CN110836841A - Gantry crane type plant protection unmanned aerial vehicle fog drop test bench - Google Patents

Gantry crane type plant protection unmanned aerial vehicle fog drop test bench Download PDF

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Publication number
CN110836841A
CN110836841A CN201911193716.7A CN201911193716A CN110836841A CN 110836841 A CN110836841 A CN 110836841A CN 201911193716 A CN201911193716 A CN 201911193716A CN 110836841 A CN110836841 A CN 110836841A
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water collecting
aerial vehicle
unmanned aerial
guide wheel
fog drop
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CN110836841B (en
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李�赫
张开飞
张亚辉
牛潇潇
程上上
赵弋秋
尚增强
张志�
潘修欣
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Henan Agricultural University
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Henan Agricultural University
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    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials

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Abstract

The invention discloses a fog drop test stand for a gantry crane type plant protection unmanned aerial vehicle, which comprises a test stand, the unmanned aerial vehicle and a detection mechanism, wherein the test stand comprises slide way frames vertically arranged on two sides, a top beam, a cross beam and a base arranged between the two slide way frames, and a lifting mechanism is arranged between the cross beam and the slide way frames; the detection mechanism comprises a fog drop detection table, a track arranged on the base and a track wheel arranged at the bottom of the fog drop detection table; a plurality of parallel water collecting grooves are formed in the fog drop detection table, the water collecting grooves are in a downward concave arc shape and extend outwards to two sides of the track, and test tubes penetrate through the bottoms of the water collecting grooves; the test tube is internally provided with an upper baffle and a lower baffle which divide the test tube into a water collecting part at the upper part, an analysis part at the middle part and a waste liquid part at the lower part; go up baffle and lower baffle and all be provided with the baffle switch, it is wide to collect data range, can not have the collection droplet at dead angle, and test data is accurate, complete.

Description

Gantry crane type plant protection unmanned aerial vehicle fog drop test bench
The technical field is as follows:
the invention belongs to the field of agricultural aviation plant protection, and particularly relates to a fog drop test stand for a gantry crane type plant protection unmanned aerial vehicle.
Background art:
agricultural unmanned aerial vehicle model is various, operation object (crops) variety is various, the operation environment is complicated changeable, about the research in the aspect of rotor wind field to the distribution influence of droplet deposit, still will have huge exploration space and potentiality, can reach better operation effect for optimizing spraying operation parameter, and provide certain theoretical direction and data support.
When the plant protection unmanned aerial vehicle is researched and developed or identified, the existing mode is mainly to evaluate the spraying performance by using a field test, but the method has great uncertainty due to the fact that the field test has many variation factors such as wind direction, temperature, humidity, illumination and the like, the experimental result is easy to be interfered by weather, the data acquisition of the uniformity and the deposition of fog drops is easy to be influenced by manpower, the error is large, and the spraying performance cannot be accurately evaluated.
The existing device for detecting the fogdrop is also provided, for example, patent application No. 201711084031. X discloses a rapid detection device and a detection method suitable for spraying the fogdrop by an unmanned aerial vehicle, and the rapid detection device comprises a detection support, wherein a fogdrop detection system and an environment closing device are both arranged on the detection support, and the fogdrop detection system and the environment closing device are both in information interaction with a ground end; the detection support comprises a structural support frame consisting of a transverse support frame and a longitudinal support frame, the transverse support frame is of a rectangular structure, and the longitudinal support frames are arranged at four top corners of the transverse support frame; a middle detection guide rail is arranged in the middle of the transverse support frame and is positioned right above the sampling area, a plurality of traction sliding blocks are arranged on the middle detection guide rail, and a connection clamping position for connecting a fog drop detection system is arranged at the lower part of each traction sliding block; the traction sliding block is provided with a power source and a remote control unit, the remote control unit is in information interaction with the ground end, and the remote control unit controls the power source to work. Although the distribution condition of the fog drops can be roughly detected, the structure of the fog drop detector has defects, the detection result is inaccurate due to gaps in the detection of the fog drops, and the specific distribution condition of the fog drops cannot be truly simulated; therefore, the plant protection unmanned aerial vehicle fog drop test bench with accurate research test data is necessary.
The invention content is as follows:
aiming at the defects and problems of the existing equipment, the invention provides a fog drop test stand for a gantry crane type plant protection unmanned aerial vehicle, which effectively solves the problems that the experimental data in the existing equipment is inaccurate and the specific distribution of fog drops cannot be truly simulated.
The technical scheme adopted by the invention for solving the technical problems is as follows: a fog drop test stand for a gantry crane type plant protection unmanned aerial vehicle comprises a test stand frame, an unmanned aerial vehicle model and a detection system, wherein the test stand frame comprises upright posts vertically arranged on two sides, a top beam and a base arranged between the two upright posts, and a lifting cross beam is arranged below the top beam; the two ends of the lifting beam are in sliding fit with the upright columns on the two sides and are always kept horizontal, and the lifting beam can be locked on the upright columns on the two sides by locking wires arranged at the end parts of the lifting beam; the unmanned aerial vehicle model is arranged in the middle of the lifting cross beam, and a lifting mechanism for lifting or lowering the lifting cross beam is arranged between the lifting cross beam and the upright post; the detection system comprises a walking mechanism, a droplet detection table and a collection mechanism; a track is arranged on the base; the walking mechanism comprises a rail wheel which is matched with the rail and is arranged at the bottom of the fog drop detection table and a driving assembly for driving the rail wheel to transversely translate along the rail; travel marks are arranged on the track, and a detection unit for identifying the travel marks is arranged on the droplet detection table; the collecting mechanism comprises a water collecting tank group and a water collecting pipe group, the water collecting tank group comprises a whole formed by fixing a plurality of longitudinally arranged single water collecting tanks side by side, the tank bottom of each single water collecting tank is in a bucket shape, and a single water collecting pipe is fixed in an assembling hole formed in the bucket bottom in a sealing manner; an upper baffle and a lower baffle are arranged below the liquid inlet of the water collecting pipe to divide the water collecting pipe into a water collecting part at the upper part, an analysis part at the middle part and a waste liquid part at the lower part; the water collecting part is provided with a liquid inlet communicated with the hopper-shaped groove bottom; a liquid outlet is formed at the bottom of the waste liquid part; an upper electrode and a lower electrode are sequentially arranged in the water collecting part along the vertical direction; the upper partition plate and the lower partition plate are respectively provided with a partition plate switch, and the upper electrode, the lower electrode, the partition plate switches and the drive assembly control switch are controlled by a PLC and connected with an external PC end to form a control system of the fogdrop detection table.
Furthermore, the lifting mechanism comprises a driving hand wheel, a guide wheel set and a steel wire rope which are arranged on the outer side of the upright post; the two sides of the upright post are provided with slideways; two ends of the cross beam are nested in the slide ways in a matching manner, and a lock wire penetrates between the two ends; one end of the steel wire rope is fixed on the cross beam and winds on the driving hand wheel by bypassing the guide wheel set.
Further, the guide wheel set comprises a guide wheel A and a guide wheel B which are respectively arranged at the left side and the right side of the top beam, a guide wheel C arranged below the guide wheel A and a guide wheel D arranged at the left end of the cross beam; the fixed end of the steel wire rope is arranged below the guide wheel B, and the steel wire rope sequentially bypasses the guide wheel B, the guide wheel A, the guide wheel C and the guide wheel D.
Furthermore, the water collecting pipe is of a transparent tubular structure, and scale marks are arranged on the water collecting pipe.
Furthermore, the hopper-shaped groove bottom is positioned on the eccentric side of the water collecting groove, and the water collecting pipe obliquely penetrates through the groove bottom.
Further said travel marks are contacts; the detection unit is a touch panel, when the touch panel is in contact with the touch panel, the touch panel feeds back a signal to the PLC, and the PLC controls the fog drop detection platform to stop or continue to advance according to user selection.
Furthermore, a contact switch and an anti-collision sheet are arranged between the two sides of the fogdrop detection table and the upright post, and when the two sides of the fogdrop detection table are in contact with the upright post, the contact switch is triggered and the PLC controller controls the change and the steering of the stepping motor.
Further, the driving component is a stepping motor.
The invention has the beneficial effects that: the invention is provided with the portal frame as a test bed frame, the heights of the lifting beam and the unmanned aerial vehicle can be lifted or lowered through the lifting mechanism, the position of the bottom fog drop detection table is unchanged, the height of the bottom spray head of the unmanned aerial vehicle relative to the fog drop detection table is further changed, the distribution conditions of fog drops at different heights at the bottom of the spray head of the unmanned aerial vehicle can be simulated, the fog drop detection table can translate along the horizontal direction, the distribution conditions of fog drops at the same height and different angles at the bottom of the spray head of the unmanned aerial vehicle can be simulated by changing the position of the horizontal direction, the range of collected data is wide, the translation distance of the fog drop test table is controllable, fog drops can be collected without dead angles, and.
Meanwhile, a plurality of parallel water collecting grooves are formed in the fog drop test bed, a water collecting pipe is arranged in each water collecting groove, namely the fog drop test bed is divided into a plurality of parallel collecting units, the lower part of a spray head of the unmanned aerial vehicle can be accurately collected, the distribution situation of fog drops at each angle is controlled by the height of the unmanned aerial vehicle through the lifting mechanism, the distribution situation of the fog drops can be obtained in an all-dimensional and dead-angle-free mode, and the distribution situation data of the fog drops with accurate, complete and real test data are obtained.
The influence of factors such as different shower nozzle intervals of many rotors plant protection unmanned aerial vehicle and shower nozzle in the different intervals in rotor below to the droplet distribution is researched. The invention can be used for teaching and production units, has convenient assembly and movement, low cost, high test efficiency and convenient use, and the control system is controlled by a PC end and is remotely controlled, thereby having simple operation and huge economic and social benefits.
Description of the drawings:
fig. 1 is a perspective view of the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a side view of fig. 1.
Fig. 4 is a top view of fig. 1.
Fig. 5 is a perspective view of a droplet detection station.
Fig. 6 is a front view of fig. 5.
Fig. 7 is a rear view of fig. 5.
Fig. 8 is a top view of fig. 5.
Fig. 9 is a schematic view of the structure of the water collection tank.
Fig. 10 is a cross-sectional view of a header.
The reference numbers in the figures are: 1 is the stand, 2 is the back timber, 3 is the lifting beam, 4 is the base, 5 is the unmanned aerial vehicle model, 6 is the lock silk, 7 is driving hand wheel, 8 is the fog drop test table, 9 is the stiff end, 10 is the A guide pulley, 11 is the B guide pulley, 12 is the C guide pulley, 13 is the D guide pulley, 14 is the fog drop test table, 15 is the water catch bowl, 16 is the collector pipe, 17 is control panel, 18 is the landing leg, 19 is the baffle, 20 is lower baffle, 21 is the water catch bowl, 22 is the analysis portion, 23 is waste liquid portion, 24 is the bottom electrode, 25 is the top electrode, 26 is the upper baffle switch induction point.
The specific implementation mode is as follows:
the invention is further illustrated with reference to the following figures and examples.
Example 1: the embodiment aims at providing a fog drop test stand for a gantry crane type plant protection unmanned aerial vehicle, the existing detection mode is that the collection position is incomplete, a gap exists between collection water collecting pipes, the fog drop distribution condition at the bottom of a spray head of the unmanned aerial vehicle model cannot be completely simulated, the collection range is narrow, and test data are inaccurate, so that the embodiment provides the fog drop test stand for the gantry crane type plant protection unmanned aerial vehicle, and as shown in fig. 1, the device comprises a test stand, an unmanned aerial vehicle model 5 and a detection system; the test bench is portal frame form, including vertical setting at the stand 1 of both sides and top beam 2, lifting beam 3 and the base 4 of setting between coexistence post 1, unmanned aerial vehicle 5 passes through U-shaped bolt fixed mounting at lifting beam 3's middle part, is provided with elevating system between lifting beam 3 and the stand 1, can reciprocate lifting beam 3 promptly unmanned aerial vehicle model 5 along the both sides of stand 1 through elevating system, risees or reduces the height of lifting beam, and then changes unmanned aerial vehicle 5 for detecting system's height, simulates the droplet distribution condition of unmanned aerial vehicle model below under the different height.
Two ends of the lifting beam 3 are in sliding fit with the two side upright posts 1 and are always kept horizontal, and the two ends can be locked on the two side upright posts by locking wires arranged at the end parts of the lifting beam; the unmanned aerial vehicle model 5 is arranged in the middle of the lifting beam, and a lifting mechanism for lifting and descending the lifting beam is arranged between the lifting beam 3 and the upright post 1.
The detection system comprises a walking mechanism, a droplet detection table and a collection mechanism; a track is arranged on the base; the walking mechanism comprises a rail wheel which is matched with the rail and is arranged at the bottom of the fog drop detection table, and a driving assembly for driving the rail wheel to transversely translate along the rail.
The fog drop detection table is arranged on the base 4, the length of the track is 3200mm, the width of the track is 420mm, and the track wheels are nested in the track in a matching mode; the fog drop detection table 14 is internally provided with a stepping motor for driving a track wheel, the track wheel comprises a guide wheel and a driving wheel, the driving wheel is in transmission connection with a motor rotating shaft, the guide wheel is an inverted Y-shaped wheel, the guide wheel is clamped in the middle of a guide rail and drives the fog drop detection table to walk on the rail, and meanwhile, the motor is a stepping motor.
The collecting mechanism comprises a water collecting tank group and a water collecting pipe group, the water collecting tank group comprises a whole formed by fixing a plurality of longitudinally arranged single water collecting tanks side by side, the tank bottom of each single water collecting tank is in a bucket shape, and a single water collecting pipe is fixed in an assembling hole formed in the bucket bottom in a sealing manner; an upper baffle and a lower baffle are sequentially arranged below the liquid inlet of the water collecting pipe to divide the water collecting pipe into an upper water collecting part, a middle analysis part and a lower waste liquid part; the water collecting part is provided with a liquid inlet communicated with the hopper-shaped groove bottom; the bottom of the waste liquid part is provided with a liquid outlet.
A plurality of parallel partition plates are arranged in the fog drop detection table 14, the partition plates are arranged in parallel and have equal intervals, therefore, the fog drop detection table is internally divided into a plurality of parallel water collecting grooves 15, the width of each water collecting groove 15 is 100mm, the length of each water collecting groove 15 is 1520mm, the number of the water collecting grooves 15 is 9, the water collecting grooves 15 are used as a water collecting unit, used for collecting the fog drop distribution condition of the fog drop detection table 14 under an angle relative to the unmanned aerial vehicle nozzle, the water collecting groove 14 is in a downward concave arc shape and extends outwards from two sides of the track, the collecting range is wide, the collected fog drops can be automatically collected at the bottom of the groove, a water collecting pipe 16 is arranged at the bottom of the water collecting tank in a penetrating way, the fog drops collected at the bottom of the water collecting tank can flow into the water collecting pipe 16 through a liquid inlet, a supporting leg 18 is arranged at the side edge of the fog drop detecting platform, in order to strengthen the stability of the fogdrop detection table and prevent from toppling, the control panel 17 is fixed on the fogdrop detection table through a bracket.
For the convenience of analysis, an upper partition plate 19 and a lower partition plate 20 are provided in the header pipe 16, thereby dividing the header pipe into an upper header part 21, a middle analysis part 22 and a lower waste liquid part 23; the upper part of the water collecting part 21 is provided with a liquid inlet communicated with the bottom of the tank; a liquid outlet is formed at the bottom of the waste liquid part 23; the upper partition plate 19 and the lower partition plate 20 are both provided with partition plate switches, and the partition plate switches have multiple setting forms, wherein one of the setting forms is as follows: the baffle switch comprises a turning plate, a rotating shaft and a control unit for controlling the rotating shaft to rotate, the turning plate can be controlled to turn over after the control unit receives a signal, the upper baffle plate 19 and the lower baffle plate 20 are opened, and the control unit can be a stepping motor and the like; an upper electrode and a lower electrode are sequentially arranged in the water collecting part along the vertical direction; the upper electrode 24, the lower electrode 25, the partition switch and the drive assembly control switch are connected with an external PC end through PLC control to form a control system of the fog drop detection table.
The bottom of the water collecting part is provided with a lower electrode 24 positioned at the lower part and an upper electrode 25 positioned at the upper part, an electrode plastic pipe is arranged in the water collecting part of each water collecting pipe, used for detecting the water level condition, when the water in the water collecting pipe is increased, the water can act on the lower electrode 24, the lower electrode 24 sends a signal to start time measurement, when the water level reaches the position of the upper electrode 25 of the water collecting pipe, the time measurement is stopped, when the upper baffle switch sensing point 26 detects that the collector pipe is full, the upper baffle will open, allowing water to flow into the analysis section, meanwhile, the PLC controls the stepping electrode to move the droplet detection platform to the next detection position, the filling time measured by each detection point is stored in the memory card, the droplets are firstly collected in the water collection tank, then the water is led into an analysis part of the water collecting pipe, and the mist can be accurately measured by using the measuring time between the upper electrode and the lower electrode in the water collecting part.
In the water collecting tank, the fog drops are collected into fog liquid, the fog liquid enters the water collecting pipe 16 from a liquid inlet above the water collecting part 21, after being collected for a certain time, the upper partition plate 19 is opened through the controller, the fog liquid flows into the analysis part 22 for analysis, and after the analysis is finished, the lower partition plate 20 is opened, and the fog liquid flows into the waste liquid part and is discharged or stored.
Travel marks are arranged on the track, and a detection unit for identifying the travel marks is arranged on the droplet detection table; the stroke mark is a contact point, the detection unit is a touch plate arranged on the fog drop detection platform, when the contact point is in contact with the touch plate, the touch plate feeds back a signal to the PLC, and the PLC controls the fog drop detection platform to stop or continue to advance according to user selection.
Every 800mm installation contact on the track, the bottom that the platform was examined to the droplet is provided with the touch panel, and contact and touch panel have constituted travel switch, contact the back from contact and touch panel, through PLC controller control droplet examine test table stop, can detect the droplet distribution condition of locating unmanned aerial vehicle below certain height 3200 by 1520 within a definite time through 4 detections to can be to the not dead angle of the different angles of unmanned aerial vehicle shower nozzle measure.
Example 2: this example is substantially the same as example 1, except that: the present embodiment further defines the lifting device.
As shown in fig. 1, the lifting mechanism comprises a driving hand wheel 7 arranged on the outer side of the upright column, a guide wheel group and a steel wire rope; the two sides of the upright post are provided with slideways which are L-shaped channel steel and used for limiting the lifting beam; the driving hand wheel 7 is used for fixing the outer side of the upright post 1, the upright post is a hollow frame, and two sides of the upright post are provided with slideways; two ends of the lifting beam 3 are nested in the slide ways in a matching manner, a lock wire 6 penetrates through the side surface of the lifting beam, and the lock wire 6 can penetrate through the lifting beam and the upright post; one end of the steel wire rope is fixed on the lifting beam, and winds on the driving hand wheel 7 after passing through the guide wheel set.
The guide wheel set comprises a guide wheel A10 and a guide wheel B11 which are respectively arranged at the left side and the right side of the top beam, a guide wheel C12 arranged below the guide wheel A10 and a guide wheel D13 arranged at the left end of the lifting cross beam; the fixed end 9 of the steel wire rope is arranged below the B guide wheel 11, one end of the steel wire rope is fixed at the fixed end 9, and sequentially bypasses the B guide wheel 11, the A guide wheel 10, the C guide wheel 12 and the D guide wheel 14 (the steel wire rope bypasses the C guide wheel, penetrates through a hollow area of the upright post and then winds on the D guide wheel), and winds on the driving hand wheel 7, so that the lifting cross beam can be lifted from the fixed end of the lifting cross beam and the C guide wheel through the driving hand wheel, the structure is stable, the two-point lifting is realized, and the unmanned aerial vehicle cannot deviate in the.
Example 3: this example is substantially the same as example 1, except that: the present embodiment further defines the shape of the water collection sump.
Water catch bowl 15 be concave arc shape, concave arc's tank bottom is located the eccentric side of water catch bowl, and collector pipe 16 runs through the tank bottom along vertical direction, makes the collector pipe be located orbital front side, just the collector pipe is transparent tubular structure, and is provided with the scale mark, makes things convenient for the operator to observe, change and simple to operate, rational in infrastructure.
Meanwhile, in order to ensure the sealing effect, a water stop pad is sleeved at the splicing part of the water collecting pipe and the bottom of the tank, so that the collected fog drops are prevented from overflowing to influence the experimental result.
Example 4: this example is substantially the same as example 1, except that: contact switches and anti-collision pieces are arranged between the two sides of the fog drop detection platform 14 and the upright post 1.
The anti-collision pieces are arranged on two sides of the fogdrop detection table, can bear the collision between the fogdrop detection table and the stand column, and when the fogdrop detection table is contacted with the stand column, the contact switch is triggered and the PLC controller controls the change and the steering of the stepping motor, so that the reciprocating motion of the fogdrop detection table can be realized without human interference, and the operation is simple.
The contact switch is formed by a contact and a contact plate, and the description is not repeated.

Claims (8)

1. The utility model provides a gantry crane formula plant protection unmanned aerial vehicle droplet test bench which characterized in that: the test bench comprises stand columns vertically arranged on two sides, a top beam and a base, wherein the top beam and the base are arranged between the two stand columns; the two ends of the lifting beam are in sliding fit with the upright columns on the two sides and are always kept horizontal, and the lifting beam can be locked on the upright columns on the two sides by locking wires arranged at the end parts of the lifting beam; the unmanned aerial vehicle model is arranged in the middle of the lifting cross beam, and a lifting mechanism for lifting or lowering the lifting cross beam is arranged between the lifting cross beam and the upright post; the detection system comprises a walking mechanism, a droplet detection table and a collection mechanism; a track is arranged on the base; the walking mechanism comprises a rail wheel which is matched with the rail and is arranged at the bottom of the fog drop detection table and a driving assembly for driving the rail wheel to transversely translate along the rail; travel marks are arranged on the track, and a detection unit for identifying the travel marks is arranged on the droplet detection table; the collecting mechanism comprises a water collecting tank group and a water collecting pipe group, the water collecting tank group comprises a whole formed by fixing a plurality of longitudinally arranged single water collecting tanks side by side, the tank bottom of each single water collecting tank is in a bucket shape, and a single water collecting pipe is fixed in an assembling hole formed in the bucket bottom in a sealing manner; an upper baffle and a lower baffle are arranged below the liquid inlet of the water collecting pipe to divide the water collecting pipe into a water collecting part at the upper part, an analysis part at the middle part and a waste liquid part at the lower part; the water collecting part is provided with a liquid inlet communicated with the hopper-shaped groove bottom; a liquid outlet is formed at the bottom of the waste liquid part; an upper electrode and a lower electrode are sequentially arranged in the water collecting part along the vertical direction; the upper partition plate and the lower partition plate are respectively provided with a partition plate switch, and the upper electrode, the lower electrode, the partition plate switches and the drive assembly control switch are controlled by a PLC and connected with an external PC end to form a control system of the fogdrop detection table.
2. The gantry crane type plant protection unmanned aerial vehicle fog drop test bench of claim 1, characterized in that: the lifting mechanism comprises a driving hand wheel, a guide wheel group and a steel wire rope which are arranged on the outer side of the upright post; the two sides of the upright post are provided with slideways; two ends of the cross beam are nested in the slide ways in a matching manner, and a lock wire penetrates between the two ends; one end of the steel wire rope is fixed on the cross beam and winds on the driving hand wheel by bypassing the guide wheel set.
3. The gantry crane type plant protection unmanned aerial vehicle fog drop test bench of claim 2, characterized in that: the guide wheel set comprises a guide wheel A and a guide wheel B which are respectively arranged at the left side and the right side of the top beam, a guide wheel C arranged below the guide wheel A and a guide wheel D arranged at the left end of the cross beam; the fixed end of the steel wire rope is arranged below the guide wheel B, and the steel wire rope sequentially bypasses the guide wheel B, the guide wheel A, the guide wheel C and the guide wheel D.
4. The gantry crane type plant protection unmanned aerial vehicle fog drop test bench of claim 1, characterized in that: the test tube is transparent tubular structure, and is provided with the scale mark on the test tube.
5. The gantry crane type plant protection unmanned aerial vehicle fog drop test bench of claim 1, characterized in that: the hopper-shaped groove bottom is positioned on the eccentric side of the water collecting groove, and the water collecting pipe obliquely penetrates through the groove bottom.
6. The gantry crane type plant protection unmanned aerial vehicle fog drop test bench of claim 1, characterized in that: the travel mark is a contact; the detection unit is a touch panel, when the touch panel is in contact with the touch panel, the touch panel feeds back a signal to the PLC, and the PLC controls the fog drop detection platform to stop or continue to advance according to user selection.
7. The gantry crane type plant protection unmanned aerial vehicle fog drop test bench of claim 1, characterized in that: contact switch and anti-collision piece are arranged between the two sides of the fogdrop detection table and the upright post, and when the two sides of the fogdrop detection table are contacted with the upright post, the contact switch is triggered and the PLC controller controls the change and the steering of the stepping motor.
8. The gantry crane type plant protection unmanned aerial vehicle fog drop test bench of claim 1, characterized in that: the driving component is a stepping motor.
CN201911193716.7A 2019-11-28 2019-11-28 Gantry crane type plant protection unmanned aerial vehicle fog drop test bench Active CN110836841B (en)

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CN113686737A (en) * 2021-08-02 2021-11-23 江苏大学镇江流体工程装备技术研究院 Test bed for testing water drops of spray particle analyzer

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