the second connecting rod (206), and the first connecting rod (204) and the second connecting rod (206) are both fixedly connected to one end of the L-shaped tube (205), and the two oil plugs (207) are filled with hydraulic oil, and the two oil plugs (207) are also provided with a tension component, and the transmission component is connected to the output shaft of the drive motor (102) through a belt, and the second connecting rod (206) is fixedly connected to one end of the L-shaped tube (205) exposed to the extrusion block (208); A shovel plate (7) is fixedly connected to the outer peripheral wall of the extrusion block (208), and the distance between the end surface of the shovel plate (7) away from the aircraft body (1) and the aircraft body (1) is smaller than the distance between the end surface of the rubber suction cup (112) away from the aircraft body (1) and the aircraft body (1).

2. A sampling device for gaseous samples for environmental detection according to claim 1, characterized in that: The first limiting assembly comprises two first connecting strips (3), the two first connecting strips (3) are symmetrically fixedly connected to the two side walls of the first screw sleeve (108), the first limiting grooves (301) are symmetrically opened in the cavity (101), the first connecting strips (3) are fixedly connected to the first limiting strips (302), and the first limiting strips (302) are slidably connected to the first limiting grooves (301).

3. The sampling device for gaseous samples for environmental detection according to claim 1, characterized in that: The transmission assembly comprises a transmission shaft (4); a bracket (401) is symmetrically fixedly connected to the inner wall of the auxiliary cabinet (2); the transmission shaft (4) passes through the bracket (401) and is rotatably connected thereto; a fourth bevel gear (402) is fixedly connected to the top and bottom of the transmission shaft (4); the two fourth bevel gears (402) are respectively meshed and connected to the two third bevel gears (203); a pulley (403) is fixedly connected to the transmission shaft (4) and the output shaft of the drive motor (102); and the two pulleys (403) are connected via a belt.

4. The sampling device for gaseous samples for environmental detection according to claim 1, characterized in that: The tension component includes a steel wire rope (5), and a skeleton is provided inside the two oil plugs (207). The two ends of the steel wire rope (5) are fixedly connected to the two skeletons respectively. The inner wall at the corner of the L-shaped tube (205) is symmetrically fixedly connected with a support rod (501), and a pulley (502) is rotatably connected between the two support rods (501), and the pulley (502) is in conflict with the steel wire rope (5).

5. The sampling device for gaseous samples for environmental detection according to claim 1, characterized in that: The second limiting assembly comprises a second connecting strip (6), the end of the second connecting strip (6) is fixedly connected to a second limiting strip (601), a second limiting groove (602) is symmetrically provided inside the auxiliary cabinet (2), and the second limiting strip (601) is slidably connected to the second limiting groove (602).

6. The sampling device for gaseous samples for environmental detection according to claim 1, characterized in that: The sampling assembly comprises a housing (8), the bottom of the connecting column (113) is fixedly connected to the top of the housing (8), the bottom of the housing (8) is fixedly connected to a negative pressure pump (801), the bottom of the housing (8) is fixedly provided with an air outlet (802), the air outlet (802) is fixedly connected to a first solenoid valve (803), the top of the negative pressure pump (801) is fixedly connected to an air duct (804), the air duct (804) is inserted into the air outlet (802) and is threadedly connected thereto, and the side wall of the housing (8) is fixedly connected to a second solenoid valve (805).

7. A sampling device for gaseous samples for environmental detection according to claim 1, characterized in that: The outer side walls of the sub-cabinet (2) are symmetrically fixedly connected with connecting ears (806), the bottom of the connecting ears (806) is fixedly connected with an outer sleeve (807), the interior of the outer sleeve (807) is fixedly connected with a first spring (808), the interior of the outer sleeve (807) is embedded with an inner sleeve (809), the top of the inner sleeve (809) is fixedly connected to the first spring (808), and the bottom of the inner sleeve (809) is fixedly connected with a rubber pad (810).

8. The sampling device for gaseous samples for environmental detection according to claim 1, characterized in that: The clutch assembly comprises a plurality of clamping blocks (9) and a plurality of second springs (901); the ends of the first screw rod (106) and the second screw rod (201) are both provided with a plurality of clamping holes (902); the clamping blocks (9) are clamped and connected with the clamping holes (902); the inner walls of the third bevel gear (203) and the second bevel gear (107) are both provided with a plurality of mounting grooves (903); the second springs (901) are fixed in the mounting grooves (903); and the other end of the second spring (901) is fixedly connected with the clamping block (9).

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