CN110274823B - Airport runway test flight experimental device - Google Patents
Airport runway test flight experimental device Download PDFInfo
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- CN110274823B CN110274823B CN201910574910.3A CN201910574910A CN110274823B CN 110274823 B CN110274823 B CN 110274823B CN 201910574910 A CN201910574910 A CN 201910574910A CN 110274823 B CN110274823 B CN 110274823B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0026—Combination of several types of applied forces
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
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- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0244—Tests performed "in situ" or after "in situ" use
- G01N2203/0246—Special simulation of "in situ" conditions, scale models or dummies
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- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
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- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/263—Surfaces
- G01N2291/2632—Surfaces flat
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Abstract
The invention relates to an experimental device for test flight of an airport runway, which effectively solves the problems that the pressure on the runway surface can not be changed and the damage to the runway surface can not be monitored in real time in the walking process of the existing device; the technical scheme for solving the problem is that the device comprises a bottom plate, wherein three wheel sets are arranged on the bottom plate, and a bearing platform is fixed at the upper end of the bottom plate; the three wheel sets all comprise wheel carriers, the lower end of each wheel carrier is provided with an electric wheel, each wheel carrier is provided with a wheel carrier rack, a wheel carrier transfer gear is meshed beside each wheel carrier rack, one side of each wheel set is provided with a wheel carrier driving shaft and a wheel carrier double-head screw, two ends of each wheel carrier double-head screw are provided with wheel carrier gear seats, each wheel carrier gear seat is provided with a wheel carrier driving gear, each wheel carrier driving gear on each wheel carrier double-head screw can be meshed with a wheel carrier transfer gear in the wheel set, the other side of each wheel set is provided with a clamping device, and the three clamping devices are all connected with the corresponding wheel carrier driving shaft; the invention can better simulate the pressure change of the landing of the airplane on the runway surface and has strong practicability.
Description
Technical Field
The invention relates to the technical field of airport runway test tools, in particular to an airport runway test flight experimental device.
Background
An airfield runway is a long strip-shaped area on an airport for aircraft to take off or land. Wherein the runway surface is divided into rigid and non-rigid runway surfaces. The rigid road surface is made of concrete, can bear the load of an airplane on a large area, has strong bearing capacity, and is used in common medium-sized or above air ports. Almost all civil airport runways in China belong to the same category.
The strength of the pavement in the rigid pavement is also a critical parameter. For example, for an AirCraft with a takeoff weight of more than 5700 kg, in order to accurately represent the relationship between the tire pressure of the AirCraft on the ground and the strength of the runway, the international civil aviation organization specifies that the AirCraft can take off and land on the specified runway by using the AirCraft class Number-ACN and the runway class Number Pavement class Number-PCN methods.
The PCN number is obtained by the property of the pavement and the bearing strength of the pavement foundation through technical evaluation, and each runway has a PCN value. The ACN number is calculated by the aircraft manufacturer from the actual weight of the aircraft, the internal pressure of the landing gear tires, the contact area of the tires with the ground, the wheel spacing of the main landing gear, and other parameters. The ACN number and the gross weight of the aircraft have only indirect relation, for example, the ACN number of the B747 aircraft is 55 due to the main landing gear with 16 wheels for bearing weight, the ACN number of the B707 aircraft is 49, and the gross weight of the B747 aircraft is only 2/5, but the ACNs are not different. When calculated using this method, this type of aircraft can use this runway without restriction when the ACN value is less than the PCN value. In some special cases, the ACN value may be used for runways that are 5% to less than 10% greater than the PCN value, but this may lead to a reduction in the service life of the runway.
Therefore, in order to ensure the service life of the road surface and the safety of the airplane taking off and landing, the final simulation pressure detection after the corresponding road surface is delivered is very important. In the simulation detection, because the pressure on the road surface of the airplane changes along with the sliding of the airplane in the process of the sliding takeoff of the airplane, the detection equipment in the simulation detection needs to be capable of simulating the process of the pressure change. However, in the existing detection device, there is no detection device which can walk, detect and change its own weight during walking at the same time.
Therefore, the invention provides an experimental device for the pilot flight of an airport runway to solve the problem.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides an airport runway test flight experimental device, which effectively solves the problems that the pressure on a runway surface can not be changed and the damage to the runway surface can not be monitored in real time in the walking process of the prior device.
The wheel set comprises a bottom plate, wherein a wheel set is arranged on the left side of the bottom plate, two wheel sets are arranged on the front side and the rear side of the right side of the bottom plate side by side, and a bearing platform is fixedly connected to the upper end of the bottom plate;
the three wheel sets comprise a plurality of wheel frames which are connected on the bottom plate in a vertical sliding manner, the lower end of each wheel frame is rotatably connected with an electric wheel, one side of each wheel frame is fixedly connected with a wheel frame rack, a wheel frame transfer gear is meshed beside each wheel frame rack, one side of each wheel set is rotatably connected with a wheel frame driving shaft and a wheel frame double-headed screw rod, two ends of each wheel frame double-headed screw rod are respectively sleeved with a wheel frame gear seat in a threaded manner, each wheel frame gear seat is rotatably connected with a wheel frame driving gear, the wheel frame driving gear is sleeved on the wheel frame driving shaft in a front-back sliding manner and can rotate along with the rotation of the wheel frame driving shaft, each wheel frame driving gear on the three wheel frame double-headed screw rods can be meshed with the wheel frame transfer gear in the wheel set, and the other, the three clamping devices are connected with corresponding wheel carrier driving shafts through belts;
the bottom plate on fixedly connected with battery, a plurality of electronic round all with the battery electricity connect, the bottom plate lower extreme rotate and be connected with the meter step wheel, the meter step wheel pass through transmission structure and three wheel carrier double-thread screw, three the wheel carrier drive shaft all link to each other.
Preferably, one side of each wheel carrier is provided with two clamping grooves which are respectively called an upper clamping groove and a lower clamping groove;
the clamping device comprises a clamping driving shaft and a clamping double-head screw which are rotatably connected to one side of a corresponding wheel set, clamping gear seats are sleeved at two ends of the clamping double-head screw in a threaded engagement manner, clamping gears are rotatably connected to the clamping gear seats, the clamping gears are sleeved on the clamping driving shaft in a front-back sliding manner and can rotate along with the rotation of the clamping driving shaft, and the clamping driving shaft and the clamping double-head screw are both connected with corresponding wheel carrier driving shafts;
the clamping device further comprises clamping blocks which are connected to one side of each wheel carrier in a sliding mode, each clamping block can be matched with the corresponding upper clamping groove and the corresponding lower clamping groove, one side of each clamping block is fixedly connected with a high rack which can be meshed with the clamping gear, a low rack is fixedly connected to the same side of each clamping block and the high rack, the upper end of each low rack is meshed with an idler wheel which is rotatably connected to the base, and each idler wheel can be meshed with the clamping gear.
Preferably, one side of the clamping block is connected with a side push plate in a left-right sliding manner, and the side push plate is connected with the clamping block through a spring;
the fixture block top be provided with the round head card post of sliding connection on the base from top to bottom, round head card post upper end link to each other with the base through the spring.
Preferably, the upper side and the lower side of one side of the upper clamping groove and the lower clamping groove, which is far away from the wheel carrier, are provided with inclined planes, and the clamping blocks and the high racks are provided with inclined planes at the same side.
Preferably, the wheel carrier driving shaft is coaxially and fixedly connected with a clamping driving belt pulley, the clamping driving shaft is coaxially and fixedly connected with a clamping driven belt pulley, and the clamping driving belt pulley is connected with the corresponding clamping driven belt pulley through a belt;
the coaxial fixedly connected with chucking drive gear of chucking drive shaft, the coaxial fixedly connected with of chucking double-end screw rod and the chucking driven gear of corresponding chucking drive gear meshing.
Preferably, the step counting wheel is coaxially and fixedly connected with a step counting driving belt pulley, and the step counting driving belt pulley is connected with a step counting wheel driven belt pulley which is rotatably connected to the bottom plate through a belt;
the transmission structure comprises a central driving gear coaxially and fixedly connected with the step counting wheel driven belt pulley, two central driven gears are meshed with two sides of the central driving gear, and the two central gears are coaxially and fixedly connected with a plurality of central belt pulleys;
the transmission structure further comprises a wheel carrier driving shaft belt pulley which is fixedly connected with the wheel carrier driving shaft in a coaxial mode, the wheel carrier double-thread screw rod belt pulley is fixedly connected with the wheel carrier double-thread screw rod in a coaxial mode, and the wheel carrier driving shaft belt pulley and the wheel carrier double-thread screw rod belt pulley are connected with an adjacent central belt pulley belt through belt pulleys respectively.
Preferably, a central control module is fixedly connected to the bottom plate, the central control module is electrically connected to the storage battery, the plurality of electric wheels are electrically connected to the central control module, a contact sensor is fixedly connected to the upper end of each wheel carrier, each contact sensor is electrically connected to the central control module, a remote signal transceiver unit is integrated in the central control module, the remote signal transceiver unit can receive a remote control signal, an ultrasonic probe is fixedly connected to the lower end of the bottom plate, and the ultrasonic probe is electrically connected to the central control module.
Preferably, the front end and the rear end of the right side of the bottom plate are fixedly connected with two infrared distance measuring instruments, and the two infrared distance measuring instruments are connected with the central control module.
The invention makes improvement aiming at the problem that the pressure on the road surface can not be changed and the damage of the road surface can not be monitored in real time in the walking process of the existing device, the pressure on the road surface of the device is changed by changing the number of wheels which are contacted with the road surface in the walking process of the device, so that the simulation of the pressure change on the road surface in the airplane taking-off and landing process is realized, and the counting wheels which synchronously rotate along with the counting wheels are adopted as the trigger device of the wheel number control structure of the device, so that the effect of weight change can be better achieved, and meanwhile, the whole device is more stable and difficult to damage by adopting mechanical structure triggering.
Drawings
FIG. 1 is a schematic front view of the present invention.
Fig. 2 is a perspective view of the present invention.
FIG. 3 is a first perspective view of the load-removing table according to the present invention.
FIG. 4 is a schematic perspective view of a second load-removing table according to the present invention.
Fig. 5 is a first perspective view of a control structure of a front wheel set according to the present invention.
Fig. 6 is a schematic perspective view of a control structure of a front wheel set according to the present invention.
Fig. 7 is a three-dimensional schematic view of a control structure of a front wheel set according to the present invention.
Fig. 8 is a partially sectional schematic view of a front wheel set control structure according to the present invention.
Fig. 9 is a schematic front view of a fixture block and related structures thereof according to the present invention.
Fig. 10 is a perspective view of a fixture block and related structures thereof according to the present invention.
Fig. 11 is a perspective view of the wheel frame and the related structure thereof.
Fig. 12 is a perspective view of the double-threaded screw of the wheel carrier of the present invention.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 12. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The first embodiment of the invention relates to an experimental device for the test flight of an airport runway, which is characterized by comprising a bottom plate 1, the bottom plate 1 is used for providing a fixed foundation for a subsequent structure, the left side of the bottom plate 1 is provided with one wheel set 2, the front side and the rear side of the right side are provided with two wheel sets 2 side by side, the three wheel sets 2 ensure that the device can stably run on an airport runway, meanwhile, the three wheel sets 2 provide driving force for the device, the upper end of the bottom plate 1 is fixedly connected with a bearing platform 3, the bearing platform 3 is used for placing a balance weight, so that the weight of the device is the same as that of a full-load airplane, the specific weight of the counter weight can be determined according to the grade of the runway, referring to figure 2, four corners of a bearing platform 3 are fixedly connected with auxiliary fixing columns, the counter weights are used for assisting in fixing the counter weights on the bearing table 3, and a user can tie up binding bands on the four auxiliary fixing columns so as to fix the counter weights on the weighing table better;
the three wheel sets 2 respectively comprise a plurality of wheel frames 4 which are vertically and slidably connected on the bottom plate 1, the wheel frames 4 are used for providing a fixed foundation for the electric wheels 5, the lower end of each wheel frame 4 is rotatably connected with one electric wheel 5, the electric wheels 5 are used for driving the device to walk on an airport runway, one side of each wheel frame 4 is fixedly connected with a wheel frame rack 6, a wheel frame transfer gear 7 is meshed beside each wheel frame rack 6, the transfer gear rotates to drive the corresponding wheel frame 4 to lift through the adjacent meshed wheel frame racks 6, one side of each three wheel set 2 is rotatably connected with a wheel frame driving shaft 8 and a wheel frame double-head screw 9, referring to figures 3 and 5, the wheel frame driving shaft 8 is positioned between the wheel set 2 and the wheel frame double-head screw 9, and the two ends of the three wheel frame double-head screw 9 are respectively sleeved with a wheel frame gear seat 10 in, that is, the double-headed screw 9 of the wheel frame can drive the two wheel frame gear seats 10 engaged with the double-headed screw 9 to move close to or away from each other, each wheel frame gear seat 10 is rotatably connected with a wheel frame driving gear 11, the wheel frame driving gear 11 is sleeved on the wheel frame driving shaft 8 in a front-back sliding manner and can rotate along with the wheel frame driving shaft 8, specifically, referring to fig. 8, the wheel frame driving gear 11 is rotatably connected with a rotating shaft of the wheel frame gear seat 10 and coaxially provided with a wheel frame 4 through hole, and is sleeved on the corresponding wheel frame driving shaft 8 through the wheel frame 4 through hole, in order to ensure that the wheel frame driving shaft 8 can drive the corresponding wheel frame driving gear 11 to rotate, the side wall of each wheel frame driving shaft 8 is uniformly and fixedly connected with a wheel frame 4 sliding key, the inner wall of the wheel frame 4 through hole of each wheel frame driving gear 11 is uniformly provided with a wheel, the wheel carrier driving shaft 8 is rotated to drive the corresponding wheel carrier driving gear 11 to rotate, meanwhile, the wheel carrier driving gear 11 can slide on the wheel carrier driving shaft 8, each wheel carrier driving gear 11 on the three wheel carrier double-head screws 9 can be meshed with the wheel carrier transfer gear 7 in the wheel set 2, namely, the following effects can be achieved when the wheel carrier double-head screws 9 and the wheel carrier driving shaft 8 synchronously rotate: the two wheel carrier driving gears 11 approach each other along with the synchronous movement of the wheel carrier gear seat 10 and are meshed with the wheel carrier transfer gears 7 in sequence in the process, and simultaneously the two wheel carrier driving gears 11 rotate synchronously and drive the meshed wheel carrier transfer gears 7 to rotate, so that the corresponding wheel carriers 4 are lifted;
the other sides of the three wheel sets 2 are respectively provided with a clamping device, the three clamping devices are connected with the corresponding wheel carrier driving shaft 8 through a belt, namely the wheel carrier driving shaft 8 rotates to drive the corresponding clamping devices to work, the clamping devices are mainly used for clamping the corresponding wheel carriers 4, and in the walking process of the device, the wheel carriers 4 and the electric wheels 5 need to be stressed and support the bottom plate 1, and the wheel carriers 4 can not effectively support the bottom plate 1 due to the fact that the wheel carriers 4 slide up and down on the bottom plate 1, so that the clamping devices need to be arranged, the wheel carriers 4 and the bottom plate 1 are fixedly connected into a whole when the wheel carriers 4 do not move, and the supporting effect on the bottom plate 1 is achieved;
In the second embodiment, on the basis of the first embodiment, two clamping grooves, namely an upper clamping groove 14 and a lower clamping groove 15, are formed in one side of each wheel frame 4, and the specific structure of the clamping groove is as shown in fig. 11, wherein the two clamping grooves on the same wheel frame 4 are distributed vertically, have the same depth and height, and are only different in position;
the clamping device comprises a clamping driving shaft 16 and a clamping double-threaded screw 17 which are rotatably connected to one side of the corresponding wheel set 2, and referring to fig. 7, the clamping driving shaft 16 is positioned between the corresponding clamping double-threaded screw 17 and the wheel set 2, the two ends of the clamping double-threaded screw 17 are respectively provided with a clamping gear seat 18 in a threaded engagement sleeve, namely, the clamping double-threaded screw 17 can drive the clamping gear seats 18 engaged with the clamping double-threaded screw to mutually approach or separate, the clamping gear seats 18 are rotatably connected with clamping gears 19, the clamping gears 19 are slidably sleeved on the clamping driving shaft 16 in a front-back sliding manner and can rotate along with the rotation of the clamping driving shaft 16, concretely, referring to fig. 8, the clamping gears 19 are rotatably connected on rotating shafts of the clamping gear seats 18 and coaxially provided with clamping through holes, and are sleeved on the corresponding clamping driving shaft 16 through the clamping through holes, so as to ensure that the rotation of the clamping driving shaft, every the equal even a plurality of chucking sliding keys of fixedly connected with of chucking drive shaft 16 lateral wall, every the chucking through-hole inner wall of chucking drive gear 28 equal even offer a plurality of and corresponding chucking driving shaft 16 on the chucking sliding key complex chucking sliding tray, make chucking drive shaft 16 rotate and to drive corresponding chucking gear 19 and rotate, chucking gear 19 can slide on chucking drive shaft 16 simultaneously, chucking drive shaft 16 and chucking double-end screw 17 all link to each other with corresponding wheel carrier drive shaft 8, promptly wheel carrier drive shaft 8 rotate and to drive corresponding chucking drive shaft 16 and card machine double-end screw and rotate to reach the following effect: the two clamping gears 19 approach each other along with the synchronous movement of the clamping gear seat 18, and simultaneously the two clamping gears 19 synchronously rotate;
the clamping device further comprises a clamping block 20 connected to one side of each wheel frame 4 in a left-right sliding manner, the clamping block 20 can be matched with the corresponding upper clamping groove 14 and the corresponding lower clamping groove 15, namely the clamping block 20 can be inserted into the upper clamping groove 14 or the lower clamping groove 15 of the corresponding wheel frame 4, so that the corresponding wheel frame 4 can be fixedly connected with the base plate 1 into a whole to support the base plate 1, in an initial position, the clamping block 20 is positioned in the upper clamping groove 14, one side of each clamping block 20 is fixedly connected with a high rack 21 capable of being meshed with the clamping gear 19, the same side of each clamping block 20 and the high rack 21 is also fixedly connected with a low rack 22, the upper end of each low rack 22 is meshed with an idle gear 23 rotatably connected to the base, each idle gear 23 can be meshed with the clamping gear 19, namely in the process that the two clamping gears 19 approach each other, the clamping gear 19 is firstly meshed with the high rack 21 of the clamping block 20 to pull the clamping block 20 out of the upper clamping groove 14, then the clamping gear 19 is meshed with the high rack 21 and can be meshed with the idle gear 23 to drive the low rack 22 to move and push the clamping block 20 into the lower clamping groove 15, when the clamping device is used specifically, the wheel carrier driving shaft 8 rotates to drive the corresponding clamping driving shaft 16 and the clamping double-headed screw 17 to rotate, so that the two clamping gears 19 move close to each other along with the synchronous movement of the clamping gear seat 18, the two clamping gears 19 rotate synchronously, before the wheel carrier driving gear 11 is meshed with the wheel carrier transfer gear 7, the high rack 21 on the clamping block 20 on the other side of the corresponding wheel carrier 4 is firstly meshed with the corresponding clamping gear 19, the clamping block 20 is pulled out of the upper clamping groove 14 of the corresponding wheel carrier 4 under the action of the clamping gear 19 and the high rack 21, and at the same time, the driving gear 11 on one side of the same wheel carrier 4 is meshed with the wheel The rack 6 drives the corresponding wheel frame 4 to rise, then the wheel frame driving gear 11 and the wheel frame transfer gear 7 are disengaged, meanwhile, the clamping gear 19 and the idle gear 23 on the other side of the same wheel frame 4 are engaged, and the lower rack 22 is used for fixing the fixture block 20 corresponding to the lower clamping groove 15 of the wheel frame 4, so that the wheel frame 4 and the bottom plate 1 are fixed again, and at the moment, the electric wheel 5 on the lower end of the corresponding wheel frame 4 is not contacted with the ground any more.
In the third embodiment, on the basis of the second embodiment, a process is required for the wheel frame transfer gear 7 to lift the corresponding wheel frame 4 through the wheel frame rack 6, and the clamping gear 19 and the high rack 21 on the other side of the same wheel frame 4 are directly meshed with the idle gear 23 after being disengaged, so as to drive the fixture block 20 to return to the original position, in order to prevent the fixture block 20 from failing to return to the original position due to the fact that the wheel frame 4 does not rise to a required position in the process, and therefore the device fails, the embodiment provides a time delay device, so that the fixture block 20 can return to the original position after the lower fixture slot 15 rises and is clamped into the lower fixture slot 15, specifically, one side of the fixture block 20 is connected with the side push plate 24 in a left-right sliding manner, and the side push plate 24 is connected with the fixture;
the upper end of each clamping block 20 is provided with a door frame fixedly connected to the floor, the clamping block 20 passes through the lower end of the door frame, and the corresponding round-head clamping column 25 is connected to the lower end of the beam of the door frame in an up-and-down sliding manner, it should be noted that the round head of the round-head clamping column 25 faces downwards, and the lower end of the round-head clamping column 25 is lower than the lower end surface of the beam of the door frame at the initial position, so that the round-head clamping column 25 can clamp the side push plate 24 of the corresponding clamping block 20, referring to fig. 8, when the present embodiment is used specifically, the clamping gear 19 is engaged with the idle gear 23, the clamping block 20 is driven to return to the original position by the low rack 22, and in the process, the low rack 22 moves towards the direction close to the wheel carrier 4 to drive the corresponding clamping block 20 to move in the same direction, because of the reason of the round head snap-on 25, the side push pedal 24 of the corresponding snap-on 20 is snapped on, the corresponding spring is compressed gradually under the condition of the continuous motion of the low rack 22, the thrust borne by the side push pedal 24 is increased gradually under the action of the spring, and the corresponding round head snap-on 25 is jacked up when the thrust reaches the maximum, so that the corresponding snap-on 20 returns to the original position and enters the corresponding lower snap-on groove 15, and at the moment, under the action of the spring and the automation, the round head snap-on 25 returns to the original position again.
In the fourth embodiment, on the basis of the third embodiment, referring to fig. 11, the upper and lower sides of the upper and lower locking grooves 14 and 15 far away from the wheel frame 4 are provided with inclined surfaces, the purpose of the inclined surface is that at the moment when the wheel carrier driving gear 11 and the wheel carrier transfer gear 7 are disengaged, the wheel carrier 4 will slide downwards under the action of its own weight, the inclined surface can prevent the fixture block 20 or the side push plate 24 from being dislocated and unable to enter in the process of entering the upper clamping groove 14 or the lower clamping groove 15, the stability of the device is improved, the clamping block 20 and the high rack 21 are provided with inclined surfaces on the same side, referring to fig. 9, the inclined surface is mainly used for preventing the corresponding round-head clamping column 25 from influencing the movement of the clamping block 20 when the clamping gear 19 is meshed with the high rack 21 and the clamping block 20 is pulled out of the upper clamping groove 14 or the lower clamping groove 15.
Fifth embodiment, on the basis of the second embodiment, the second embodiment provides a specific structure in which the truck driving shaft 8 drives the chucking driving shaft 16 and the chucking double-headed screw 17 to rotate, specifically, the truck driving shaft 8 is coaxially and fixedly connected with the chucking driving pulley 26, the chucking driving shaft 16 is coaxially and fixedly connected with the chucking driven pulley 27, the chucking driving pulley 26 is connected with the corresponding chucking driven pulley 27 through a belt, that is, the truck driving shaft 8 rotates to drive the chucking driving shaft 16 to synchronously rotate through the chucking driving pulley 26, the chucking driven pulley 27 and the belt;
the coaxial fixedly connected with chucking drive gear 28 of chucking drive shaft 16, the coaxial fixedly connected with of chucking double-end screw 17 and the chucking driven gear 29 of corresponding chucking drive gear 28 meshing, promptly chucking drive shaft 16 rotate and to drive coaxial fixed connection's chucking drive gear 28 and rotate to chucking driven gear 29 through side meshing drives corresponding chucking double-end screw 17 and rotates.
Sixth embodiment, on the basis of the first embodiment, the present embodiment provides a specific structure of a transmission structure, such that the step-counting wheel 13 rotates to drive the related structures on both sides of the three wheel sets 2 to work, specifically, the step-counting wheel 13 is coaxially and fixedly connected with a step-counting driving pulley 30, the step-counting driving pulley 30 is belt-connected with a driven pulley of the step-counting wheel 13 rotatably connected to the bottom plate 1, that is, the step-counting wheel 13 can rotate by driving the step-counting driven pulley 31 to rotate through the step-counting driving pulley 30 and the belt;
the transmission structure comprises a central driving gear 32 coaxially and fixedly connected with the driven belt pulley of the step counting wheel 13, two central driven gears 33 are meshed with two sides of the central driving gear 32, and the two central gears are coaxially and fixedly connected with a plurality of central belt pulleys 34. concretely, referring to fig. 3, the driven belt pulley of the step counting wheel 13 rotates to drive the central driving gear 32 coaxially and fixedly connected to rotate synchronously, so as to drive the central driven gears 33 meshed with two sides to rotate, and further drive the central belt pulleys 34 coaxially and fixedly connected with the two central driven gears 33 to rotate;
the transmission structure still include with wheel carrier drive shaft pulley 35 of the coaxial fixed connection of wheel carrier drive shaft 8, the coaxial fixedly connected with wheel carrier double-thread screw belt pulley 36 of wheel carrier double-thread screw 9, wheel carrier drive shaft pulley 35 and wheel carrier double-thread screw belt pulley 36 link to each other with adjacent center pulley 34 belt through the belt pulley respectively, promptly the meter step wheel 13 rotate through meter step wheel 13 drive belt pulley, meter step wheel 13 driven pulley, center drive gear 32, center driven gear 33, a plurality of center pulley 34 and belt drive corresponding wheel carrier drive shaft pulley 35 and wheel carrier double-thread screw belt pulley 36 and rotate to drive corresponding wheel carrier drive shaft 8 and wheel carrier double-thread screw 9 and rotate.
Seventh embodiment, on the basis of the first embodiment, a central control module 37 is fixedly connected to the base plate 1, the central control module 37 is electrically connected to the storage battery 12, the storage battery 12 supplies power to the central control module 37, and indirectly supplies power to electronic components connected to the central control module 37 through the central control module 37, the plurality of electric wheels 5 are electrically connected to the central control module 37, the central control module 37 supplies power from the storage battery 12 to each electric wheel 5, and controls the operating state of each electric wheel 5 by controlling the power supply to each electric wheel 5, specifically, each electric wheel 5 includes a motor fixedly connected to the corresponding wheel frame 4, a control unit connected to the central control module 37 is integrated in each motor, and the central control module 37 controls the operating state of the corresponding motor by controlling each control unit, thereby controlling the operating state of the corresponding electric wheel 5, the upper end of each wheel frame 4 is fixedly connected with a contact sensor 40, each contact sensor 40 is electrically connected with the central control module 37, when the wheel frame 4 is lifted, the contact sensor 40 on the corresponding wheel frame 4 is in contact with the lower end surface of the bearing plate and sends a signal to the central control module 37, the central control module 37 is used for powering off the corresponding electric wheel 5 to control the corresponding electric wheel 5 to stop working, a remote signal transceiver unit is integrated in the central control module 37 and can receive a remote control signal, a user can remotely control the walking of the trolley through a remote controller or a remote control console, the lower end of the bottom plate 1 is fixedly connected with an ultrasonic flaw detector 38, the ultrasonic flaw detector 38 is electrically connected with the central control module 37, the ultrasonic flaw detector 38 can send a flaw detection result to the central control module 37, and the central control module 37 sends the flaw detection result to the remote control console through the remote signal transceiver unit, thereby monitoring and knowing the condition of the airport runway in real time.
Eight embodiment, on the basis of seven embodiments, bottom plate 1 right side front and back both ends fixedly connected with two infrared distance measuring instrument 39, two infrared distance measuring instrument 39 all with well accuse module 37 link to each other, this device can place a riser in starting point department when specifically using, make two infrared distance measuring instrument 39 shine on this riser, later, this device walking, two infrared distance measuring instrument 39 with real-time supervision distance transmission for well accuse module 37, well accuse module 37 judges this device whether the trajectory of motion appears crooked through comparing two distance numerical values to correct through the rotational speed of controlling a plurality of electronic wheels 5 in corresponding one side crooked, make this device can keep straight line walking all the time.
When the infrared distance measuring device is used specifically, a vertical plate can be placed at the starting point at the beginning, so that two infrared distance measuring devices 39 can conveniently irradiate the vertical plate, and the preparation work is finished;
then, a user can control each electric wheel 5 to rotate through the remote control console through the central control module 37 to drive the device to walk, the step counting wheel 13 synchronously rotates, and the step counting wheel 13 rotates through the step counting wheel 13 driving belt pulley, the step counting wheel 13 driven belt pulley, the central driving gear 32, the central driven gear 33, the plurality of central belt pulleys 34 and the belt to drive the corresponding wheel frame driving shaft belt pulley 35 and the wheel frame double-thread screw belt pulley 36 to rotate, so that the corresponding wheel frame driving shaft 8 and the wheel frame double-thread screw 9 are driven to rotate;
two wheel carrier driving gears 11 corresponding to each wheel carrier double-thread screw 9 move synchronously along with a wheel carrier gear seat 10 to approach each other and are meshed with each wheel carrier transfer gear 7 in sequence in the process, meanwhile, the two wheel carrier driving gears 11 rotate synchronously to drive the meshed wheel carrier transfer gears 7 to rotate, so that the corresponding wheel carriers 4 are lifted, in the process that the wheel carrier gear seats 10 approach each other, the wheel carriers 4 on the two sides in each group of wheel sets 2 are lifted in sequence to reduce the contact area of the device and the airport runway, so that the effect of the device on graded increase of the pressure of the airport runway in the walking process is achieved, the process of different pressures on the runway in different periods in the take-off process of the airplane is simulated, and attention needs to be paid that two wheel sets 2 in each group are left to not lift any more at last to ensure the support of the bottom plate 1;
meanwhile, the wheel frame driving shaft 8 rotates to drive the corresponding clamping driving shaft 16 and the clamping double-head screw 17 to rotate, so as to drive the two clamping gears 19 to approach each other along with the synchronous movement of the clamping gear seat 18, simultaneously, the two clamping gears 19 rotate synchronously, before the wheel frame driving gear 11 and the wheel frame transfer gear 7 are meshed, the high rack 21 on the fixture block 20 on the other side of the corresponding wheel frame 4 is firstly meshed with the corresponding clamping gear 19, and the fixture block 20 is pulled out from the upper clamping groove 14 of the corresponding wheel frame 4 under the action of the clamping gear 19 and the high rack 21, simultaneously, the wheel frame driving gear 11 and the wheel frame transfer gear 7 on one side of the same wheel frame 4 are meshed and drive the corresponding wheel frame 4 to ascend through the wheel frame rack 6 on the side of the same wheel frame 4, then the wheel frame driving gear 11 and the wheel frame transfer gear 7 are disengaged, and, the clamping block 20 corresponds to the lower clamping groove 15 of the wheel frame 4 through the lower rack 22, so that the wheel frame 4 and the bottom plate 1 are fixed again, and at the moment, the electric wheel 5 at the lower end of the corresponding wheel frame 4 is not contacted with the ground any more;
during the trolley walking process, the two ultrasonic flaw detectors 38 transmit the real-time flaw detection results of the pavement of the airport runway to a remote control console for the user to analyze and record.
The invention makes improvement aiming at the problem that the pressure on the road surface can not be changed and the damage of the road surface can not be monitored in real time in the walking process of the existing device, the pressure on the road surface of the device is changed by changing the number of wheels which are contacted with the road surface in the walking process of the device, so that the simulation of the pressure change on the road surface in the airplane taking-off and landing process is realized, and the counting wheels which synchronously rotate along with the counting wheels are adopted as the trigger device of the wheel number control structure of the device, so that the effect of weight change can be better achieved, and meanwhile, the whole device is more stable and difficult to damage by adopting mechanical structure triggering.
Claims (7)
1. The experimental device for the test flight of the airport runway is characterized by comprising a bottom plate (1), wherein the left side of the bottom plate (1) is provided with a wheel set (2), the front side and the rear side of the right side of the bottom plate are provided with two wheel sets (2) side by side, and the upper end of the bottom plate (1) is fixedly connected with a bearing table (3);
the three wheel sets (2) comprise a plurality of wheel frames (4) which are connected to the bottom plate (1) in a vertical sliding mode, the lower end of each wheel frame (4) is connected with an electric wheel (5) in a rotating mode, one side of each wheel frame (4) is fixedly connected with a wheel frame rack (6), a wheel frame transfer gear (7) is meshed beside each wheel frame rack (6), one side of each three wheel set (2) is connected with a wheel frame driving shaft (8) and a wheel frame double-head screw (9) in a rotating mode, two ends of each three wheel frame double-head screw (9) are respectively sleeved with a wheel frame gear seat (10) in a threaded meshing mode, each wheel frame gear seat (10) is connected with a wheel frame driving gear (11) in a rotating mode, the wheel frame driving gear (11) is sleeved on the wheel frame driving shaft (8) in a front-back sliding mode and can rotate along, each wheel carrier driving gear (11) on the three wheel carrier double-thread screws (9) can be meshed with a wheel carrier transfer gear (7) in the wheel set (2), the other sides of the three wheel sets (2) are provided with clamping devices, and the three clamping devices are connected with corresponding wheel carrier driving shafts (8) through belts;
a storage battery (12) is fixedly connected to the bottom plate (1), a plurality of electric wheels (5) are electrically connected with the storage battery (12), a step counting wheel (13) is rotatably connected to the lower end of the bottom plate (1), and the step counting wheel (13) is connected with three wheel carrier double-head screws (9) and three wheel carrier driving shafts (8) through a transmission structure;
two clamping grooves are formed in one side of each wheel frame (4) and are respectively called an upper clamping groove (14) and a lower clamping groove (15);
the clamping device comprises a clamping driving shaft (16) and a clamping double-head screw (17) which are rotatably connected to one side of the corresponding wheel set (2), clamping gear seats (18) are sleeved at two ends of the clamping double-head screw (17) in a threaded engagement manner, a clamping gear (19) is rotatably connected to each clamping gear seat (18), the clamping gear (19) is sleeved on the clamping driving shaft (16) in a front-back sliding manner and can rotate along with the rotation of the clamping driving shaft (16), and the clamping driving shaft (16) and the clamping double-head screw (17) are both connected with corresponding wheel carrier driving shafts (8);
the clamping device also comprises a clamping block (20) which is connected with one side of the wheel frame (4) in a sliding mode in the left and right directions, the clamping block (20) can be matched with the corresponding upper clamping groove (14) and the corresponding lower clamping groove (15), one side of the clamping block (20) is fixedly connected with a high rack (21) which is meshed with the clamping gear (19), the high rack (21) is fixedly connected with a low rack (22) on the same side of the high rack (21), the upper end of the low rack (22) is meshed with an idler wheel (23) which is rotatably connected to the base, and the idler wheel (23) can be meshed with the clamping gear (19).
2. The experimental device for the test flight on the airport runway according to claim 1, characterized in that one side of the fixture block (20) is connected with a side push plate (24) in a left-right sliding way, and the side push plate (24) is connected with the fixture block (20) through a spring;
the upper part of the clamping block (20) is provided with a round head clamping column (25) which is connected to the base in a vertical sliding mode, and the upper end of the round head clamping column (25) is connected with the base through a spring.
3. The experimental device for airport runway test flight according to claim 2, characterized in that the upper and lower sides of the upper and lower slots (14, 15) far from the wheel carrier (4) are provided with inclined planes, and the clamping block (20) and the high rack (21) are provided with inclined planes at the same side.
4. The experimental device for airport runway test flight according to claim 1, characterized in that the wheel carrier driving shaft (8) is coaxially and fixedly connected with a clamping driving pulley (26), the clamping driving shaft (16) is coaxially and fixedly connected with a clamping driven pulley (27), and the clamping driving pulley (26) is connected with the corresponding clamping driven pulley (27) through a belt;
the coaxial fixedly connected with chucking drive gear (28) of chucking drive shaft (16), the coaxial fixedly connected with of chucking double-end screw (17) and corresponding chucking driven gear (29) of chucking drive gear (28) meshing.
5. The experimental device for airport runway test flight according to claim 1, characterized in that the step-counting wheel (13) is coaxially and fixedly connected with a step-counting driving pulley (30), and the step-counting driving pulley (30) is connected with a driven pulley belt of the step-counting wheel (13) which is rotatably connected on the bottom plate (1);
the transmission structure comprises a central driving gear (32) coaxially and fixedly connected with a driven belt pulley of the step counting wheel (13), two central driven gears (33) are meshed with two sides of the central driving gear (32), and a plurality of central belt pulleys (34) are coaxially and fixedly connected with the two central driven gears (33);
the transmission structure further comprises a wheel carrier driving shaft belt pulley (35) which is fixedly connected with the wheel carrier driving shaft (8) in a coaxial mode, the wheel carrier double-thread screw rod belt pulley (36) is fixedly connected with the wheel carrier double-thread screw rod (9) in a coaxial mode, and the wheel carrier driving shaft belt pulley (35) and the wheel carrier double-thread screw rod belt pulley (36) are connected with an adjacent central belt pulley (34) through belt pulleys respectively.
6. The experimental apparatus for airport runway flight test according to claim 1, characterized in that a central control module (37) is fixedly connected to the bottom plate (1), the central control module (37) is electrically connected to the battery (12), a plurality of electric wheels (5) are electrically connected to the central control module (37), a contact sensor (40) is fixedly connected to the upper end of each wheel carrier (4), each contact sensor (40) is electrically connected to the central control module (37), a remote signal transceiver unit is integrated in the central control module (37), the remote signal transceiver unit can receive remote control signals, an ultrasonic flaw detector (38) is fixedly connected to the lower end of the bottom plate (1), and the ultrasonic flaw detector (38) is electrically connected to the central control module (37).
7. The experimental apparatus for airport runway test flight according to claim 6, characterized in that the front and back ends of the right side of the bottom plate (1) are fixedly connected with two infrared distance meters (39), and the two infrared distance meters (39) are connected with the central control module (37).
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| CN201910574910.3A CN110274823B (en) | 2019-06-28 | 2019-06-28 | Airport runway test flight experimental device |
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| CN201910574910.3A CN110274823B (en) | 2019-06-28 | 2019-06-28 | Airport runway test flight experimental device |
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