A wheel drive device

Abstract

The present invention discloses a wheel driving device, specifically relating to the technical field of aircraft maintenance equipment, and is used to solve the technical problem that the existing wheel driving device drives the aircraft wheels first and then conducts a brake test, which is different from the actual landing situation and cannot simulate the actual landing environment. The present invention includes a frame, on which a contact roller is installed. The contact roller is driven to rotate by a driving module installed on the frame. An asphalt concrete layer is arranged on the outer side of the contact roller, and the asphalt concrete layer is used to simulate the aircraft runway surface. The present invention provides a wheel driving device, which can simulate the actual braking environment, so that the test data of the working state of the aircraft wheel brake system can be closer to the actual value, providing strong data theoretical support for the research of the aircraft wheel brake system.

Description

Technical Field

[0001] The present invention belongs to the technical field of aircraft maintenance equipment, and particularly relates to a wheel driving device. Background Art

[0002] When an aircraft is undergoing ground support and maintenance work, it is necessary to regularly test the working state of the aircraft wheel braking system. The existing technology uses a wheel driving device to drive the aircraft wheels to rotate, so that the rotation speed of the wheels reaches a certain speed or more, to simulate the operating state of the wheels at a certain ground speed of the aircraft, and then perform a braking test.

[0003] During the actual landing process, the aircraft is in contact with the ground and in a relative motion state, and at this time the wheels are not rotating. When the aircraft lands, that is, when the wheels contact the ground, the ground drives the wheels to rotate through static friction, and at the same time brakes through the aircraft wheel braking system;

[0004] However, the existing technology has the following deficiencies:

[0005] The existing wheel driving device first drives the aircraft wheels to rotate to a certain speed and then performs a braking test, which is contrary to the actual landing situation (in the actual situation, the aircraft starts to use the wheel braking system when landing), and cannot simulate the above actual landing environment, having certain limitations. Summary of the Invention

[0006] The present invention provides a wheel driving device, which can simulate a real braking environment, so that the test data of the working state of the aircraft wheel braking system can be closer to the real value, providing strong data theoretical support for the research of the aircraft wheel braking system.

[0007] The technical solution adopted by the present invention is as follows:

[0008] A wheel driving device includes a frame, a contact roller is installed on the frame, the contact roller is driven to rotate by a driving module installed on the frame, and an asphalt concrete layer is arranged outside the contact roller, and the asphalt concrete layer is used to simulate the aircraft runway surface.

[0009] According to the above technical scheme, the contact roller is first rotated by the driving module so that the contact roller reaches the corresponding preset speed (i.e., simulating the relative speed of the aircraft at the moment of landing and the runway under real conditions), and then the stationary wheel is gradually approached to the contact roller along a certain preset speed (aircraft descent speed), and finally contacts the contact roller, and then the staff starts the wheel brake system at the moment of contact until the wheel and the contact roller remain stationary, and records the relevant experimental data. When the present invention tests the wheel brake device, the wheel does not rotate at the beginning, but when it contacts the contact roller, the asphalt concrete layer on the surface of the contact roller drives the wheel to rotate through static friction, and brakes at the same time through the wheel brake system, and the process simulates the real braking environment, so that the working state test data of the aircraft wheel brake system can be closer to the real value compared with the existing wheel rotation device, providing strong data theoretical support for the research of aircraft wheel brake system.

[0010] Preferably, a shell is further provided on the frame, and a water spray pipe with a water outlet facing the outside of the contact roller is provided on one side of the shell, and the water spray pipe is connected to a water storage tank inside the shell.

[0011] According to the above technical solution, when it is necessary to test the wheel brake system under simulated rainy weather conditions, first open the water pump inside the shell in advance, and spray water on the asphalt concrete layer still on the surface of the contact roller, and at the same time start the drive module to drive the contact roller to rotate until the entire asphalt concrete layer reaches the corresponding preset humidity and temperature, and then perform the above process test. During the test, the water pipe continues to spray water to simulate the rainy conditions when the aircraft lands, so that the present invention can provide an aircraft runway pavement simulating rainy weather, thereby providing more and more realistic wheel brake system test data.

[0012] Preferably, a sliding plate is slidably connected to one side of the shell, a plurality of water spray pipe arrays are provided, and each of them is movably sleeved on the sliding plate, the water spray pipe is a hose, one end of the water spray pipe is fixedly connected to the water tank, and the other end passes through the outside of the sliding plate, and the sliding plate slides back and forth on one side of the shell through a reciprocating sliding mechanism.

[0013] According to the above technical solution, by setting a plurality of the water spray pipes, the coverage area of water spraying is increased. Additionally, through the reciprocating sliding mechanism, the sliding plate reciprocates vertically on one side of the housing. Since the water spray pipes are flexible hoses, the ends of all the water spray pipes rotate reciprocally in the vertical direction with the position where the water spray pipes extend from the surface of the sliding plate as the base point, causing the water outlet ends of the water spray pipes to swing back and forth in the vertical direction, thereby further increasing the coverage area of water spraying, enabling the asphalt concrete layer to achieve full coverage of water spraying, thus improving the efficiency of wetting the asphalt concrete layer. Moreover, the water spray pipes swing along the corresponding movement trajectories, capable of simulating the real situation of rainwater swinging in the air with the airflow, thereby providing a more realistic simulation of rainy weather conditions.

[0014] Preferably, a xenon lamp is further provided on one side of the housing where the water spray pipes are arranged, and the emitting end of the xenon lamp is aligned with the outer side of the contact roller.

[0015] According to the above technical solution, when it is necessary to test the wheel brake system under simulated sunny conditions, first, turn on the xenon lamp in advance so that its light shines on the asphalt concrete layer on the surface of the contact roller. At the same time, start the drive module to drive the contact roller to rotate until the entire asphalt concrete layer reaches the corresponding preset dryness and temperature, and then conduct the test of the above process. During the test, the xenon lamp continuously shines to simulate the sunny situation when the aircraft lands, thereby enabling the present invention to provide an aircraft runway surface simulating sunny weather, and thus providing more and more realistic test data for the wheel brake system.

[0016] Preferably, the contact roller includes a contact wheel, and inclined wheels symmetrically arranged coaxially on both sides of the contact wheel. A threaded rod is coaxially and penetratingly sleeved inside the contact wheel, and both ends of the threaded rod are respectively sleeved inside the inclined wheels on both sides of the contact wheel and are threadedly connected to the inclined wheels; a guide rod is also coaxially and penetratingly sleeved inside the contact wheel, and both ends of the guide rod are respectively sleeved inside the inclined wheels on both sides of the contact wheel and are slidably connected to the inclined wheels; one end of the threaded rod passes through the outside of the inclined wheel and is driven to rotate by a first motor outside the inclined wheel.

[0017] According to the above technical solution, before the test, the staff first moves the wheel to the contact roller to adjust the contact roller. First, rotate the threaded rod driven by the first motor. Since the inclined wheels are threadedly connected to the threaded rod, the two inclined wheels can approach or move away from the contact wheel at a constant speed, enabling the contact roller to adjust itself according to the width of the wheel to be tested for adaptation, that is, the contact wheel matches the outer side of the wheel, and the slope of the inclined wheel abuts against the corner of the wheel. Therefore, it can adapt to and match more different models of wheels, with higher practicality.

[0018] Preferably, an end face disc is provided at the outer end of the slope wheel. A plurality of second infrared distance measuring sensors are evenly arranged in a circumferential direction along the slope wheel on the inner side of the end face disc. The second infrared distance measuring sensors are electrically connected to a second alarm module arranged on the contact roller. A mounting seat is slidably connected to the machine frame. The mounting seat slides along the width direction of the machine frame. One end of the mounting seat is connected to a first telescopic cylinder. The telescopic column of the first telescopic cylinder is fixedly connected to the mounting seat. The cylinder body of the first telescopic cylinder is fixedly connected to the machine frame.

[0019] According to the above technical solution, before the staff conducts the test, the machine wheel is first moved to the contact roller to adjust the contact roller. After adjusting the width adaptation between the contact roller and the machine wheel (that is, the abutting wheel matches the outer side surface of the machine wheel, and the slope of the slope wheel abuts against the corner of the machine wheel), at this time, the second infrared distance measuring sensors on the inner side of the end face disc measure the distance. The measured distance at this time is the distance from the end face disc to the side surface of the machine wheel. If the values measured by the second infrared sensors on both sides are different and the second alarm module gives an alarm, it proves that the top edge of the machine wheel is not aligned with the center of the abutting wheel. If the test is directly carried out, it will have an adverse impact on the data. Therefore, when this situation occurs, the staff starts the first telescopic cylinder after receiving the alarm reminder. The first telescopic rod drives the entire mounting seat and the contact roller to move along the width direction of the machine frame, so as to adjust the top edge of the machine wheel to be aligned with the center of the abutting wheel. When the adjustment reaches the stop of the second alarm module, it indicates that the adjustment is in place.

[0020] Preferably, connecting columns are respectively and slidably arranged between the abutting wheel and the adjacent slope wheel. A plurality of first infrared distance measuring sensors are evenly arranged in a circumferential direction on the outer side of the connecting columns. The first infrared distance measuring sensors are electrically connected to a first alarm module arranged on the contact roller. One end of the bottom of the machine frame close to the contact roller in the length direction is hinged with a support plate. A support telescopic cylinder is further arranged at the bottom of the machine frame. The top end of the support telescopic cylinder is connected with a hinge seat between the support telescopic cylinder and the machine frame. One end of the hinge seat is slidably connected with the machine frame along the length direction of the machine frame. The other end of the hinge seat is fixedly connected to the support telescopic cylinder. A universal wheel is arranged at the bottom end of the support telescopic cylinder.

[0021] According to the above technical solution, before the test, the staff moves the wheel to the contact roller to adjust the contact roller. After aligning the top edge of the wheel with the center of the abutting wheel, the different first infrared sensors on both sides of the abutting wheel measure the distance. If the distances measured by the first infrared sensors on both sides are different, the first alarm module starts to alarm, indicating that the radial plane of the wheel is not parallel to the radial plane of the abutting wheel. At this time, if the test is carried out, it will cause a large deviation in the test data and there will also be major safety hazards during the test. Therefore, when the staff receives this alarm reminder, they start and continuously raise the support telescopic cylinder, causing the front end of the frame to rotate along the hinge point of the support plate. At the same time, the frame slides on the hinge seat, causing the rear end of the frame to be lifted by a certain height. The staff holds the push rod at the tail of the frame, and the universal wheel at the bottom of the support telescopic cylinder contacts the ground. At this time, the staff operates the push rod to rotate the entire frame horizontally. The outer end of the telescopic rod of the support telescopic cylinder moves in an arc on the ground with the contact point between the wheel and the contact roller as the center of the circle until the first alarm module stops alarming, which proves that the adjustment is in place, that is, the radial plane of the wheel is parallel to the radial plane of the abutting wheel.

[0022] Preferably, the output end of the drive module is installed in the drive disk, the drive disk is rotatably connected to the frame, the drive disk is connected to the driven disk on the frame through a belt, and the driven disk is rotatably connected to the frame; the contact roller is installed on the mounting seat through the mounting shafts on both sides of the taper wheel, and one mounting shaft on one side of the contact roller passes through the outside of the mounting seat and is installed inside the driven disk.

[0023] According to the above technical solution, when driving the contact roller to rotate, the output end of the drive module drives the drive disk to rotate, and then drives the driven disk to rotate under the action of the belt. The rotating disk drives the mounting shaft to rotate on the mounting seat, and then drives the contact roller to rotate on the mounting seat.

[0024] Preferably, the output end of the drive module is circumferentially and uniformly provided with insertion teeth, and is inserted into the drive disk through the insertion tooth groove inside the drive disk from one side of the drive disk for fitting installation; one end of the drive module is provided with a second telescopic cylinder, the telescopic column of the second telescopic cylinder is fixedly connected to the drive module, and the cylinder body of the second telescopic cylinder is fixedly connected to the frame.

[0025] According to the above technical solution, after the driving module drives the contact roller to reach the corresponding preset speed, the second telescopic rod retracts to drive the entire driving module to move in the width direction on the frame, thereby driving the engaging teeth in the output end to slide in the engaging tooth grooves until the engaging teeth are disengaged from the engaging tooth grooves, and then the driving module is turned off, so as to prevent the stationary wheel from braking the contact roller when contacting the contact roller during the test, resulting in blockage of the rotation of the driving module and damage to the driving module.

[0026] Preferably, engaging teeth are evenly arranged around the circumference of the end of the mounting shaft, and the engaging teeth are engaged with the engaging tooth grooves inside the driving disc, so that the mounting shaft of the contact roller slides in the width direction of the frame inside the driven disc.

[0027] According to the above technical solution, during the adjustment process of adapting the width of the contact roller to the wheel, the mounting shaft of the contact roller slides in the width direction of the frame inside the driven disc. At this time, the engaging teeth slide in the engaging tooth grooves but always remain engaged with the engaging tooth grooves and do not disengage from them. Furthermore, the mounting shaft always maintains a transmission state with the driving module during the adjustment process and is not affected by physical interference.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0029] 1. When testing the wheel brake device of the present invention, at the beginning, the wheel does not rotate. Instead, when it contacts the contact roller, the asphalt concrete layer on the surface of the contact roller drives the wheel to rotate through static friction, and at the same time, it is braked by the wheel brake system. This process simulates the real braking environment, making the test data of the working state of the aircraft wheel brake system closer to the real value compared with the existing wheel driving device, providing strong data theory support for the research of the aircraft wheel brake system.

[0030] Preferably, a housing is further provided on the frame, and a water outlet on one side of the housing is aligned with a water spraying pipe outside the contact roller, and the water spraying pipe is connected to a water pump inside the housing.

[0031] 2. The present invention can provide an aircraft runway surface simulating rainy weather, thereby providing more and more real test data for the wheel brake system.

[0032] 3. The water spraying pipe swings along a corresponding movement track under the action of the reciprocating sliding mechanism in the present invention, which can simulate the real situation of rain swinging in the air with the airflow, thereby providing a more real simulation situation of rainy weather.

[0033] 4. During the testing process of the present invention, the xenon lamp is continuously exposed to simulate sunny conditions when the aircraft lands, so that the present invention can provide an aircraft runway surface simulating sunny weather, thereby providing more and more real test data for the wheel brake system.

[0034] 5. The present invention can alarm abnormal conditions of the wheels before testing and adjust according to corresponding mechanisms to achieve a better test state.

[0035] 6. When the present invention is performing testing, the drive module can be disengaged from the transmission component to prevent the braking effect generated on the contact wheel when the stationary wheel contacts the contact roller from damaging the drive module. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be described by way of examples with reference to the drawings, wherein:

[0037] Figure 1 is a perspective view of a wheel driving device in the present invention;

[0038] Figure 2 is a front view of a wheel driving device in the present invention;

[0039] Figure 3 is a top view of a wheel driving device in the present invention;

[0040] Figure 4 is a schematic diagram of the internal structure of the housing in the present invention;

[0041] Figure 5 is a perspective view of the contact roller in the present invention;

[0042] Figure 6 is a side view of a wheel driving device in the present invention;

[0043] Figure 7 is a side view of a wheel driving device in the present invention when the frame angle is adjusted;

[0044] Figure 8 is a structural installation diagram of the support telescopic cylinder in the present invention;

[0045] Figure 9 is a schematic diagram of the connection structure between the output end and the drive disc in the present invention;

[0046] Figure 10 is Figure 9 a structural cross-sectional view in

[0047] Figure 11 is a schematic diagram of the connection structure between the mounting shaft and the driven disc in the present invention;

[0048] Figure 12 isFigure 11 Structural sectional view of the middle cross-section.

[0049] Wherein: 1-frame, 2-asphalt concrete layer, 3-drive module, 4-housing, 5-water spray pipe, 6-sliding plate, 7-xenon lamp, 8-abutting wheel, 9-inclination wheel, 10-threaded rod, 11-guide rod, 12-first motor, 13-connecting column, 14-first infrared ranging sensor, 15-supporting plate, 16-supporting telescopic cylinder, 17-hinged seat, 18-end face plate, 19-second infrared ranging sensor, 20-mounting seat, 21-first telescopic cylinder, 22-output end, 23-drive disc, 24-belt, 25-driven disc, 26-mounting shaft, 27-insertion tooth, 28-insertion tooth groove, 29-second telescopic cylinder, 30-engaging tooth, 31-engaging tooth groove, 33-cam, 34-second motor, 35-placement cavity, 36-push rod, 37-first spring, 38-bottom plate, 39-pressing column, 40-water storage tank, 41-one-way valve, 42-auxiliary supporting plate, 43-second spring, 44-elastic water bag, 45-universal pulley. Detailed implementation manners

[0050] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present application.

[0051] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0052] The following will be combined with Figures 1 to 12 to describe the present invention in detail.

[0053] Embodiment 1

[0054] A wheel driving device. In this embodiment, as Figures 1 to 3 shown, it includes a frame 1. A contact roller is installed on the frame 1. The contact roller is driven to rotate by a driving module 3 installed on the frame 1. An asphalt concrete layer 2 is arranged on the outer side of the contact roller, and the asphalt concrete layer 2 is used to simulate the runway surface of an airplane;

[0055] During specific use, first, the driving module 3 drives the contact roller to rotate, so that the contact roller reaches a corresponding preset speed (i.e., simulating the relative speed between an airplane and the runway at the moment of landing in a real situation). Then, let the stationary wheel gradually approach the contact roller at a certain preset speed (the descending speed of the airplane), and finally come into contact with the contact roller. Then, the staff starts the wheel brake system at the moment of contact until both the wheel and the contact roller are stationary, and records the relevant experimental data. When testing the wheel brake device of the present invention, at the beginning, the wheel does not rotate. Instead, when it comes into contact with the contact roller, the asphalt concrete layer 2 on the surface of the contact roller drives the wheel to rotate through static friction, and at the same time, it is braked by the wheel brake system. Its process simulates the real braking environment, making the test data of the working state of the airplane wheel brake system closer to the real value compared with the existing wheel driving devices, providing strong data theory support for the research of the airplane wheel brake system.

[0056] In this embodiment, as Figures 1 to 3 shown, a housing 4 is further provided on the frame 1. A water outlet on one side of the housing 4 is aligned with a water spray pipe 5 outside the contact roller, and the water spray pipe 5 is connected to a water storage tank 40 inside the housing 4.

[0057] During specific use, when testing the wheel brake system under the simulated rainy weather condition is required, first, water is sprayed on the asphalt concrete layer 2 on the surface of the contact roller, and at the same time, the driving module 3 is started to drive the contact roller to rotate until the entire asphalt concrete layer 2 reaches the corresponding preset humidity and temperature. Then, the above process is tested, and the water spray pipe 5 continuously sprays water during the test to simulate the rain situation when the airplane lands, so that the present invention can provide a runway surface of an airplane under simulated rainy weather, thereby providing more and more real test data of the wheel brake system.

[0058] In this embodiment, as Figures 1 to 3 shown, a sliding plate 6 is slidably connected to one side of the housing 4. A plurality of water spray pipes 5 are arranged in an array, and each of them passes through and is movably sleeved on the sliding plate 6. The water spray pipe 5 is a flexible pipe, and one end of the water spray pipe 5 is connected to the water storage tank 40; as Figure 4As shown, the reciprocating sliding mechanism includes a bottom plate 38 fixedly arranged on the top of the sliding plate 6. A fixed plate is provided at the top of the housing 4. A cam 33 is rotatably connected to the fixed plate on the side close to the sliding plate 6. The cam 33 is driven to rotate by a second motor 34 on the fixed plate. A plurality of rotating rollers are rotatably arranged at the bottom of the bottom plate 38 in an array. The rotating rollers are in contact with the cam 33. A first spring 37 is provided between the bottom plate 38 and the top of the housing 4.

[0059] During specific use, by arranging a plurality of the water spray pipes 5, the coverage area of water spraying is increased. In addition, through the reciprocating sliding mechanism, the sliding plate 6 reciprocally slides in the vertical direction on one side of the housing 4. Since the water spray pipes 5 are flexible hoses, the ends of all the water spray pipes 5 make reciprocating rotations in the vertical direction with the position where the water spray pipes 5 extend from the surface of the sliding plate 6 as the base point, so that the water outlet ends of the water spray pipes 5 swing back and forth in the vertical direction, thereby further increasing the coverage area of water spraying, enabling the asphalt concrete layer 2 to achieve full coverage of water spraying, thus improving the efficiency of wetting the asphalt concrete layer 2. And the water spray pipes 5 swing along the corresponding movement trajectories, which can simulate the real situation of rainwater swinging in the air with the airflow, thereby providing a more realistic simulation of rainy weather.

[0060] In this embodiment, as Figures 1 to 3 shown, a placement cavity 35 is further provided on one side of the housing 4 where the water spray pipes 5 are arranged. The placement cavity 35 is arranged above the water spray pipes 5. A xenon lamp 7 is provided in the placement cavity 35. The emission end of the xenon lamp 7 is inclined downward to be aligned with the outer side of the contact roller.

[0061] During specific use, when it is necessary to test the wheel brake system under simulated sunny conditions, first turn on the xenon lamp 7 in advance so that its light shines on the asphalt concrete layer 2 on the surface of the contact roller. At the same time, start the drive module 3 to drive the contact roller to rotate until the entire asphalt concrete layer 2 reaches the corresponding preset dryness and temperature, and then conduct the above-mentioned process test. And during the test process, the xenon lamp 7 keeps shining, so as to simulate the sunny situation when the aircraft lands, thereby enabling the present invention to provide an aircraft runway surface under simulated sunny weather, and thus providing more and more realistic test data of the wheel brake system.

[0062] In this embodiment, as Figures 1 to 5As shown, the contact roller includes a contact wheel 8, and slope wheels 9 symmetrically arranged coaxially on both sides of the contact wheel 8. A threaded rod 10 is coaxially and penetratingly sleeved inside the contact wheel 8. Both ends of the threaded rod 10 are respectively sleeved inside the slope wheels 9 on both sides of the contact wheel 8 and are threadedly connected to the slope wheels 9. A guide rod 11 is also coaxially and penetratingly sleeved inside the contact wheel 8. Both ends of the guide rod 11 are respectively sleeved inside the slope wheels 9 on both sides of the contact wheel 8 and are slidably connected to the slope wheels 9. One end of the threaded rod 10 passes out from the outside of the slope wheel 9 and is driven to rotate by a first motor 12 outside the slope wheel 9.

[0063] During specific use, before the test, the staff moves the machine wheel to the contact roller to adjust the contact roller. First, the rotation driven by the first motor 12 causes the threaded rod 10 to rotate. Since the slope wheels 9 are threadedly connected to the threaded rod 10, the two slope wheels 9 can approach or move away from the contact wheel 8 at a constant speed, so that the contact roller can adjust itself according to the width of the machine wheel to be tested for adaptation. That is, the contact wheel 8 matches the outer side surface of the machine wheel, and the slope of the slope wheel 9 abuts against the corner of the machine wheel. Therefore, it can adapt to and match more different models of machine wheels, with higher practicality.

[0064] In this embodiment, as Figures 1 to 5 shown, an end face plate 18 is arranged at the outer end of the slope wheel 9. A plurality of second infrared distance measuring sensors 19 are evenly arranged circumferentially along the inner side of the end face plate 18 along the slope wheel 9. The second infrared distance measuring sensors 19 are electrically connected to a second alarm module arranged on the contact roller. A mounting seat 20 is slidably connected to the frame 1. The mounting seat 20 slides along the width direction of the frame 1. One end of the mounting seat 20 is connected to a first telescopic cylinder 21. The telescopic column of the first telescopic cylinder 21 is fixedly connected to the mounting seat 20, and the cylinder body of the first telescopic cylinder 21 is fixedly connected to the frame 1.

[0065] During specific use, before the test, the staff first move the wheel to the contact roller to adjust the contact roller. After adjusting the width adaptation between the contact roller and the wheel (that is, the abutting wheel 8 matches the outer side surface of the wheel, and the slope of the slope wheel 9 abuts against the corner of the wheel), at this time, the second infrared distance measuring sensor 19 inside the end face plate 18 measures the distance. The distance measured at this time is the distance from the end face plate 18 to the side surface of the wheel. If the values measured by the second infrared sensors on both sides are different and the second alarm module issues an alarm, it proves that the top edge of the wheel is not aligned with the center of the abutting wheel 8. If the test is directly carried out, it will have an adverse impact on the data. Therefore, when this situation occurs, the staff start the first telescopic cylinder 21 after receiving the alarm reminder. The first telescopic rod drives the entire mounting seat 20 and the contact roller to move along the width direction of the frame 1, so as to adjust the top edge of the wheel to be aligned with the center of the abutting wheel 8. When the adjustment reaches the stop of the second alarm module, it indicates that the adjustment is in place.

[0066] In this embodiment, as Figures 1 to 5 shown, connection columns 13 are respectively slidably arranged between the abutting wheel 8 and the adjacent slope wheel 9. A plurality of first infrared distance measuring sensors 14 are evenly distributed around the outer side of the connection column 13; the first infrared distance measuring sensors 14 are electrically connected to the first alarm module arranged on the contact roller; one end of the frame 1 close to the contact roller in the length direction is hinged with a support plate 15 at the bottom, as Figure 8 shown, a support telescopic cylinder 16 is further arranged at the bottom of the frame 1. The top end of the support telescopic cylinder 16 is connected with a hinge seat 17 to the frame 1. One end of the hinge seat 17 is rotatably connected to the frame 1, and the other end of the hinge seat 17 is fixedly connected to the support telescopic cylinder 16.

[0067] During actual use, before the test, the staff moves the wheel to the contact roller to adjust the contact roller. After aligning the top edge of the wheel with the center of the abutting wheel 8, different first infrared sensors on both sides of the abutting wheel 8 measure the distance. If the distances measured by the first infrared sensors on both sides are different, the first alarm module starts to alarm, indicating that the radial plane of the wheel is not parallel to the radial plane of the abutting wheel 8. At this time, if the test is carried out, it will cause a large deviation in the test data and there will also be major safety hazards during the test. Therefore, when the staff receives this alarm reminder, they start and continuously raise the support telescopic cylinder 16, causing the front end of the frame 1 to rotate along the hinge point of the support plate 15. At the same time, the frame 1 slides on the hinge seat 17, causing the rear end of the frame 1 to be lifted by a certain height. The staff holds the push rod 36 at the tail of the frame 1, and the universal wheel at the bottom of the support telescopic cylinder 16 contacts the ground. At this time, the staff operates the push rod 36 to rotate the entire frame 1 in the horizontal direction. The outer end of the telescopic rod of the support telescopic cylinder 16 moves in an arc on the ground with the contact point between the wheel and the contact roller as the center of the circle until the first alarm module stops alarming, which proves that the adjustment is in place, that is, the radial plane of the wheel is parallel to the radial plane of the abutting wheel 8.

[0068] It is worth mentioning that when testing the wheel braking system, the height supported by the support telescopic cylinder 16 can be adjusted. The bottom of the support telescopic rod remains stationary (the universal pulley is locked), and the frame 1 slides on the top of the hinge seat 17 to adjust the angle between the frame 1 and the ground, and makes the angle within the range of greater than or equal to 2 degrees to less than or equal to 3 degrees. At this time, the wheel abuts against the contact roller in a horizontal movement manner, so as to simulate the scenario of the aircraft landing at an angle of greater than or equal to 2 degrees to less than or equal to 3 degrees with the ground, which conforms to the actual landing situation and further improves the data reliability of the present invention.

[0069] In this embodiment, as Figures 1 to 3 shown, the output end 22 of the drive module 3 is installed in the drive disk 23. The drive disk 23 is rotatably connected to the frame 1. The drive disk 23 is connected to the driven disk 25 on the frame 1 through a belt 24. The driven disk 25 is rotatably connected to the frame 1. The contact roller is installed on the mounting seat 20 through the mounting shafts 26 on both sides of the bevel wheel 9. The mounting shaft 26 on one side of the contact roller passes through the outside of the mounting seat 20 and is installed inside the driven disk 25.

[0070] During specific use, when driving the contact roller to rotate, the output end 22 of the driving module 3 drives the driving disk 23 to rotate, and then drives the driven disk 25 to rotate under the action of the belt 24. The rotating disk drives the mounting shaft 26 to rotate on the mounting seat 20, and further drives the contact roller to rotate on the mounting seat 20.

[0071] In this embodiment, as Figures 9 to 10 shown, the output end 22 of the driving module 3 is provided with engaging teeth 27 evenly distributed along its circumferential direction, and is inserted into the inside of the driving disk 23 through the engaging tooth groove 28 inside the driving disk 23 from one side of the driving disk 23 for fitting and installation; one end of the driving module 3 is provided with a second telescopic cylinder 29. The telescopic column of the second telescopic cylinder 29 is fixedly connected to the driving module 3, and the cylinder body of the second telescopic cylinder 29 is fixedly connected to the frame 1. The ends of the engaging teeth 27 and the engaging tooth groove 28 are both set to be arc-shaped for convenient insertion.

[0072] During specific use, when the driving module 3 drives the contact roller to reach the corresponding preset speed, the second telescopic rod retracts to drive the entire driving module 3 to move in the width direction on the frame 1, and further drives the engaging teeth 27 in the output end 22 to slide in the engaging tooth groove 28 until the engaging teeth 27 are separated from the engaging tooth groove 28, and then the driving module 3 is turned off. This is to prevent the stationary wheel from generating a braking effect on the contact roller when it contacts the contact roller during testing, resulting in blockage of the rotation of the driving module 3 and damage to the driving module 3.

[0073] In this embodiment, as Figures 11 to 12 shown, the end of the mounting shaft 26 is provided with engaging teeth 30 evenly distributed along its circumferential direction. The engaging teeth 30 are engaged with the engaging tooth groove 31 inside the driving disk 23, and the mounting shaft 26 of the contact roller slides in the width direction of the frame 1 inside the driven disk 25.

[0074] During specific use, during the adjustment process of adapting the width of the contact roller to the wheel, the mounting shaft 26 of the contact roller slides in the width direction of the frame 1 inside the driven disk 25. At this time, the engaging teeth 30 slide in the engaging tooth groove 31 but always remain engaged with the engaging tooth groove 31 and do not disengage from it. Furthermore, the mounting shaft 26 always maintains a transmission state with the driving module 3 during the adjustment process without being affected by physical interference.

[0075] Embodiment 2

[0076] In this embodiment, different from the above embodiment, as Figure 4As shown, a pressing column 39 which is slidably connected to the housing 4 is provided below the cam 33. An intermittent water spraying mechanism is connected between each water spraying pipe 5 and the water storage tank 40. The intermittent water spraying mechanism includes an elastic water bag 44 provided below the pressing column. One-way valves 41 are connected between the elastic water bag 44 and the water spraying pipe 5, and between the elastic water bag 44 and the water storage tank 40. The water outlet direction of the one-way valve 41 faces the direction of the water spraying pipe 5; all the elastic water bags 44 are overlapped and arranged below the pressing column 39. An auxiliary support plate 42 is provided between the lowermost elastic water bag 44 and the box body, and a second compression spring is provided between the auxiliary support plate 42 and the box body.

[0077] During specific use, the convex end of the cam 33 jacks up the bottom plate 38 upwards, so that the sliding plate 6 slides upwards, and further the water spraying pipe 5 rotates downwards. When the convex end of the cam 33 abuts against the pressing column 39 downwards, the sliding plate 6 slides downwards under the action of the first spring 37, so that the water spraying pipe 5 rotates upwards, thus completing the reciprocating swing of the water spraying pipe 5; at the same time, when the convex end of the cam 33 abuts against the pressing column 39 downwards, the pressing column 39 slides downwards to squeeze all the overlapped elastic water bags 44. Each elastic water bag 44 is squeezed under the action of the auxiliary support plate 42 and the pressing column 39, so that the water inside is pressed into the water spraying pipe 5 through the one-way valve 41 and sprayed out. When the convex end of the cam 33 jacks up the bottom plate 38 upwards, the elastic water bag 44 restores its deformation, so that the liquid in the water storage tank 40 is pressed into the elastic water bag 44 for standby under the negative pressure action, thus realizing the intermittent water spraying of the water spraying pipe 5, so that the asphalt concrete layer 2 will not be continuously and excessively sprayed with water. While saving the spraying water, the preset humidity of the asphalt concrete layer 2 can be maintained.

[0078] Embodiment 3

[0079] Different from the above embodiment, a first roller is provided at the bottom of the frame 1. The bottom of the first roller is tangent to the bottom end of the support plate 15, and a second roller is further provided at the tail end. The rotating shaft of the second roller is higher than the rotating shaft of the first roller. When the staff needs to move the present invention, press down the push rod 36. At this time, the first roller rotates with the first roller as the fulcrum, and the second roller contacts the ground. At this time, it is convenient for the staff to move the device.

[0080] Embodiment 4

[0081] Different from the above embodiment, it further includes a detection method for the wheel brake system:

[0082] First, determine the weather environment to be simulated, and then process the asphalt concrete layer 2 on the surface of the contact roller through the corresponding water spray pipe 5 or xenon lamp 7. Before the test, the staff moves the landing gear to the contact roller to adjust the contact roller. The contact roller is adjusted so that it can adjust itself according to the width of the landing gear to be tested, the center of the top edge of the landing gear is aligned with the center of the abutting wheel 8, and the radial plane of the landing gear is parallel to the radial plane of the abutting wheel 8. Then, start the drive module 3 to drive the contact roller to rotate so that the contact roller reaches the corresponding preset speed (i.e., simulate the relative speed between the aircraft and the runway at the moment of landing in real situations). At this time, control the drive module 3 to move it away from the transmission structure, and then adjust the lifting angle of the frame 1 to make the stationary landing gear gradually approach the contact roller horizontally at a certain preset speed (the aircraft descent speed) and finally contact the contact roller. Then, the staff starts the landing gear braking system at the moment of contact until both the landing gear and the contact roller are stationary, and record the relevant experimental data.

[0083] The above embodiments only represent the specific implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation to the protection scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the technical solution of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application.

Claims

1. A wheel belt rotating device, characterized in that: The invention comprises a frame (1), a contact roller is mounted on the frame (1), the contact roller is driven to rotate by a driving module (3) mounted on the frame (1), an asphalt concrete layer (2) is arranged on the outer side of the contact roller, and the asphalt concrete layer (2) is used to simulate the pavement of an aircraft runway; The contact roller comprises an abutment wheel (8), and a bevel wheel (9) coaxially and symmetrically arranged on both sides of the abutment wheel (8); a threaded rod (10) is coaxially penetrated and sleeved inside the abutment wheel (8); two ends of the threaded rod (10) are respectively sleeved inside the bevel wheels (9) on both sides of the abutment wheel (8) and are threadedly connected to the bevel wheels (9); a guide rod (11) is also coaxially penetrated and sleeved inside the abutment wheel (8); two ends of the guide rod (11) are respectively sleeved inside the bevel wheels (9) on both sides of the abutment wheel (8) and are slidably connected to the bevel wheels (9); one end of the threaded rod (10) passes through the outside of the bevel wheel (9) and is driven to rotate by a first motor (12) outside the bevel wheel (9).

2. The wheel belt rotation device according to claim 1, characterized in that: The frame (1) is also provided with a shell (4), one side of the shell (4) is provided with a water spray pipe (5) with a water outlet facing the outside of the contact roller, and the water spray pipe (5) is connected to a water storage tank (40) inside the shell (4).

3. The wheel belt rotation device according to claim 2, characterized in that: A sliding plate (6) is slidably connected to one side of the shell (4); a plurality of water spray pipes (5) are arranged in an array and are respectively inserted through and movably sleeved on the sliding plate (6); the water spray pipe (5) is a hose; one end of the water spray pipe (5) is fixedly connected to the water storage tank (40), and the other end passes through the outside of the sliding plate (6); the sliding plate (6) reciprocates on one side of the shell (4) through a reciprocating sliding mechanism.

4. The wheel belt rotation device according to claim 2, characterized in that: The housing (4) is also provided with a xenon lamp (7) on the side where the water spray pipe (5) is provided, and the emission end of the xenon lamp (7) is aimed at the outside of the contact roller.

5. The wheel belt rotation device according to claim 1, characterized in that: An end plate (18) is arranged at the outer end of the incline wheel (9), and a plurality of second infrared distance measuring sensors (19) are evenly arranged on the inner side of the end plate (18) along the circumference of the incline wheel (9), and the second infrared distance measuring sensors (19) are electrically connected to a second alarm module arranged on the contact roller; a mounting seat (20) is slidably connected to the frame (1), and the mounting seat (20) slides along the width direction of the frame (1); one end of the mounting seat (20) is connected to a first telescopic cylinder (21), a telescopic column of the first telescopic cylinder (21) is fixedly connected to the mounting seat (20), and a cylinder body of the first telescopic cylinder (21) is fixedly connected to the frame (1).

6. The wheel belt rotation device according to claim 1, characterized in that: A connecting column (13) is slidably arranged between the abutting wheel (8) and the adjacent inclined wheel (9), and a plurality of first infrared distance measuring sensors (14) are evenly arranged around the outer side of the connecting column (13); the first infrared distance measuring sensor (14) is electrically connected to a first alarm module arranged on the contact roller; a support plate (15) is hingedly connected to the bottom of one end of the frame (1) close to the contact roller in the length direction; a supporting telescopic cylinder (16) is also arranged at the bottom of the frame (1); an articulated seat (17) is connected between the top end of the supporting telescopic cylinder (16) and the frame (1); one end of the articulated seat (17) is slidably connected to the frame (1) along the length direction of the frame (1), and the other end of the articulated seat (17) is fixedly connected to the supporting telescopic cylinder (16); and a universal pulley is arranged at the bottom of the supporting telescopic cylinder (16).

7. The wheel belt rotation device according to claim 5, characterized in that: The output end (22) of the driving module (3) is mounted in a driving disk (23), the driving disk (23) is rotatably connected to the frame (1), the driving disk (23) is connected to a driven disk (25) on the frame (1) via a belt (24), and the driven disk (25) is rotatably connected to the frame (1); the contact roller is mounted on the mounting seat (20) via mounting shafts (26) on both sides of the bevel wheel (9), and the mounting shaft (26) on one side of the contact roller passes through the outside of the mounting seat (20) and is mounted inside the driven disk (25).

8. The wheel belt rotation device according to claim 7, characterized in that: The output end (22) of the driving module (3) is evenly provided with engaging teeth (27) along its circumference, and is inserted into the driving disk (23) from one side through the engaging tooth groove (28) inside the driving disk (23) for mating installation; a second telescopic cylinder (29) is provided at one end of the driving module (3), the telescopic column of the second telescopic cylinder (29) is fixedly connected to the driving module (3), and the cylinder body of the second telescopic cylinder (29) is fixedly connected to the frame (1).

9. The wheel belt rotation device according to claim 8, characterized in that: The end of the mounting shaft (26) is evenly provided with engaging teeth (30) along its circumference, and the engaging teeth (30) engage with engaging tooth grooves (31) inside the driving disk (23), so that the mounting shaft (26) of the contact roller slides inside the driven disk (25) along the width direction of the frame (1).

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