CN113815890B - Snow making machine for airplane test - Google Patents
Snow making machine for airplane test Download PDFInfo
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- CN113815890B CN113815890B CN202111408566.4A CN202111408566A CN113815890B CN 113815890 B CN113815890 B CN 113815890B CN 202111408566 A CN202111408566 A CN 202111408566A CN 113815890 B CN113815890 B CN 113815890B
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- air duct
- snow making
- making machine
- snow
- mounting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C3/00—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow
- F25C3/04—Processes or apparatus specially adapted for producing ice or snow for winter sports or similar recreational purposes, e.g. for sporting installations; Producing artificial snow for sledging or ski trails; Producing artificial snow
Abstract
The invention discloses a snow making machine for an airplane test, which relates to the technical field of airplane testing and comprises a snow making mechanism, a pitching mechanism, a swinging mechanism and a control cabinet, wherein the automatic adjustment of the pitching angle of the snow making machine is realized through an electric push rod and a first angular displacement sensor, the pitching angle control precision is high, the automatic adjustment of the swinging angle of the snow making machine is realized through installing a motor, a rotary support, an electromagnetic clutch and a second angular displacement sensor, the swinging angle control precision is high, and the adjustment is convenient; the electrical control system of the snow maker is integrally designed with each structure and mechanism, so that the snow maker is higher in integration degree; by providing a plurality of mounting holes in the water nozzle, the amount of water droplets ejected can be increased, thereby increasing the amount of snow produced and improving the uniformity of snow fall.
Description
Technical Field
The invention relates to the technical field of airplane testing, in particular to a snow making machine for airplane testing.
Background
At present, in the process of aircraft development and test, the adaptability of an aircraft system snowing environment is tested and checked through an outfield test in China, but the environmental condition of the outfield test is uncontrollable, so that a lot of problems and challenges are brought to the operation of test guarantee equipment, test monitoring and measuring equipment and testers, various difficulties in the outfield test are avoided, the snowing environmental condition is guaranteed to be met, and the aircraft snowing test can be carried out in a laboratory.
The airplane snowfall test in the airplane climate laboratory simulates a snowfall environment in an artificial snowfall mode, is not limited by regions and seasons, and is more convenient and efficient compared with a test by utilizing natural snowfall; airplane snowfall tests have strict requirements on the uniformity of snowfall, so that a snowmaker which can uniformly form snow in a laboratory is required for a climate laboratory snowfall test, and the snowmaker is movable so as to conveniently adjust a snowing area in the climate laboratory.
Similar snowmaking machine schemes in the market at present are as follows: the patent application with publication number CN208595736U discloses a snow making machine, which utilizes an atomizing nozzle and an ice source nozzle in a snow making barrel to cooperate with a fan to realize snow making, and realizes the adjustment of the pitching angle of the snow making barrel through a hydraulic rod connected with the snow making barrel; the pitching angle of the snow making barrel of the snow making machine is adjusted by manually adjusting the vertical working state of the hydraulic rod, the pitching angle is difficult to adjust rapidly, and the control precision is low; the snow making cylinder can not swing left and right, the formed snow is concentrated in front of the snow making cylinder, and uniform snowfall can not be simulated; the nozzle and the pipeline are easy to be frozen and blocked without anti-freezing measures, so that the development of the test is influenced; the patent application with publication number CN208595736U discloses a cannon formula snow machine, the support frame that will make the snow portion rotates through a rotating device and installs on walking frame, can be according to the use needs with making the snow portion level rotate corresponding angle and locking, this cannon formula snow machine's rotating device is pure mechanical structure, can only manually adjust the rotation of making the snow portion, on the one hand turned angle is difficult to the accurate control, on the other hand can not realize making the stable round trip of rotation of snow portion in the snow process, also can't control the homogeneity of snowing, this snow machine also does not have the antifreeze measure, nozzle and pipeline freeze stifled easily appear, influence experimental development.
The scheme in the prior art can not automatically and accurately control the pitching angle and the swinging angle of the snow making barrel or the snow making part of the snow making machine, is difficult to control the uniformity of snowfall, can not meet the requirements of a snowfall test, lacks of anti-freezing measures, can be used for a long time at low temperature in a laboratory, and is easy to freeze and block a nozzle and a matched pipeline, thereby influencing the test process.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the snow making machine for the airplane test can form a uniform snowing environment and support the development of the airplane snowing test in a climate laboratory.
A snow making machine for aircraft tests comprises a snow making mechanism, a pitching mechanism, a swinging mechanism and a control cabinet;
the snow making mechanism comprises an air duct, an air duct support, a jet ring, a water pump and an air compressor, wherein the air duct support is internally provided with an axial flow fan, the air duct support is positioned at the lower end of the air duct and is connected with the side wall of the air duct through a first rotating shaft, the jet ring is arranged at an air outlet of the air duct and is provided with a plurality of rows of nozzles along the circumferential direction of the inner wall of the air duct, the water pump and the air compressor are used for respectively supplying water and supplying air to the nozzles, the blowing speed of the air duct is controlled by adjusting the frequency of the axial flow fan, so that the snow spraying distance is adjusted, a rotating fulcrum is selected at the gravity center position of the air duct to ensure that the air duct cannot be subjected to unbalance loading during rotation, a chassis shield is positioned at the lower end of the air duct and is used for mounting the water pump and the air compressor, and the bottom end of the chassis shield is rotatably connected with a three-point wheel type moving trolley;
the pitching mechanism comprises a first angular displacement sensor arranged at the joint of the first rotating shaft and the air duct, and an electric push rod, one end of the electric push rod is fixed on the air duct bracket, and the other end of the electric push rod is fixed on the air duct;
the swing mechanism comprises a rotary supporting structure arranged at the joint of the chassis shield and the moving trolley, an installation motor arranged on the air duct support and driving the air duct support to rotate through the rotary supporting structure, and a second angular displacement sensor arranged at the center of the rotary supporting structure and fixedly connected with the support for installing the motor through a bent plate, wherein a rotor of the installation motor is connected with the moving trolley through a coupling and a connecting shaft;
the control cabinet is installed on the air duct bracket and is used for controlling the pitch angle and the swing angle parameters of the snow making machine.
According to one aspect of the invention, a heating ring is arranged between two adjacent rows of nozzles to prevent the nozzles from being frozen and blocked to influence normal use.
According to one aspect of the invention, the temperature sensor, the electric tracing band and the PTC constant temperature heater are arranged inside the chassis shield and used for adjusting the temperature inside the chassis shield, so that the water pump, the air compressor and the swing mechanism are prevented from being failed due to too low temperature, and the reliability of the device is improved.
According to one aspect of the invention, a PLC controller, a frequency converter, a control switch and a PTC constant temperature heater are integrated in the control cabinet, the control cabinet is communicated with a laboratory master control system through an industrial Ethernet, the remote control of the snow making machine is realized, the overall electrification degree is improved, the faults of electrical equipment in the control cabinet caused by low temperature can be prevented through the PTC constant temperature heater, the normal operation of the device is ensured, and the PLC controller controls the stroke of the electric push rod according to the pitch angle to realize the accurate adjustment of the pitch angle.
According to one aspect of the invention, the pitching angle of the pitching mechanism is 10-80 degrees, the swinging angle of the swinging mechanism is-90 degrees, the swinging frequency is 2 times/min, and the control precision of the pitching angle and the swinging angle can be improved and the snow falling uniformity can be increased by controlling the pitching angle and the swinging angle within a reasonable range.
According to one aspect of the invention, a gear, an inner ring gear which is fixed on a moving trolley and is meshed with the gear, an outer ring gear which is fixed on an air duct bracket and is meshed with the inner ring gear, an output shaft which is arranged at the upper end of the gear and is connected with a rotating shaft of a mounting motor through a flange shaft sleeve, an electromagnetic clutch which is fixed on the output shaft, and an armature which is fixed on the gear and is opposite to the electromagnetic clutch are arranged in the rotary supporting structure, when the electromagnetic clutch is electrified, the armature and the gear are attracted together, so that the gear is driven to rotate around the output shaft, the gear is meshed with the inner ring gear, the outer ring gear further drives the air duct bracket to rotate, and the swing of the snow making machine is realized; when the electromagnetic clutch is powered off, the armature is disconnected from the electromagnetic clutch, the gear cannot rotate, the swing angle of the snow making machine cannot be automatically controlled, and the swing of the snow making machine can be realized by manually rotating the air duct support at the moment.
According to one aspect of the invention, the nozzle comprises a connecting seat, a water outlet nozzle which is arranged in the connecting seat and connected with a water pump, a nuclear air spray head which is arranged in the connecting seat and uniformly distributed at two sides of the water outlet nozzle, wherein the nuclear air spray head is connected with an air compressor, the water outlet nozzle comprises an arc-shaped mounting shell, a plurality of sliding gathering frames and a plurality of opening and closing shielding sheets, the arc-shaped mounting shell is provided with a plurality of mounting holes, the radius of the mounting rings is sequentially reduced, the mounting holes are uniformly arranged on the outer wall of the arc-shaped mounting shell, the sliding gathering frames are horizontally arranged in the arc-shaped mounting shell and are in one-to-one correspondence with the mounting rings, one side of each sliding gathering frame is hinged with the outer wall of the arc-shaped mounting shell, the inner walls of the opening and closing shielding sheets are provided with sliding grooves, each sliding gathering frame comprises a reinforcing ring and a plurality of sliding rods which are uniformly arranged on the outer wall of the reinforcing ring along the circumferential direction and are respectively connected with the mounting holes on the same mounting ring in a sliding way through sliding blocks, when the water pump rushes out high pressure water stream through the arc installation shell, water pressure can strike and drive whole slip set frame and produce the removal, at this moment, slider on each slide bar can remove to the circular arc direction of arc installation shell along the spout, at this moment, each cover piece that opens and shuts is opened, the water droplet can be followed each mounting hole blowout and met with nuclear gas shower nozzle spun high-pressure gas, form snow under the condition of cold air, through set up a plurality of mounting holes on every water outlet nozzle, the blowout volume of multiplicable water droplet, thereby increase the volume of making snow, improve the homogeneity of snowing, and simultaneously, owing to the setting of the cover piece that opens and shuts, can avoid not using the time, the water outlet nozzle takes place to block up, influence the normal use of device.
According to one aspect of the invention, one end of the opening and closing shielding piece is hinged with the outer wall of the arc-shaped mounting shell, a folding net piece is arranged between the other end of the opening and closing shielding piece and the arc-shaped mounting shell, when the opening and closing shielding piece is impacted and opened by water flow, the folding net piece in the folding state is opened, water drops impact the folding net piece and are scattered into smaller liquid drops, and therefore the snow condensation speed is improved.
According to one aspect of the invention, the size of the opening and closing shielding piece is matched with that of the mounting hole, so that the mounting hole is completely shielded, and an anti-blocking effect is achieved.
The working process of the snow making machine is as follows:
(1) the control process of the automatic pitching comprises the following steps: setting a pitching angle on a control cabinet or a remote control system, starting a pitching function of the snow making machine, feeding the pitching angle back to a PLC (programmable logic controller) in the control cabinet by a first angular displacement sensor, controlling the electric push rod to stretch according to the deviation between the fed-back pitching angle and the set pitching angle by the PLC, and extending the electric push rod when the current pitching angle of the snow making machine is smaller than the set pitching angle until the set pitching angle is reached; when the current pitching angle of the snow making machine is larger than the set pitching angle, the electric push rod retracts until the set pitching angle is reached;
(2) the control process of automatic swing comprises the following steps: setting a swing angle range on a control cabinet or a remote control system, starting an automatic swing function of the snow making machine, enabling the mounting motor to start to rotate forwards, enabling the snow making machine to swing towards a positive angle direction from an initial position, wherein the initial position is that the swing angle is 0 degrees, enabling a second angular displacement sensor to feed back the swing angle to a PLC (programmable logic controller) in the control cabinet, and controlling the forward and reverse rotation of the mounting motor according to the deviation of the fed-back swing angle and the set maximum positive swing angle by the PLC; when the current swing angle of the snow making machine is smaller than the set maximum positive swing angle, the motor is installed to continuously rotate positively, and the snow making machine continues to swing towards the positive angle direction; when the current swing angle of the snow making machine reaches the set maximum positive swing angle, the mounting motor starts to rotate reversely, the snow making machine starts to swing towards the negative angle direction, and the snow making machine starts to swing towards the positive direction again after the current swing angle reaches the set maximum negative swing angle, and the process is circulated so as to realize the continuous swing of the snow making machine.
Compared with the prior art, the invention has the beneficial effects that:
1. the automatic adjustment of the pitching angle of the snow making machine is realized through the electric push rod and the first angular displacement sensor, the control precision of the pitching angle is high, and the adjustment is convenient;
2. the automatic adjustment of the swing angle of the snow making machine is realized by installing the motor, the rotary support, the electromagnetic clutch and the second angular displacement sensor, the control precision of the swing angle is high, and the adjustment is convenient;
3. the pitching angle of the snow making machine can be automatically adjusted within 10-80 degrees, the swinging angle can be automatically and manually adjusted within-90 degrees, and the adjustable ranges of the pitching angle and the swinging angle are large;
4. the electrical control system of the snow maker is integrally designed with each structure and mechanism, so that the snow maker is higher in integration degree;
5. the snow maker can be locally controlled by a control cabinet, and can also be remotely controlled by an industrial Ethernet;
6. the snow making machine has an antifreezing function and can be used at the lowest temperature of-25 ℃;
7. by providing a plurality of mounting holes in the water nozzle, the amount of water droplets ejected can be increased, thereby increasing the amount of snow produced and improving the uniformity of snow fall.
Drawings
FIG. 1 is a schematic view of the overall structure of the snow making machine of the present invention;
FIG. 2 is a right side view of the snow making machine of the present invention;
FIG. 3 is an enlarged view of A in FIG. 2;
FIG. 4 is a front view of the swing mechanism of the snow making machine of the present invention;
FIG. 5 is a top plan view of the swing mechanism of the snow making machine of the present invention;
FIG. 6 is a cross-sectional view A-A of FIG. 4;
FIG. 7 is a cross-sectional view of a nozzle of the present invention;
FIG. 8 is a schematic structural view of the water outlet nozzle of the present invention;
fig. 9 is an installation view of the sliding assembly frame of the present invention in the interior of an arc-shaped installation shell.
Wherein, 1-snow making mechanism, 11-wind barrel, 111-first rotating shaft, 12-wind barrel bracket, 13-jet ring, 131-nozzle, 132-heating ring, 133-connecting seat, 134-water outlet nozzle, 135-nuclear air nozzle, 136-arc mounting shell, 1361-mounting ring, 1362-mounting hole, 1363-opening and closing shade, 1364-sliding chute, 1365-folding net sheet, 137-sliding integrated frame, 1371-reinforcing ring, 1372-sliding block, 1373-sliding rod, 14-water pump, 15-air compressor, 2-pitching mechanism, 21-first angular displacement sensor, 22-electric push rod, 3-swinging mechanism, 31-rotary supporting structure, 311-gear, 312-inner ring gear, 313-outer ring gear, 314-output shaft, 315-electromagnetic clutch, 316-armature, 32-installation motor, 33-second angular displacement sensor, 331-bending plate, 34-coupler, 35-connecting shaft, 4-control cabinet, 5-chassis shield and 6-moving trolley.
Detailed Description
The embodiments of the present invention will be explained in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a snow making machine for aircraft testing comprises a snow making mechanism 1, a pitching mechanism 2, a swinging mechanism 3 and a control cabinet 4;
the snow making mechanism 1 comprises an air duct 11 internally provided with an axial flow fan, an air duct support 12 which is positioned at the lower end of the air duct 11 and is connected with the side wall of the air duct 11 through a first rotating shaft 111, a jet flow ring 13 which is positioned at an air outlet of the air duct 11 and is provided with five rows of nozzles 131 along the circumferential direction of the inner wall of the air duct 11, a water pump 14 and an air compressor 15 which respectively supply water and supply air to the nozzles 131, as shown in fig. 3, a heating ring 132 is arranged between two adjacent rows of nozzles 131 to prevent the nozzles 131 from being frozen and blocked and influence normal use, the blowing speed of the air duct 11 is controlled by adjusting the frequency of the axial flow fan, so that the adjustment of the snow spraying distance is realized, a rotating support point is selected at the gravity center position of the air duct 11 to ensure that the air duct 11 cannot be subjected to unbalance loading during rotation, a chassis shield 5 which is positioned at the lower end of the air duct 11 and is used for installing the water pump 14 and the air compressor 15, and the bottom end of the chassis shield 5 is rotatably connected with a three-point wheel type moving trolley 6; a temperature sensor, an electric tracing band and a PTC constant temperature heater are arranged inside the chassis shield 5 and used for adjusting the temperature inside the chassis shield 5, so that the water pump 14, the air compressor 15 and the swing mechanism 3 are prevented from being failed due to too low temperature, and the reliability of the device is improved;
as shown in fig. 7, the nozzle 131 includes a connecting seat 133, a water outlet nozzle 134 disposed in the connecting seat 133 and connected to the water pump 14, and a nuclear air nozzle 135 disposed in the connecting seat 133 and distributed on both sides of the water outlet nozzle 134, the nuclear air nozzle 135 is connected to the air compressor 15, as shown in fig. 8 and 9, the water outlet nozzle 134 includes an arc-shaped mounting shell 136 having an outer wall sequentially provided with three mounting rings 1361 having sequentially reduced radii and each mounting ring 1361 being uniformly provided with eight mounting holes 1362, three sliding aggregation frames 137 horizontally disposed in the arc-shaped mounting shell 136 and corresponding to the mounting rings 1361 one by one, twenty-four opening/closing shields 1363 corresponding to the mounting holes 1362 one by one and having one side hinged to the outer wall of the arc-shaped mounting shell 136, an inner wall of the opening/closing shield 1363 is provided with a sliding slot 1364, each sliding aggregation frame 137 includes a reinforcing ring 1371, twenty-four sliding rods 1373 uniformly disposed on the outer wall of the reinforcing ring 1371 along the circumferential direction and slidably connected to the mounting holes 1362 on the same mounting ring 1361 through sliding blocks 1372, when the water pump 14 flushes high-pressure water out of the arc-shaped mounting shell 136, the water pressure can impact and drive the whole sliding collecting frame 137 to move, at the moment, the sliding blocks 1372 on the sliding rods 1373 can move towards the arc direction of the arc-shaped mounting shell 136 along the sliding grooves 1364, at the moment, the opening and closing shielding sheets 1363 are opened, water drops can be sprayed out of the mounting holes 1362 and meet high-pressure gas sprayed out of the nuclear gas spray head 135, snow is formed under the condition of cold air, the spraying amount of the water drops can be increased by arranging twenty-four mounting holes 1362 on each water outlet nozzle 134, so that the snow making amount is increased, the snow falling uniformity is improved, and meanwhile, due to the arrangement of the opening and closing shielding sheets 1363, the water outlet nozzles 134 can be prevented from being blocked when the water is not used, and the normal use of the device is prevented from being influenced;
as shown in fig. 7, one end of the shutter mask 1363 is hinged to the outer wall of the arc-shaped mounting shell 136, and a folding net 1355 is arranged between the other end of the shutter mask 1363 and the arc-shaped mounting shell 136, when the shutter mask 1363 is impacted and opened by water flow, the folding net 1355 in the folded state is opened, and water drops impact the folding net 1355 and are scattered into smaller drops, so that the snow-condensing speed is increased;
the size of the opening and closing shielding piece 1363 is matched with that of the mounting hole 1362, so that the mounting hole 1362 is completely shielded, and an anti-blocking effect is achieved;
the pitching mechanism 2 comprises a first angular displacement sensor 21 arranged at the joint of the first rotating shaft 111 and the air duct 11 and an electric push rod 22, wherein one end of the electric push rod is fixed on the air duct bracket 12, and the other end of the electric push rod is fixed on the air duct 11, and the first angular displacement sensor 21 can measure the pitching angle of the air duct 11 in real time;
as shown in fig. 4, 5, and 6, the swing mechanism 3 includes a rotary support structure 31 disposed at a connection position of the chassis shield 5 and the moving cart 6, an installation motor 32 disposed on the air duct support 12 and driving the air duct support 12 to rotate through the rotary support structure 31, a second angular displacement sensor 33 installed at a center of the rotary support structure 31 and fixedly connected with a support on which the motor 32 is installed through a bent plate 331, and a rotor on which the motor 32 is installed is connected with the moving cart 6 through a coupling 34 and a connecting shaft 35;
as shown in fig. 6, a gear 311, an inner ring gear 312 fixed on the moving trolley 6 and engaged with the gear 311, an outer ring gear 313 fixed on the air duct bracket 12 and engaged with the inner ring gear 312, an output shaft 314 arranged at the upper end of the gear 311 and connected with a rotating shaft 321 of the mounting motor 32 through a flange shaft sleeve, an electromagnetic clutch 315 fixed on the output shaft 314, and an armature 316 fixed on the gear 311 at a position opposite to the electromagnetic clutch 315, wherein when the electromagnetic clutch 315 is energized, the armature 316 is attracted together, so that the gear 311 is driven to rotate around the output shaft 314, the gear 311 and the inner ring gear 312 are engaged to move, the outer ring gear 313 drives the air duct bracket 12 to rotate, and swing of the snow making machine is realized; when the electromagnetic clutch 315 is powered off, the armature 316 is disconnected from the electromagnetic clutch 315, the gear 311 cannot rotate, the swing angle of the snow making machine cannot be automatically controlled, and at the moment, the swing of the snow making machine can be realized by manually rotating the air duct bracket 12;
the control cabinet 4 is installed on the air duct bracket 12 and used for controlling parameters of a pitching angle and a swinging angle of the snow making machine, a PLC (programmable logic controller), a frequency converter, a control switch and a PTC (positive temperature coefficient) constant temperature heater are integrated in the control cabinet 4, the control cabinet 4 is communicated with a laboratory master control system through an industrial Ethernet, the remote control of the snow making machine is realized, the integral electrification degree is improved, the faults of each electrical device in the control cabinet caused by low temperature can be prevented through the PTC constant temperature heater, the normal operation of the device is ensured, the PLC controls the stroke of the electric push rod 22 according to the pitching angle, and the precise adjustment of the pitching angle is realized;
the pitching angle of the pitching mechanism 2 is 10-80 degrees, the swinging angle of the swinging mechanism 3 is-90 degrees, the swinging frequency is 2 times/min, and the pitching angle and the swinging angle are controlled within a reasonable range, so that the control accuracy of the pitching angle and the swinging angle can be improved, and the snow falling uniformity is improved.
The working process of the snow making machine is as follows:
(1) the control process of the automatic pitching comprises the following steps: setting a pitching angle on the control cabinet 4 or a remote control system, starting a pitching function of the snow making machine, feeding back the pitching angle to a PLC (programmable logic controller) in the control cabinet 4 by the first angular displacement sensor 21, controlling the electric push rod 22 to stretch according to the deviation between the fed-back pitching angle and the set pitching angle by the PLC, and extending the electric push rod 22 until the set pitching angle is reached when the current pitching angle of the snow making machine is smaller than the set pitching angle; when the current pitch angle of the snow making machine is larger than the set pitch angle, the electric push rod 22 retracts until the set pitch angle is reached;
the control process of automatic swing comprises the following steps: setting a swing angle range on the control cabinet 4 or a remote control system, starting an automatic swing function of the snow making machine, enabling the mounting motor 32 to rotate forwards, enabling the snow making machine to swing from an initial position to a positive angle direction, enabling the initial position to be a swing angle of 0 degree, enabling the second angular displacement sensor 33 to feed back the swing angle to a PLC controller in the control cabinet 4, and controlling the mounting motor 32 to rotate forwards and backwards according to the deviation of the fed-back swing angle and the set maximum positive swing angle by the PLC controller; when the current swing angle of the snow making machine is smaller than the set maximum positive swing angle, the motor 32 is installed to continuously rotate positively, and the snow making machine continues to swing towards the positive angle direction; when the current swing angle of the snow making machine reaches the set maximum positive swing angle, the mounting motor 32 starts to rotate reversely, the snow making machine starts to swing towards the negative angle direction, and starts to swing towards the positive direction again after reaching the set maximum negative swing angle, and the process is circulated so as to realize the continuous swing of the snow making machine.
Claims (5)
1. A snow making machine for aircraft tests is characterized by comprising a snow making mechanism (1), a pitching mechanism (2), a swinging mechanism (3) and a control cabinet (4);
the snow making mechanism (1) comprises an air duct (11) internally provided with an axial flow fan, an air duct support (12) which is positioned at the lower end of the air duct (11) and is connected with the side wall of the air duct (11) through a first rotating shaft (111), a jet flow ring (13) which is arranged at an air outlet of the air duct (11) and is provided with a plurality of rows of nozzles (131) along the circumferential direction of the inner wall of the air duct (11), a water pump (14) and an air compressor (15) which respectively supply water and air to the nozzles (131), and a chassis shield (5) which is positioned at the lower end of the air duct (11) and is used for mounting the water pump (14) and the air compressor (15), wherein the bottom end of the chassis shield (5) is rotatably connected with a three-point wheel type mobile trolley (6);
the pitching mechanism (2) comprises a first angular displacement sensor (21) arranged at the joint of the first rotating shaft (111) and the air duct (11), and an electric push rod (22) with one end fixed on the air duct bracket (12) and the other end fixed on the air duct (11);
the swing mechanism (3) comprises a rotary supporting structure (31) arranged at the joint of the chassis shield (5) and the mobile trolley (6), a mounting motor (32) arranged on the air duct support (12) and driving the air duct support (12) to rotate through the rotary supporting structure (31), and a second angular displacement sensor (33) arranged at the center of the rotary supporting structure (31) and fixedly connected with the support for mounting the motor (32) through a bent plate (331), wherein a rotor of the mounting motor (32) is connected with the mobile trolley (6) through a coupler (34) and a connecting shaft (35);
the control cabinet (4) is arranged on the air duct bracket (12) and is used for controlling the parameters of the pitching angle and the swinging angle of the snow making machine;
a gear (311), an inner ring gear (312) which is fixed on a moving trolley (6) and is meshed with the gear (311), an outer ring gear (313) which is fixed on an air duct support (12) and is meshed with the inner ring gear (312), an output shaft (314) which is arranged at the upper end of the gear (311) and is connected with a rotating shaft (321) of a mounting motor (32) through a flange shaft sleeve, an electromagnetic clutch (315) which is fixed on the output shaft (314), and an armature (316) which is fixed on the gear (311) and is opposite to the electromagnetic clutch (315) are arranged in the rotary supporting structure (31);
the nozzle (131) comprises a connecting seat (133), a water outlet nozzle (134) which is arranged in the connecting seat (133) and connected with a water pump (14), and a core gas spray head (135) which is arranged in the connecting seat (133) and uniformly distributed on two sides of the water outlet nozzle (134), wherein the core gas spray head (135) is connected with an air compressor (15), the water outlet nozzle (134) comprises a plurality of mounting rings (1361) with sequentially reduced radiuses on the outer wall, an arc-shaped mounting shell (136) with a plurality of mounting holes (1362) uniformly arranged on each mounting ring (1361), a plurality of sliding integrated frames (137) which are horizontally arranged in the arc-shaped mounting shell (136) and correspond to the mounting rings (1361) one by one, and a plurality of opening and closing shielding sheets (1363) which are hinged with the outer wall of the arc-shaped mounting shell (136) on one side and correspond to the mounting holes (1362), and a chute (1364) is arranged on the inner wall of the opening and closing shielding sheets (1363), each sliding collecting frame (137) comprises a reinforcing ring (1371), and a plurality of sliding rods (1373) which are uniformly arranged on the outer wall of the reinforcing ring (1371) along the circumferential direction and are respectively connected with mounting holes (1362) on the same mounting ring (1361) in a sliding mode through sliding blocks (1372);
one end of the opening and closing shielding piece (1363) is hinged with the outer wall of the arc-shaped mounting shell (136), and a folding net piece (1365) is arranged between the other end of the opening and closing shielding piece and the arc-shaped mounting shell (136);
the size of the opening and closing shielding piece (1363) is matched with that of the mounting hole (1362).
2. A snow making machine for aircraft testing as claimed in claim 1, wherein: a heating ring (132) is arranged between two adjacent rows of nozzles (131).
3. A snow making machine for aircraft testing as claimed in claim 1, wherein: and a temperature sensor, an electric tracing band and a PTC constant temperature heater are arranged in the chassis shield (5).
4. A snow making machine for aircraft testing as claimed in claim 1, wherein: the control cabinet (4) is internally integrated with a PLC controller, a frequency converter, a control switch and a PTC constant temperature heater, and the control cabinet (4) is communicated with a laboratory master control system through an industrial Ethernet.
5. The snow making machine for the aircraft test as claimed in claim 1, wherein the pitch angle of the pitching mechanism (2) is 10 ° to 80 °, the swing angle of the swing mechanism (3) is-90 ° to 90 °, and the swing frequency is 2 times/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111408566.4A CN113815890B (en) | 2021-11-25 | 2021-11-25 | Snow making machine for airplane test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111408566.4A CN113815890B (en) | 2021-11-25 | 2021-11-25 | Snow making machine for airplane test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113815890A CN113815890A (en) | 2021-12-21 |
| CN113815890B true CN113815890B (en) | 2022-02-08 |
Family
ID=78918258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113280547B (en) * | 2021-06-02 | 2022-07-01 | 姜何 | Snow maker control system |
| CN114251887B (en) * | 2022-01-14 | 2023-03-14 | 中国飞机强度研究所 | Snow making machine and application thereof in airplane test |
| CN114251888B (en) * | 2022-01-14 | 2023-03-21 | 中国飞机强度研究所 | Snowmaker for simulating snowfall in airplane test and snowfall simulation method |
| CN115031459B (en) * | 2022-07-26 | 2023-04-18 | 西安交通大学 | Snow making machine capable of adjusting collision position and control method |
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| CN207585164U (en) * | 2017-10-24 | 2018-07-06 | 北京宾度明德滑雪设备有限公司 | Snowmaker with elevation angle regulatory function |
| CN212746987U (en) * | 2020-07-09 | 2021-03-19 | 铭星冰雪(天津)科技有限公司 | Snow maker injection device |
| CN113358007A (en) * | 2021-08-11 | 2021-09-07 | 中国飞机强度研究所 | Device and method for measuring deformation of body in airplane laboratory climate test |
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| JP3361485B2 (en) * | 1999-08-04 | 2003-01-07 | 広洋工業株式会社 | Method and apparatus for making and throwing artificial snow |
| CN200979322Y (en) * | 2006-12-04 | 2007-11-21 | 李晓明 | Snow manufacturing machine |
| CN208595736U (en) * | 2018-07-06 | 2019-03-12 | 河南晋安机械科技有限公司 | A kind of snowmaker |
| CN210146259U (en) * | 2019-06-03 | 2020-03-17 | 深圳华棠景观事务所有限公司 | Prevent blockking up fountain nozzle |
| CN210832651U (en) * | 2020-02-26 | 2020-06-23 | 三亚千古情旅游演艺有限公司 | Snow making device for ice and snow amusement park |
| CN212962324U (en) * | 2020-07-03 | 2021-04-13 | 铭星冰雪(天津)科技有限公司 | Cannon type snow maker |
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| CN207585164U (en) * | 2017-10-24 | 2018-07-06 | 北京宾度明德滑雪设备有限公司 | Snowmaker with elevation angle regulatory function |
| CN212746987U (en) * | 2020-07-09 | 2021-03-19 | 铭星冰雪(天津)科技有限公司 | Snow maker injection device |
| CN113358007A (en) * | 2021-08-11 | 2021-09-07 | 中国飞机强度研究所 | Device and method for measuring deformation of body in airplane laboratory climate test |
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