An atmospheric particulate matter sampling device

Abstract

The present invention relates to an atmospheric particulate matter sampling technology, which is used to solve the problem that when the sampling box is transported to the top of a mountain, a cable car is shaken by the external wind, causing the sampling box to move and fall, and the sampling box is located at a high place and is susceptible to lightning strikes. The present invention is specifically an atmospheric particulate matter sampling device, including a sampling box; the present invention drives an extrusion block to be pressed down by a rotating friction roller, so that the extrusion force between the extrusion block and the cable car seat is increased, and the position of the sampling box is further limited; a lightning rod is arranged on the lower surface of the fixed clamping plate, so as to improve the lightning protection effect of the sampling equipment, and the wind force and impact force that cause the cable car to shake are analyzed by a shaking analysis module, and the angle data causing the cable car to tilt is compared with the preset inclination angle data to determine whether the cable car will shake, and when it is determined that the cable car will shake, the extrusion block increases the clamping force on the cable car seat board, so that the subsequent shaking will not cause the position of the sampling box to move.

Description

Technical Field

[0001] The invention relates to an atmospheric particle sampling technology, in particular to an atmospheric particle sampling device. Background Art

[0002] Atmospheric particulate sampling equipment is used to monitor and analyze particulate matter in ambient air, especially fine particulate matter and inhalable particulate matter. It is essential for assessing air quality, studying the sources and effects of air pollutants, and formulating corresponding environmental protection policies.

[0003] In the prior art, most atmospheric particulate sampling equipment is installed on high mountains. When the installers use the cableway to carry the equipment to the top of the mountain, the equipment placed inside the cableway is prone to slipping when the cableway is shaken by the wind in the external environment, causing inconvenience to the installers carrying the equipment. The sampling equipment is easily struck by lightning when installed at a high place, causing damage to the equipment.

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] The purpose of the present invention is to drive the extrusion block downward by rotating the friction roller, so as to increase the extrusion force between the extrusion block and the cable car seat, and further limit the position of the sampling box; a lightning rod is arranged on the lower surface of the fixed splint to improve the lightning protection effect of the sampling equipment, and the wind force and impact force that cause the cable car to sway are analyzed by the sway analysis module, and the angle data causing the cable car to tilt are compared with the preset inclination data to determine whether the cable car will sway, and when it is determined that the cable car will sway, a signal is transmitted to the sway processing module to make the extrusion block intensify the clamping force on the cable car seat board, so that the subsequent sway will not cause the position of the sampling box to move, and solve the problem that during the transportation of the sampling box to the top of the mountain, the cable car is affected by the external wind and shakes, causing the sampling box to move and fall, and the sampling box is located at a high place and is prone to lightning strikes, and an atmospheric particulate matter sampling device is proposed.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] An atmospheric particulate matter sampling device comprises a sampling box, wherein support feet are installed on both sides of the outer wall of the sampling box, adjustment components are arranged at positions corresponding to the support feet on both sides of the outer wall of the sampling box, a clamping component is arranged at the middle position of the rear surface of the sampling box, and a detection component is arranged at the position corresponding to the clamping component inside the sampling box.

[0008] As a preferred embodiment of the present invention, the adjustment component includes a lifting slide rail, and a group of lifting slide rails are installed on both sides of the outer wall of the sampling box. A sliding plate is slidably connected to the inner side of the lifting slide rail, and a connecting buckle is integrally formed at the outer wall of the sliding plate corresponding to the position of the supporting foot, and a limit card is installed on the outer wall of the sliding plate near the top of the connecting buckle.

[0009] As a preferred embodiment of the present invention, a hole is provided at the middle position of the outer side wall of the limit card, a telescopic spring is installed inside the hole, and a plurality of evenly distributed slots are provided on the inner side of the lifting rail corresponding to the position of the limit card.

[0010] As a preferred embodiment of the present invention, the clamping assembly includes a limiting rotating plate, which is rotatably connected to the middle position of the rear surface of the sampling box, and buckle seats are installed in four directions of up, down, left and right on the rear surface of the sampling box corresponding to the limiting rotating plate, and connecting buckles are arranged on both sides of the outer wall of the limiting rotating plate.

[0011] As a preferred embodiment of the present invention, the clamping assembly also includes a movable splint, a fixed splint is integrally formed on the side of the outer wall of the limiting rotating plate away from the sampling box, a telescopic rod is installed at the middle position of the lower surface of the fixed splint, a lightning wire is provided at one end of the telescopic rod, and adjustment grooves are provided on both sides of the outer wall of the limiting rotating plate near the top of the fixed splint, a movable splint is slidably connected at the position of the adjustment groove on the outer wall of the limiting rotating plate corresponding to the position of the adjustment groove, a connecting slider is provided at the outer wall of the movable splint corresponding to the position of the adjustment groove, a frame plate is integrally formed on the upper surface of the limiting rotating plate, and a clamping push rod is installed at the position of the frame plate on the upper surface of the movable splint.

[0012] As a preferred embodiment of the present invention, the clamping assembly also includes a friction roller, a fixed rod is installed at the middle position of the upper surface of the movable splint, both ends of the fixed rod are rotatably connected with rotating rods, the inner side of the rotating rod is rotatably connected with the friction roller through a rotating shaft, holes are opened on both sides of the upper surface of the movable splint corresponding to the positions of the friction rollers, a rubber sleeve is installed on the outer wall of the friction roller, and the outer side of the rubber sleeve is in the shape of convex teeth, a rotating seat is installed on the upper surface of the two rotating rods, support plates are installed on both sides of the upper surface of the fixed rod, and the outer wall of the support plate is rotatably connected to an electric push rod through a rotating seat at the position corresponding to the rotating seat.

[0013] As a preferred embodiment of the present invention, the clamping assembly also includes an extrusion block, the outer side of the connection position between the fixed rod and the rotating rod is rotatably connected with a rotating tooth, the upper surface of the movable clamping plate is provided with a sliding hole close to the rotating tooth position, the inner side of the sliding hole is slidably connected with a sliding tooth plate, the lower end of the sliding tooth plate is integrally formed with an extrusion block, and an adjustment push rod is installed on the upper surface of the fixed rod corresponding to the position of the sliding tooth plate.

[0014] As a preferred embodiment of the present invention, the detection component includes a shaking detection module, a shaking analysis module and a shaking processing module;

[0015] The sway detection module detects the cable car speed, the ambient wind force, the vibration caused by the external impact on the cable car, and the cable car sway amplitude, and transmits the detected cable car speed data, ambient wind force data, impact intensity data, and cable car inclination angle data to the sway analysis module for data processing;

[0016] The sway analysis module analyzes the environmental wind force data, the impact strength data and the cable car speed data in turn to determine whether the cable car will be shaken. If it is determined that the cable car will be shaken, an anti-displacement clamping signal is generated and transmitted to the sway processing module;

[0017] The sway processing module receives the anti-displacement clamping signal transmitted by the sway analysis module, and then controls the extension of the adjustment push rod connected to the sliding tooth plate to push the extrusion block downward to perform the clamping operation.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The height of the sampling box is adjusted by the lifting slide rail, so that the movable clamping plate clamps the cable car bench with the fixed clamping plate under the push of the clamping push rod, so as to limit the position of the sampling box, so that the sampling box is not easily displaced when the cable car shakes, and the friction rollers on the rotating rods on the rear sides are rotated and lowered under the action of the electric push rod, pass through the hole groove and closely contact the surface of the cable car bench. When the sampling box is displaced due to shaking, the rotating friction roller drives the extrusion block to press down, so that the extrusion force between the extrusion block and the cable car bench is increased, and the position of the sampling box is further limited; a lightning rod connected by a telescopic rod is arranged on the lower surface of the fixed clamping plate, which can be grounded through a lightning conductor connected to the lightning rod, so as to improve the lightning protection effect of the sampling equipment;

[0020] By analyzing the wind and impact forces that cause the cable car to sway through the sway analysis module, we can find out how much wind and impact force will cause the cable car to tilt, and compare the angle data causing the cable car to tilt with the preset inclination data to determine whether the cable car will sway. When it is determined that the cable car will sway, a signal is transmitted to the sway processing module to make the extrusion block intensify the clamping force on the cable car seat board, so that subsequent shaking will not cause the position of the sampling box to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is the main structure diagram of the present invention;

[0023] Figure 2 It is a structural diagram of a limited rotating plate of the present invention;

[0024] Figure 3 It is a structural diagram of the extrusion block of the present invention;

[0025] Figure 4 It is a structural diagram of the telescopic rod of the present invention;

[0026] Figure 5 It is a structural diagram of the sliding tooth plate of the present invention;

[0027] Figure 6 is a system structure diagram of the present invention;

[0028] In the figure: 1. Support foot; 2. Sampling box; 31. Lifting slide rail; 32. Connecting buckle; 33. Limit card; 41. Limiting rotating plate; 42. Lightning wire; 43. Fixed splint; 44. Friction roller; 45. Frame plate; 46. Movable splint; 47. Extrusion block; 48. Rotating rod; 49. Rotating seat; 410. Support plate; 411. Hole groove; 412. Telescopic rod; 413. Rotating teeth; 414. Sliding tooth plate; 415. Fixed rod; 416. Adjusting slide groove. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0030] See also Figure 1-6 As shown, an atmospheric particulate sampling device includes a sampling box 2, support feet 1 are installed on both sides of the outer wall of the sampling box 2, adjustment components are arranged at the positions of the support feet 1 on both sides of the outer wall of the sampling box 2, a clamping component is arranged at the middle position of the rear surface of the sampling box 2, and a detection component is arranged at the position of the clamping component inside the sampling box 2;

[0031] The adjusting component includes a lifting rail 31, and a group of lifting rails 31 are installed on both sides of the outer wall of the sampling box 2. The inner side of the lifting rail 31 is slidably connected with a sliding plate, and the sliding plate slides on the inner side of the lifting rail 31 to facilitate the height adjustment of the sampling box 2. A connecting buckle 32 is integrally formed at the outer wall of the sliding plate corresponding to the position of the supporting foot 1, and a limit card 33 is installed on the outer wall of the sliding plate near the upper part of the connecting buckle 32. A hole is opened at the middle position of the outer wall of the limit card 33, and a telescopic spring is installed inside the hole. One end of the telescopic spring is connected to the inner side of the hole on the limit card 33, and the other end is connected to the sliding plate. When the sliding plate slides up and down inside the lifting rail 31, the limit card 33 is inserted into the slot inside the lifting rail 31 under the action of the telescopic spring, so as to limit the position of the sliding plate inside the lifting rail 31. A number of evenly distributed slots are opened at the position of the limit card 33 corresponding to the inner side of the lifting rail 31.

[0032] The clamping assembly includes a limiting rotating plate 41, the middle part of which is a circular rotating plate. When the limiting rotating plate 41 rotates around the center of the circular rotating plate, the position of the limiting rotating plate 41 can be limited by the docking between the connecting buckle and the buckle seat. The limiting rotating plate 41 is rotatably connected at the middle position of the rear surface of the sampling box 2, and buckle seats are installed in the four directions of up, down, left and right on the rear surface of the sampling box 2 corresponding to the limiting rotating plate 41. Connecting buckles are arranged on both sides of the outer wall of the limiting rotating plate 41, and a fixed splint 43 is integrally formed on the side of the outer wall of the limiting rotating plate 41 away from the sampling box 2. A telescopic rod 412 is installed at the middle position of the lower surface of the fixed splint 43, and a lightning rod is connected to the outside of the telescopic rod 412. The lightning rod is connected to the lightning conductor 42, and one end of the telescopic rod 412 is provided with a There is a lightning wire 42, and adjusting grooves 416 are opened on both sides of the outer wall of the rotating plate 41 near the top of the fixed clamping plate 43. The outer wall of the rotating plate 41 is slidably connected with a movable clamping plate 46 at the position corresponding to the adjusting groove 416. A connecting slider is provided at the outer wall of the movable clamping plate 46 corresponding to the position of the adjusting groove 416. The upper surface of the rotating plate 41 is integrally formed with a frame plate 45, and the other end of the clamping push rod installed on the frame plate 45 is connected to the upper surface of the movable clamping plate 46. The movable clamping plate 46 is driven to slide in the inner side of the adjusting groove 416 through the change in the length of the clamping push rod. A clamping push rod is installed at the position of the upper surface of the movable clamping plate 46 corresponding to the frame plate 45, and a fixed rod 415 is installed at the middle position of the upper surface of the movable clamping plate 46. Both ends of the fixed rod 415 are A rotating rod 48 is rotatably connected, and a friction roller 44 is rotatably connected to the inner side of the rotating rod 48 through a rotating shaft. Holes 411 are provided on both sides of the upper surface of the movable splint 46 at positions corresponding to the friction rollers 44. Rubber sleeves are installed on the outer walls of the friction rollers 44, and the outer sides of the rubber sleeves are convex teeth. The friction rollers 44 on both sides are lowered after the electric push rod is extended, and are in close contact with the bench surface on the cableway. When the sampling box 2 moves, the friction rollers 44 on both sides will rotate due to friction. When the friction roller 44 on one side rotates, it drives the rotating teeth 413 on the rotating rod 48 on the same side to rotate, and the rotating teeth 413 and the convex tooth parts of the sliding tooth plate 414 are engaged with each other. When the friction roller 44 rotates due to the displacement of the sampling box 2, the two rotating teeth 413 rotating in the same direction make the fixed rod 2 rotate. One of the sliding tooth plates 414 on both sides of 415 moves upward, and the other moves downward. The sliding tooth plate 414 moving downward makes the extrusion block 47 and the fixed clamping plate 43 clamp the middle cableway bench more tightly. The upper surfaces of the two rotating rods 48 are both installed with rotating seats 49. Support plates 410 are installed on both sides of the upper surface of the fixed rod 415. The outer wall of the support plate 410 corresponds to the position of the rotating seat 49 and is rotatably connected to an electric push rod through the rotating seat 49. The outer side of the connecting position of the fixed rod 415 and the rotating rod 48 is rotatably connected with a rotating tooth 413. A transmission cavity is opened inside the rotating rod 48. The connecting shaft of the friction roller 44 is located on one side of the transmission cavity and a transmission wheel 1 is installed. The connecting shaft of the rotating tooth 413 is located on one side of the transmission cavity and a transmission wheel 2 is installed.The driving wheel 1 and the driving wheel 2 are connected through a driving belt, so that when the friction roller 44 rotates, the rotating gear 413 is driven to rotate synchronously. A sliding hole is opened on the upper surface of the movable clamping plate 46 near the rotating gear 413. A sliding tooth plate 414 is slidably connected to the inner side of the sliding hole. An extrusion block 47 is integrally formed at the lower end of the sliding tooth plate 414. An adjusting push rod is installed on the upper surface of the fixed rod 415 at a position corresponding to the sliding tooth plate 414.

[0033] When the lift truck 2 is lifted up, the limit plate 33 is pushed down and the limit switch 33 is pushed back to the bottom of the lifting rail 31, and the limit switch 33 is pushed back to the bottom of the lifting rail 31, so that the limit switch 33 on the rear surface of the lift truck 2 is aligned with the lift truck seat. The rotating rod 48 rotates, causing the friction roller 44 to move to the inside of the hole groove 411, and part of the friction roller 44 is exposed from the position of the hole groove 411 and squeezed against the cable car seat board. When the cable car shakes and causes the sampling box 2 to move, the friction rollers 44 on both sides of the movable splint 46 slide relative to the cable car seat board, causing the friction roller 44 to rotate. When the friction roller 44 rotates, the rotating teeth 413 on the same rotating rod 48 are driven to rotate through the transmission belt, causing a sliding tooth plate 414 on the movable splint 46 to move downward, thereby enhancing the mutual squeezing force between the squeezing block 47 and the cable car seat board, further preventing the sampling box 2 from sliding when the cable car shakes. A lightning rod is installed on the lower surface of the fixed splint 43 through the telescopic rod 412. The lightning rod is grounded through the lightning conductor 42, thereby improving the lightning protection effect of the sampling box 2. The lightning rod can be recovered by the contraction of the telescopic rod 412, thereby reducing the space occupied by the lightning rod, thereby facilitating the installation personnel to carry the sampling box 2.

[0034] The detection component includes a shaking detection module, a shaking analysis module and a shaking processing module;

[0035] The sway analysis module analyzes the ambient wind data near the cableway. ，m is the mass of the cable car, a is the acceleration ， is the air density, S is the surface area of ​​the cable car in contact with the wind, and V is the wind speed;

[0036] Cable car sway inclination data , the energy E required for the cable car to sway , cable car shaking frequency f , k is the stiffness coefficient of the cable car system;

[0037] As a vibration system, the dynamic response of the cable car can be described by the second-order differential equation:

[0038] ,

[0039] is the wind force that changes with time, c is the damping coefficient, and the external wind force can be calculated by the above formula: The tilt data generated by the cable car shaking , and the calculated inclination data With preset inclination data ,like If the cable car is shaking, it is determined that the cable car will shake, an anti-displacement clamping signal is generated, and the anti-displacement clamping signal is transmitted to the shaking processing module; otherwise, the cable car is determined to be stable;

[0040] The sway analysis module analyzes the impact strength data near the cableway and the impact force , and are the speed of the cable car before and after the impact, The time it takes for the speed to change;

[0041] Displacement of the cable car caused by impact , the inclination angle generated by the impact L is the distance from the cable car suspension point to the center of mass;

[0042] According to the impact force data detected The angle data that causes the cable car to tilt can be calculated , and the calculated inclination data With preset inclination data ,like If the cable car is shaking, it is determined that the cable car will shake, an anti-displacement clamping signal is generated, and the anti-displacement clamping signal is transmitted to the shaking processing module; otherwise, the cable car is determined to be stable;

[0043] If the wind and impact do not cause the cable car to exceed the preset inclination data If the cable car is tilted at an angle, the cable car speed data is compared and analyzed, and a binary coordinate system is established with the speed data and the acquisition time data as the xy axis. The coordinate points are plotted in the coordinate system, and adjacent coordinate points are connected. The slope of the connecting line is then Calculate if =0, the cable car is judged to be traveling at a constant speed; otherwise, the speed of the cable car is judged to have changed. If the cable car control system does not transmit any operating instructions, it is judged to be a non-control abnormality.

[0044] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An atmospheric particulate matter sampling device, comprising a sampling box (2), wherein support legs (1) are installed on both sides of the outer wall of the sampling box (2), characterized in that: Adjustment components are arranged on both sides of the outer wall of the sampling box (2) at positions corresponding to the support feet (1), a clamping component is arranged at a middle position of the rear surface of the sampling box (2), and a detection component is arranged inside the sampling box (2) at a position corresponding to the clamping component; The clamping assembly comprises a limiting rotating plate (41), the limiting rotating plate (41) is rotatably connected at a middle position of the rear surface of the sampling box (2), buckle seats are installed on the rear surface of the sampling box (2) in four directions corresponding to the limiting rotating plate (41) in the upper, lower, left and right directions, connecting buckles are arranged on both sides of the outer wall of the limiting rotating plate (41), a fixed clamping plate (43) is integrally formed on the side of the outer wall of the limiting rotating plate (41) away from the sampling box (2), a telescopic rod (412) is installed at a middle position of the lower surface of the fixed clamping plate (43), and a lightning wire (42) is arranged at one end of the telescopic rod (412). ), the outer wall of the limiting rotating plate (41) is provided with adjustment grooves (416) on both sides near the top of the fixed clamping plate (43), the outer wall of the limiting rotating plate (41) is slidably connected with a movable clamping plate (46) at a position corresponding to the adjustment groove (416), and a connecting slider is provided at a position corresponding to the adjustment groove (416) on the outer wall of the movable clamping plate (46), the upper surface of the limiting rotating plate (41) is integrally formed with a frame plate (45), and a clamping push rod is installed at a position corresponding to the frame plate (45) on the upper surface of the movable clamping plate (46), and the upper surface of the movable clamping plate (46) is provided with a clamping push rod. A fixed rod (415) is installed at a position between the two ends of the fixed rod (415), and both ends of the fixed rod (415) are rotatably connected to a rotating rod (48). The inner side of the rotating rod (48) is rotatably connected to a friction roller (44) via a rotating shaft. Holes (411) are opened at both sides of the upper surface of the movable clamping plate (46) at positions corresponding to the friction roller (44). A rubber sleeve is installed on the outer side wall of the friction roller (44), and the outer side of the rubber sleeve is in a convex tooth shape. A rotating seat (49) is installed on the upper surface of the two rotating rods (48). Support plates (410) are installed on both sides of the upper surface of the fixed rod (415). An electric push rod is rotatably connected to the outer wall of the plate (410) at a position corresponding to the rotating seat (49) through the rotating seat (49); a rotating tooth (413) is rotatably connected to the outer side of the fixed rod (415) at a connection position with the rotating rod (48); a sliding hole is opened on the upper surface of the movable splint (46) near the position of the rotating tooth (413); a sliding tooth plate (414) is slidably connected to the inner side of the sliding hole; an extrusion block (47) is integrally formed at the lower end of the sliding tooth plate (414); and an adjusting push rod is installed on the upper surface of the fixed rod (415) at a position corresponding to the sliding tooth plate (414).

2. The atmospheric particulate matter sampling device according to claim 1, characterized in that: The adjustment component comprises a lifting rail (31), and a group of lifting rails (31) are installed on both sides of the outer wall of the sampling box (2). A sliding plate is slidably connected to the inner side of the lifting rail (31), and a connecting buckle (32) is integrally formed at the outer wall of the sliding plate corresponding to the position of the supporting foot (1), and a limit card (33) is installed on the outer wall of the sliding plate near the upper side of the connecting buckle (32).

3. The atmospheric particulate matter sampling device according to claim 2, characterized in that: A hole is provided at the middle position of the outer wall of the limit card (33), a telescopic spring is installed inside the hole, and a plurality of evenly distributed slots are provided on the inner side of the lifting slide rail (31) at positions corresponding to the limit card (33).

4. The atmospheric particulate matter sampling device according to claim 1, characterized in that: The detection component includes a shaking detection module, a shaking analysis module and a shaking processing module; The sway detection module detects the cable car speed, the ambient wind force, the vibration caused by the external impact on the cable car, and the cable car sway amplitude, and transmits the detected cable car speed data, ambient wind force data, impact intensity data, and cable car inclination angle data to the sway analysis module for data processing; The sway analysis module analyzes the environmental wind force data, the impact strength data and the cable car speed data in turn to determine whether the cable car will be shaken. If it is determined that the cable car will be shaken, an anti-displacement clamping signal is generated and transmitted to the sway processing module; The sway processing module receives the anti-displacement clamping signal transmitted by the sway analysis module, and then controls the adjustment push rod connected to the sliding tooth plate (414) to extend, thereby pushing the extrusion block (47) to move downward to perform a clamping operation.

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