CN114394563A

CN114394563A - Turnover system

Info

Publication number: CN114394563A
Application number: CN202111514489.0A
Authority: CN
Inventors: 刘雪松; 王志华; 邵天双; 李凯亮
Original assignee: Beijing Institute of Specialized Machinery
Current assignee: Beijing Institute of Specialized Machinery
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-04-26

Abstract

The invention discloses a turnover system which comprises a driving rolling device and a driven rolling device, wherein the driving rolling device and the driven rolling device respectively comprise a support frame and an embracing ring, the support frame is provided with two rollers which are oppositely arranged, the embracing ring is clamped between the two rollers and comprises two semicircular rings, one ends of the two semicircular rings are mutually hinged, the other ends of the two semicircular rings are fixedly connected through a fastening piece, a clamping mechanism which is radially arranged is arranged in the embracing ring, the two embracing rings are fixedly connected through a connecting rod, a rack which is circumferentially arranged is fixedly arranged on the embracing ring of the driving rolling device, a gear which is meshed with the rack is arranged on the support frame of the driving rolling device, and the gear is driven by a motor. The overturning system is suitable for overturning and position adjusting of an airplane model in a wind tunnel, is compact in structural size and good in operation adaptability, and can greatly reduce labor hour consumption.

Description

Turnover system

Technical Field

The invention relates to the field of tools related to airplane models in wind tunnels, in particular to a turning system for airplane models in wind tunnels.

Background

Before different types of airplane products are put into use, the blowing test is carried out in the wind tunnel by using the scaled model, and in the blowing test process, the airplane model is placed on a balance support rod in the wind tunnel to carry out the blowing test at different positions and angles. In the blowing test, the airplane model needs to be turned over and the position of the airplane model needs to be adjusted, the existing method is that the whole wind tunnel test step is dismantled, and the airplane model is turned over and the position of the airplane model is adjusted through a crane, so that the method is difficult to operate and low in efficiency, and the time of the airplane model test can be greatly prolonged.

Disclosure of Invention

The invention aims to provide a turnover system which is suitable for turning over and adjusting the position of an airplane model in a wind tunnel, has compact structural size and good operation adaptability, and can greatly shorten the labor hour consumption.

The overturning system comprises a driving rolling device and a driven rolling device, wherein the driving rolling device and the driven rolling device respectively comprise a support frame and an embracing ring, the support frame is provided with two rollers which are oppositely arranged, the embracing ring is clamped between the two rollers and comprises two semicircular rings, one ends of the two semicircular rings are hinged with each other, the other ends of the two semicircular rings are fixedly connected through a fastener, a clamping mechanism which is radially arranged is arranged in the embracing ring, the embracing ring of the driving rolling device and the embracing ring of the driven rolling device are fixedly connected through a connecting rod, a rack which is circumferentially arranged is fixedly arranged on the embracing ring of the driving rolling device, a gear which is meshed with the rack is arranged on the support frame of the driving rolling device, and the gear is driven through a motor.

The turnover system comprises a support frame, a screw rod, a screw block and a guide rail, wherein the support frame comprises two support plates which are oppositely arranged, the two rollers are respectively and rotatably arranged between the two support plates, the two rollers are respectively positioned at two ends of the support plates, a screw rod elevator is arranged below the support frame, a screw rod of the screw rod elevator is fixedly connected with the support frame, the screw rod elevator is fixedly arranged on a steel wire rope shock absorber, a bottom plate is arranged below the steel wire rope shock absorber, the bottom of the steel wire rope shock absorber is provided with the slide block, the slide block is slidably arranged on the guide rail, the screw rod is further rotatably arranged on the bottom plate and is parallel to the guide rail, the screw block is in threaded connection with the screw rod, and the screw block is fixedly arranged at the bottom of the steel wire rope shock absorber.

According to the turnover system, two spiral lead screw lifters are arranged below the supporting frame, worms of the two spiral lead screw lifters are fixedly connected through a coupler, two fixing plates are fixedly connected between the bottoms of two supporting plates of the supporting frame respectively, and lead screws of the two spiral lead screw lifters are fixedly connected with the two fixing plates respectively.

According to the turnover system, the spiral lead screw lifter and the steel wire rope shock absorber which are arranged below the support frame are provided with the baffle plates at the peripheries, the baffle plates are fixedly connected onto the support frame, a worm of the spiral lead screw lifter which is arranged below the support frame penetrates through the baffle plates and then is fixedly connected with the first crank, the baffle plates are provided with strip-shaped through holes through which the worms penetrate, and the strip-shaped through holes are arranged along the vertical direction.

According to the turnover system, the motor drives the gear through the speed reducer, the output shaft of the motor is fixedly connected with the input shaft of the speed reducer, the output shaft of the speed reducer is fixedly connected with the gear, and the motor and the speed reducer are fixedly arranged on the supporting plate of the active rolling device, which is arranged opposite to the rack.

The overturning system comprises a clamping ring, a clamping plate, a cylinder, an electric cylinder or a hydraulic cylinder, wherein the clamping plate is arranged in the clamping ring, and the clamping plate is connected with the piston rod of the cylinder, the electric cylinder or the hydraulic cylinder through a spherical hinge.

The overturning system comprises more than two clamping mechanisms in an embracing ring, wherein the more than two clamping mechanisms are uniformly arranged at intervals along the circumferential direction of the embracing ring, each clamping mechanism comprises a support, the supports are fixedly arranged on the inner annular wall of the embracing ring, outer sleeves arranged along the radial direction of the embracing ring are fixedly arranged on the supports, threaded shafts are rotatably arranged in the outer sleeves, one ends of the outer sleeves, close to the circle center of the embracing ring, are sleeved with inner sleeves, the inner sleeves are sleeved on the threaded shafts, the inner sleeves and the threaded shafts are in threaded connection, sliding grooves arranged in the axial direction are formed in the outer cylinder wall of each inner sleeve, bolts are arranged on the cylinder wall of each outer sleeve and are inserted into the sliding grooves, and the inner sleeves are connected with clamping plates through spherical hinges.

According to the turnover system, the guide rails on the two bottom plates are arranged perpendicular to each other, the guide rail on one bottom plate is arranged parallel to the connecting rod, and the guide rail on the other bottom plate is arranged perpendicular to the connecting rod.

According to the turnover system, the second crank is fixedly connected to the screw.

The invention discloses a turnover system, wherein six clamping mechanisms are arranged in a hoop.

The turning system is different from the prior art in that when the turning system is used, the turning system is placed in a wind tunnel, then the fastening pieces on the two embracing rings are detached, the two embracing rings are opened, the airplane model is placed in the two embracing rings and the two embracing rings are closed, then the closed states of the two embracing rings are locked by the fastening pieces respectively, and then the airplane model is clamped by the clamping mechanism (the head of the airplane is positioned in one embracing ring and clamped by the clamping mechanism of the embracing ring, and the tail of the airplane is positioned in the other embracing ring and clamped by the clamping mechanism of the embracing ring). According to the actual test requirements, the position of the turnover system can be adjusted to different heights (if the turnover system is placed on a lifting platform, the position height of the turnover system is adjusted through the lifting platform, or the position height of the turnover system is adjusted through the turnover system placed on bases with different heights), after the turnover system reaches the required height, the turnover system rotates through a motor driving gear, and due to the fact that a gear is meshed with a rack, the embracing ring of the driving rolling device rotates (due to the fact that the embracing ring is clamped between two rollers, the embracing ring can rotate under the driving of the gear), under the transmission effect of a connecting rod, the embracing ring of the driven rolling device also rotates synchronously along with the embracing ring of the driving rolling device, so that an airplane model also rotates (namely, when the airplane model rotates to a proper turnover position, the motor is turned off, and then a blowing test can be carried out. Therefore, the overturning system has compact structure and size and good operation adaptability, and can greatly reduce the labor hour consumption. The invention can realize the conversion and turning over of the abdominal bracing and the back bracing of different types of airplane models in the wind tunnel.

The invention will be further explained with reference to the drawings.

Drawings

FIG. 1 is a first schematic structural view of the flipping system of the present invention (the clasps are in a closed state);

FIG. 2 is a schematic structural diagram of the turning system of the present invention (the hoop is in an open state);

FIG. 3 is a first schematic structural view (with the hoop in a closed state) of the active roll device of the present invention;

FIG. 4 is a schematic structural diagram of the active rolling device of the present invention (with the hoop in an open state);

FIG. 5 is a view showing an installation state of the motor and the decelerator (hiding a shielding plate at the periphery of the motor and the decelerator) in the present invention;

FIG. 6 is a diagram showing the engagement state of the gear and the rack in the present invention (hiding the motor, the shielding plate around the reducer and the supporting plate for fixing the reducer);

FIG. 7 is a schematic structural view of the active rolling device of the present invention (hiding the motor, the reducer and the shielding plate around the reducer, and hiding part of the shielding plate);

FIG. 8 is a schematic structural diagram of the active rolling device of the present invention (hiding the motor, the reducer and the shielding plate around the reducer, and hiding part of the shielding plate);

FIG. 9 is a schematic structural view of a base plate of the active roll device of the present invention;

FIG. 10 is a first schematic view of a driven tumbling device according to the present invention;

FIG. 11 is a second schematic structural view (with a portion of the blind) of the driven cascading device of the present invention;

FIG. 12 is a third schematic view (with the partial baffles hidden) of the driven cascading device of the present invention;

FIG. 13 is a schematic view of a base plate of the slave cascading device of the present invention;

FIG. 14 is a first schematic structural view of a clamping mechanism according to the present invention;

FIG. 15 is a second schematic structural view of the clamping mechanism of the present invention (hidden outer sleeve);

FIG. 16 is a third schematic structural view of the clamping mechanism of the present invention (hiding the outer sleeve and the inner sleeve);

fig. 17 is a state diagram of the clamping mechanism of the present invention clamping the airplane model.

Detailed Description

As shown in fig. 1 and fig. 2-17, the turning system of the present invention includes a driving rolling device 21 and a driven rolling device 42, wherein the driving rolling device 21 and the driven rolling device 42 both include a support frame 9 and a hoop 12, the support frame 9 is provided with two rollers 14 arranged oppositely, the hoop 12 is clamped between the two rollers 14, the hoop 12 includes two semi-circular rings, one end of each of the two semi-circular rings is hinged to each other, the other end of each of the two semi-circular rings is fixedly connected through a fastener 11 (such as a bolt), a radially arranged clamping mechanism 10 is provided in the hoop 12, the hoop 12 of the driving rolling device 21 and the hoop 12 of the driven rolling device 42 are fixedly connected through a connecting rod 13, a circumferentially arranged rack 22 is fixedly provided on the hoop 12 of the driving rolling device 21, the support frame 9 of the driving rolling device 21 is provided with a gear 35 engaged with the rack 22, the gear 35 is driven by the motor 33.

The driving rolling device 21 is provided with a motor 33, a gear 35 and a rack 22, the motor 33 drives the gear 35 to rotate, and since the rack 22 is meshed with the gear 35 and the rack 22 is arranged along the circumferential direction of the hoop 12 of the driving rolling device 21, when the gear 35 rotates, the hoop 12 of the driving rolling device 21 also rotates under the support of the two rollers 14, and under the transmission action of the connecting rod 13, the hoop 12 of the driven rolling device 42 also rotates under the support of the two rollers 14.

As shown in fig. 1 and 2, when the fastening member 11 between the two semicircular rings of the hoop 12 is removed, the hoop 12 can be opened, that is, the upper semicircular ring surrounds the hinge end (the hinge end is the end where the two semicircular rings are hinged to each other), so that the upper semicircular ring is gradually away from the lower semicircular ring until the hoop 12 is rotated to the position shown in fig. 2, and at this time, the hoop 12 is in an opened state; when the clasping rings 12 are closed, the upper semicircular ring is rotated reversely to be gradually close to the lower semicircular ring until the clasping rings 12 are rotated to the position shown in fig. 1, at this time, the clasping rings 12 are in a closed state, and then the closed states of the two clasping rings 12 are locked by using the fasteners 11 respectively.

As shown in fig. 1 and fig. 2, the connecting rod 13 is formed by splicing two sections of rigid structural members, and is used for connecting the two hoops 12 in the overturning process of the airplane model 51, specifically, the connecting rod is connected with the hoops 12 in a bolt connection manner, so as to complete the improvement of the structural rigidity of the equipment in the overturning process of the airplane model 51.

As shown in fig. 1, and in conjunction with fig. 2-8 and 10-12, the turning system of the present invention, wherein the supporting frame 9 comprises two supporting plates arranged oppositely, two rollers 14 are rotatably mounted between the two supporting plates through bearings, and the two rollers 14 are located at two ends of the supporting plates. The height of the two ends of the supporting plate is higher than that of the middle part. A screw rod lifter 36 is arranged below the support frame 9, a screw rod 39 of the screw rod lifter 36 is fixedly connected with the support frame 9, the screw rod lifter 36 is fixedly arranged on a steel wire rope shock absorber 38, a bottom plate 24 is arranged below the steel wire rope shock absorber 38, a sliding block 29 is arranged at the bottom of the steel wire rope shock absorber 38, a guide rail 28 is arranged on the bottom plate 24, the sliding block 29 is slidably mounted on the guide rail 28, a screw rod 27 is further rotatably mounted on the bottom plate 24, two ends of the screw rod 27 are respectively mounted on the bottom plate 24 through bearing seats 25, the screw rod 27 is arranged in parallel with the guide rail 28, a screw block 41 is in threaded connection with the screw rod 27, and the screw block 41 is fixedly arranged at the bottom of the steel wire rope shock absorber 38.

The wire rope damper 38 is conventional and its specific structure will not be described in detail. The steel wire rope shock absorber 38 is used for providing flexible support for the airplane model 51 during overturning, and preventing the airplane model 51 from being damaged due to overlarge rigidity of the overturning system during overturning.

When the screw 27 rotates, the screw block 41 can move back and forth along the axial direction of the screw 27 (because the screw block 41 is fixed at the bottom of the wire rope damper 38, it cannot rotate along with the screw 27, but can only move back and forth along the axial direction of the screw 27), and under the driving of the screw block 41, the wire rope damper 38, the screw elevator 36, the support frame 9 and the hoop 12 can slide back and forth along the guide rail 28 through the slider 29.

According to the turnover system, two spiral lead screw lifters 36 are arranged below the supporting frame 9, worms 37 of the two spiral lead screw lifters 36 are fixedly connected through a coupler, two fixing plates 40 are fixedly connected between the bottoms of two supporting plates of the supporting frame 9 respectively, and lead screws 39 of the two spiral lead screw lifters 36 are fixedly connected with the two fixing plates 40 respectively.

The spiral lead screw lifter 36 is a prior art, and comprises a worm 37, a worm wheel and a lead screw 39, wherein the worm 37, the worm wheel and the lead screw 39 are arranged in a box body, the worm 37 and the lead screw 39 both penetrate out of the box body, when the worm 37 rotates, the worm wheel meshed with the worm 37 also rotates, and as the lead screw 39 is in threaded connection with the worm wheel and the lead screw 39 is fixedly connected with a fixing plate 40 at the bottom of a supporting plate, when the worm wheel rotates, the lead screw 39 can do lifting movement. The relative position in the vertical direction between the two hoops 12 and the airplane model 51 can be adjusted by the screw elevator 36 so that the two hoops 12 are coaxially arranged.

As shown in fig. 3, and as shown in fig. 4-8 and 10-12, in the turnover system of the present invention, a baffle 30 is disposed on the peripheries of a screw elevator 36 and a wire rope damper 38 below the supporting frame 9, the baffle 30 is fixedly connected to a supporting plate of the supporting frame 9, a worm 37 of the screw elevator 36 below the supporting frame 9 penetrates through the baffle 30 and then is fixedly connected to a first crank 31, a strip through hole 32 through which the worm 37 penetrates is formed in the baffle 30, and the strip through hole 32 is disposed in the up-down direction.

As shown in fig. 5, and as shown in fig. 6-8 and 10-12, since the worms 37 of the two screw lifters 36 below the supporting frame 9 are fixedly connected by the coupling, when the first crank 31 is rotated, the worms 37 of the two screw lifters 36 are simultaneously rotated, that is, the screws 39 of the two screw lifters 36 perform synchronous lifting movement, so that the supporting frame 9 and the clasps 12 on the supporting frame 9 perform lifting movement. When the supporting frame 9 and the embracing ring 12 perform lifting movement together, the baffle 30 fixedly connected with the supporting frame 9 also performs lifting movement along with the supporting frame 9, so that the strip-shaped through hole 32 formed in the baffle 30 also performs lifting movement relative to the worm 37 penetrating through the through hole, namely, under the action of the strip-shaped through hole 32, the worm 37 penetrating through the baffle 30 cannot block the baffle 30 to perform lifting movement along with the supporting frame 9.

As shown in fig. 5 and 6, the turnover system of the present invention, wherein the motor 33 drives the gear 35 through the reducer 34, an output shaft of the motor 33 is fixedly connected to an input shaft of the reducer 34, an output shaft of the reducer 34 is fixedly connected to the gear 35, the motor 33 and the reducer 34 are fixedly disposed on a support plate of the active roll device 21 disposed opposite to the rack 22 (specifically, the reducer 34 is fixedly disposed on the support plate, and since the motor 33 is fixedly connected to the reducer 34, the motor 33 is also fixedly disposed on the support plate through the reducer 34), the output shaft of the reducer 34 extends to between the two support plates after passing through the support plates, and is fixedly connected to the gear 35, and the gear 35 is disposed between the two support plates. As shown in fig. 3 and 4, a shielding plate 23 is disposed around the motor 33 and the reducer 34, and the shielding plate 23 is fixedly connected to the supporting frame 9 of the active rolling device 21, specifically, the supporting plate of the supporting frame 9.

As shown in fig. 9 and 13, the turning system of the present invention, wherein the guide rails 28 on the two base plates 24 are arranged perpendicular to each other, the guide rail 28 on one of the base plates 24 is arranged parallel to the connecting rod 13, the guide rail 28 on the other base plate 24 is arranged perpendicular to the connecting rod 13, and the second crank 26 is fixedly connected to the screw 27. In the present embodiment, the guide rail 28 on the bottom plate 24 of the active rolling device 21 is arranged parallel to the connecting rod 13, and the guide rail 28 on the bottom plate 24 of the passive rolling device 42 is arranged perpendicular to the connecting rod 13.

When the second crank 26 of the active rolling device 21 is rotated to rotate the screw 27, the wire rope damper 38, the screw elevator 36, the support frame 9 and the clasps 12 in the active rolling device 21 all slide along the guide rail 28 parallel to the connecting rod 13, that is, when the connecting rod 13 is fixedly connected between the two clasps 12, the distance between the two clasps 12 can be adjusted by rotating the second crank 26 of the active rolling device 21, so that the distance is matched with the length of the connecting rod 13, thereby facilitating the installation of the connecting rod 13.

Similarly, when the second crank 26 of the driven rolling device 42 is rotated to rotate the screw 27, the wire rope shock absorber 38, the screw elevator 36, the support frame 9 and the clasping rings 12 in the driven rolling device 42 all slide along the guide rail 28 perpendicular to the connecting rod 13, that is, the coaxiality between the two clasping rings 12 can be adjusted by rotating the second crank 26 of the driven rolling device 42, and finally the two clasping rings 12 are coaxially arranged, so that the installation of the connecting rod 13 can be facilitated, and the installation and later overturning of the airplane model 51 can be facilitated.

As shown in fig. 1, and in conjunction with fig. 2-13, the active and passive

tumbling devices

21, 42 differ in structure in two ways: (1) the driving rolling device 21 is provided with a motor 33, a speed reducer 34, a gear 35 and a rack 22, and under the driving of the motor 33, through the transmission of the speed reducer 34, the gear 35 and the rack 22, the hoop 12 of the driving rolling device 21 can rotate, so as to drive the hoop 12 of the driven rolling device 42 to rotate; (2) the arrangement directions of the guide rails 28 on the bottom plates 24 of the active rolling device 21 and the driven rolling device 42 are different, namely the guide rails 28 on the bottom plate 24 of the active rolling device 21 are arranged in parallel to the connecting rod 13, so that the distance between the two embracing rings 12 can be conveniently adjusted; the guide rail 28 on the bottom plate 24 of the driven rolling device 42 is arranged perpendicular to the connecting rod 13, so that the coaxiality between the two hoops 12 can be conveniently adjusted. Except for the two differences, the active and

passive rolling devices

21 and 42 have the same structure.

As shown in fig. 1, and as shown in fig. 2 to 8, 10 to 12, and 14 to 16, the present invention provides an inversion system, wherein the number of the clamping mechanisms 10 in the hoop 12 is two or more, and the two or more clamping mechanisms 10 are uniformly spaced along the circumference of the hoop 12. In the present embodiment, six clamping mechanisms 10 are provided in each hoop 12, that is, three clamping mechanisms 10 are respectively provided in two semicircular rings of the hoop 12. The clamping mechanism 10 comprises a support 48, the support 48 is fixedly arranged on an inner annular wall of the embracing ring 12, an outer sleeve 45 radially arranged along the embracing ring 12 is fixedly arranged on the support 48, a threaded shaft 46 (the threaded shaft 46 and the outer sleeve 45 are coaxially arranged) is rotatably arranged in the outer sleeve 45 through a bearing 50, an inner sleeve 44 is sleeved at one end, close to the circle center of the embracing ring 12, of the outer sleeve 45, the inner sleeve 44 is sleeved on the threaded shaft 46, the inner sleeve 44 is in threaded connection with the threaded shaft 46, the inner sleeve 44 and the threaded shaft 46 are also coaxially arranged, a sliding groove 49 axially arranged is formed in the outer sleeve wall of the inner sleeve 44, a bolt 47 is formed in the sleeve wall of the outer sleeve 45, the bolt 47 is inserted into the sliding groove 49, and a clamping plate 43 is connected to the inner sleeve 44 through a ball hinge. Because the inner sleeve 44 and the clamping plate 43 are connected through the spherical hinge, the position of the clamping plate 43 relative to the inner sleeve 44 can be adjusted, the flexibility of the clamping plate 43 in clamping is enhanced, and different types of airplane models 51 can be clamped.

As shown in fig. 17, when the clamping mechanism 10 is used, the threaded shaft 46 is rotated, and since the inner sleeve 44 is threadedly fitted on the threaded shaft 46 and the inner sleeve 44 is restricted from circumferential rotation by the latch 47 and the slide groove 49, when the threaded shaft 46 is rotated, the inner sleeve 44 moves back and forth along the axial direction of the threaded shaft 46, i.e., the inner sleeve 44 can extend out of or retract into the outer sleeve 45. When the airplane model 51 needs to be clamped, the airplane model 51 is placed in the embracing ring 12, then the threaded shaft 46 is rotated forward, the inner sleeve 44 extends out of the outer sleeve 45 until the clamping plate 43 on the inner sleeve 44 abuts against the airplane model 51, and the airplane model 51 can be clamped; when the model airplane 51 needs to be released, the threaded shaft 46 is rotated reversely, so that the inner sleeve 44 retracts into the outer sleeve 45, and the clamping plate 43 on the inner sleeve 44 is separated from the model airplane 51, so that the model airplane 51 can be taken out of the hoop 12.

Of course, in addition to the above-described structure of the chucking mechanism 10, the chucking mechanism 10 may also adopt the following structure: fixture 10 is cylinder, electronic jar or pneumatic cylinder, electronic jar or pneumatic cylinder are along embracing the radial arrangement of ring 12, the cylinder body of cylinder, electronic jar or pneumatic cylinder is fixed to be located on embracing ring 12, the piston rod of cylinder, electronic jar or pneumatic cylinder is arranged towards the centre of a circle of embracing ring 12, be connected with grip block 43 through the ball pivot on the piston rod of cylinder, electronic jar or pneumatic cylinder. Six air cylinders, electric cylinders or hydraulic cylinders are arranged in each embracing ring 12, and the six air cylinders, electric cylinders or hydraulic cylinders are uniformly arranged at intervals along the circumferential direction of the embracing ring 12, namely, three air cylinders, electric cylinders or hydraulic cylinders are respectively arranged in two semicircular rings of the embracing ring 12. When the airplane model 51 needs to be clamped, the piston rod of the air cylinder, the electric cylinder or the hydraulic cylinder is controlled to extend out until the clamping plate 43 on the piston rod abuts against the airplane model 51; conversely, when the airplane model 51 needs to be released, the piston rod of the control cylinder, the electric cylinder or the hydraulic cylinder retracts, and the clamping plate 43 on the piston rod is separated from the airplane model 51. Because the piston rod of the air cylinder, the electric cylinder or the hydraulic cylinder is connected with the clamping plate 43 through the spherical hinge, the position of the clamping plate 43 relative to the piston rod can be adjusted, the flexibility of the clamping plate 43 in clamping is enhanced, and airplane models 51 of different types can be clamped.

As shown in fig. 17, when the present invention is used, the turning system is placed in the wind tunnel, then the fastening members 11 on the two clasps 12 are removed, the two clasps 12 are opened, the airplane model 51 is placed in the two clasps 12 and the two clasps 12 are closed, then the closed state of the two clasps 12 is locked by using the fastening members 11, and then the airplane model 51 is clamped by the clamping mechanisms 10 (the head of the airplane is located in one clasps 12 and clamped by the clamping mechanisms 10 of the clasps 12, and the tail of the airplane is located in the other clasps 12 and clamped by the clamping mechanisms 10 of the clasps 12). According to the actual experiment requirement, the position of the turning system can be adjusted to different heights (for example, the turning system is placed on a lifting platform, the position height of the turning system is adjusted through the lifting platform, or the turning system is placed on a base with different heights to adjust the position height of the turning system), after the turning system reaches the required height, the gear 35 is driven to rotate through the motor 33, the gear 35 is meshed with the rack 22, so the hoop 12 of the active rolling device 21 rotates (the hoop 12 can rotate under the driving of the gear 35 because the hoop 12 is clamped between the two rollers 14), under the transmission action of the connecting rod 13, the hoop 12 of the driven rolling device 42 also rotates synchronously along with the hoop 12 of the active rolling device 21, so the airplane turning model 51 also rotates (namely), when the turning system rotates to the proper position, the motor 33 is turned off, the blow test can then be performed. Therefore, the overturning system has compact structure and size and good operation adaptability, and can greatly reduce the labor hour consumption. The invention can realize the conversion and turning of the abdominal bracing and the back bracing of different types of airplane models 51 in the wind tunnel, namely realize the 180-degree turning of the airplane models 51.

According to the invention, the connecting rod 13 can be removed before entering the wind tunnel, then the active rolling device 21 and the driven rolling device 42 respectively enter the wind tunnel through the maintenance inlet of the wind tunnel, and in order to adapt to the height and width of the maintenance inlet of the wind tunnel, the structure of the hoop 12 is in an open state.

The invention has compact integral structure and high integration, and can realize the clamping of airplane models 51 with different sizes by adjusting the clamping mechanism 10, thereby realizing the turnover work of the airplane models 51 with different sizes, therefore, the invention has good adaptability; the invention has good operability, and can realize the quick assembly and disassembly of the airplane model 51 in the using process; the turning-over device has compact integral structure and size, occupies smaller space and saves more operation cost compared with the turning-over device of the existing airplane model 51.

The invention has the following beneficial effects:

(1) the invention has compact structure and high integration degree;

(2) the invention has simpler and more convenient operation, can improve the convenience of the turning-over work of the airplane model 51 in the wind tunnel and further improves the working efficiency;

(3) when the turning-over operation of the airplane model 51 is carried out, the turning-over operation of the airplane model 51 in the wind tunnel can be realized only through the self function of the turning-over operation device without operating the wind tunnel step, so that the manpower consumption is reduced, and the operation cost is saved.

It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. A flipping system, characterized by: including initiative roll-over device and driven roll-over device, initiative roll-over device and driven roll-over device all include the support frame and embrace the ring, be equipped with two mutual arrangement's roller on the support frame, embrace and encircle the joint between two rollers, the armful includes two semicircle rings, two the one end of semicircle ring is articulated each other, two the other end of semicircle ring passes through fastener fixed connection, be equipped with radial fixture who arranges in the armful ring, the armful of initiative roll-over device encircles and passes through connecting rod fixed connection between the armful of driven roll-over device, the fixed rack that is equipped with circumference and arranges in the armful of initiative roll-over device, be equipped with on the support frame of initiative roll-over device with rack toothing's gear, the gear passes through motor drive.

2. The flipping system of claim 1, wherein: the support frame comprises two support plates which are oppositely arranged, the two rollers are respectively rotatably installed between the two support plates, the two rollers are respectively located at two ends of the support plates, a spiral lead screw lifter is arranged below the support frame, a lead screw of the spiral lead screw lifter is fixedly connected with the support frame, the spiral lead screw lifter is fixedly arranged on a steel wire rope shock absorber, a bottom plate is arranged below the steel wire rope shock absorber, a sliding block is arranged at the bottom of the steel wire rope shock absorber, a guide rail is arranged on the bottom plate, the sliding block is slidably installed on the guide rail, a screw rod is further rotatably installed on the bottom plate and is parallel to the guide rail, a screw block is in threaded connection with the screw rod, and the screw block is fixedly arranged at the bottom of the steel wire rope shock absorber.

3. The flipping system of claim 2, wherein: the support frame is characterized in that two spiral lead screw lifters are arranged below the support frame, worms of the two spiral lead screw lifters are fixedly connected through a coupler, two fixing plates are fixedly connected between the bottoms of two supporting plates of the support frame respectively, and lead screws of the two spiral lead screw lifters are fixedly connected with the two fixing plates respectively.

4. The flipping system of claim 3, wherein: the spiral lead screw lifter comprises a support frame, a spiral lead screw lifter and a steel wire rope shock absorber, and is characterized in that baffle plates are arranged on the peripheries of the spiral lead screw lifter and the steel wire rope shock absorber below the support frame, the baffle plates are fixedly connected to the support frame, a worm of the spiral lead screw lifter below the support frame penetrates through the baffle plates and then is fixedly connected with a first crank, a strip-shaped through hole for the worm to penetrate through is formed in each baffle plate, and the strip-shaped through holes are arranged in the vertical direction.

5. The flipping system of claim 4, wherein: the motor drives the gear through the speed reducer, an output shaft of the motor is fixedly connected with an input shaft of the speed reducer, an output shaft of the speed reducer is fixedly connected with the gear, and the motor and the speed reducer are fixedly arranged on a supporting plate of the active rolling device, wherein the supporting plate is opposite to the rack.

6. The flipping system of claim 5, wherein: the clamping mechanism in the embracing ring is set to be more than two, and the clamping mechanism more than two is arranged along the even interval of circumference of embracing the ring, clamping mechanism is cylinder, electronic jar or pneumatic cylinder, electronic jar or pneumatic cylinder are arranged along the radial of embracing the ring, the cylinder body of cylinder, electronic jar or pneumatic cylinder is fixed to be located on the embracing the ring, the piston rod of cylinder, electronic jar or pneumatic cylinder is arranged towards the centre of a circle of embracing the ring, be connected with the grip block through the ball pivot on the piston rod of cylinder, electronic jar or pneumatic cylinder.

7. The flipping system of claim 5, wherein: the clamping mechanism in the embracing ring is set to be more than two, the clamping mechanism more than two is arranged along the even interval of circumference of embracing the ring, clamping mechanism includes the support, the support is fixed to be located on the interior rampart of embracing the ring, the fixed outer sleeve that is equipped with along embracing the radial arrangement of ring on the support, the threaded shaft is installed to the outer sleeve internal rotation, the outer sleeve be close to embrace ring centre of a circle one end cover and be equipped with the inner skleeve, the inner skleeve suit in the threaded shaft, be threaded connection between inner skleeve and the threaded shaft, be equipped with the spout that the axial was arranged on the outer tube wall of inner skleeve, be equipped with the bolt on the section of thick bamboo wall of outer sleeve, the bolt inserts in the spout, be connected with the grip block through the ball pivot on the inner skleeve.

8. The flipping system of claim 6 or 7, wherein: the guide rails on the two bottom plates are arranged perpendicular to each other, the guide rail on one bottom plate is arranged parallel to the connecting rod, and the guide rail on the other bottom plate is arranged perpendicular to the connecting rod.

9. The flipping system of claim 8, wherein: and a second crank is fixedly connected to the screw rod.

10. The flipping system of claim 9, wherein: six clamping mechanisms are arranged in the embracing ring.