CN109765027B - Quadrilateral mechanism type large attack angle supporting system - Google Patents
Quadrilateral mechanism type large attack angle supporting system Download PDFInfo
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- CN109765027B CN109765027B CN201910167724.8A CN201910167724A CN109765027B CN 109765027 B CN109765027 B CN 109765027B CN 201910167724 A CN201910167724 A CN 201910167724A CN 109765027 B CN109765027 B CN 109765027B
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Abstract
The quadrilateral mechanism type large-attack-angle supporting system is difficult to avoid the coupling phenomenon of attack angle and sideslip angle because the used large-attack-angle supporting system cannot continuously change angles in the wind tunnel test process of the aircraft and has large blocking degree. The invention discloses a sliding mechanism, which is characterized in that a sliding mechanism is arranged in a sideslip mechanism, a main electric cylinder and an auxiliary electric cylinder are arranged on the sliding mechanism in parallel, the main electric cylinder and the auxiliary electric cylinder are fixedly connected, a tail rod is arranged above the main electric cylinder, the main electric cylinder and the auxiliary electric cylinder are respectively hinged with the tail rod, a test model is arranged at the front end of the tail rod, the main electric cylinder and the auxiliary electric cylinder drive the tail rod to reciprocate in the vertical direction, the main electric cylinder and the auxiliary electric cylinder are driven by the sliding mechanism to do horizontal reciprocating rectilinear motion on the sideslip mechanism, and the main electric cylinder, the auxiliary electric cylinder and the sliding mechanism are driven by the sideslip mechanism to do horizontal rotation motion. The invention is used for the wind tunnel test of the aircraft.
Description
Technical field:
the invention relates to a supporting system, in particular to a quadrilateral mechanism type large-attack-angle supporting system.
The background technology is as follows:
wind tunnel testing refers to an aerodynamic experimental method of placing a model of an aircraft or other object in a wind tunnel, studying the flow of gas and its interactions with the model, to understand the aerodynamic characteristics of the actual aircraft or other object. In the wind tunnel test process of an aircraft, most of applied large-attack-angle support systems are half-bent-blade support systems, full-bent-blade support systems and hydraulic support systems. However, the above-mentioned support system generally has the following problems:
1. the processing and manufacturing cost is high, and the construction period is long;
2. the angle change can not be continuously carried out during the test, and the required attack angle range is realized by replacing the model support rod, so the test efficiency is lower;
3. the coupling phenomenon exists between the attack angle and the sideslip angle, and mutual interference is caused, so that the model angle operation is not accurate enough;
4. the system blocking degree is large, which is an important index for measuring whether the test system meets the test. It can be seen that the existing support system structure and use has inconvenience and defects, and needs further improvement.
The invention comprises the following steps:
to solve the above-mentioned problems in the background art, an object of the present invention is to provide a quadrilateral-mechanism-type large-attack-angle support system.
The quadrilateral mechanism type large attack angle supporting system comprises a tail rod, a main electric cylinder, an auxiliary electric cylinder, a sliding mechanism and a sideslip mechanism, wherein the sliding mechanism is arranged in the sideslip mechanism, the main electric cylinder and the auxiliary electric cylinder are arranged on the sliding mechanism in parallel, the main electric cylinder and the auxiliary electric cylinder are fixedly connected, the tail rod is arranged above the main electric cylinder, the main electric cylinder and the auxiliary electric cylinder are respectively hinged with the tail rod, a test model is arranged at the front end of the tail rod, the main electric cylinder and the auxiliary electric cylinder drive the tail rod to make reciprocating motion in the vertical direction, the main electric cylinder and the auxiliary electric cylinder make horizontal reciprocating rectilinear motion on the sideslip mechanism under the driving of the sideslip mechanism, and the main electric cylinder, the auxiliary electric cylinder and the sliding mechanism make horizontal rotary motion under the driving of the sideslip mechanism.
As a preferable scheme: the sliding mechanism comprises a supporting seat, two first linear guide rails and two first sliding blocks, wherein the supporting seat is arranged on a lower rotary table of the sideslip mechanism, the two first sliding blocks are arranged on the supporting seat in parallel, one first linear guide rail is correspondingly arranged above each first sliding block, and each first sliding block is in sliding fit with the corresponding first linear guide rail.
As a preferable scheme: the electric cylinder is characterized by further comprising a sealing device, wherein the bottom of the sealing device is arranged on the supporting seat of the sliding mechanism and is positioned between the two sliding blocks, the top of the sealing device is arranged at the top of the sideslip mechanism, and the main electric cylinder sequentially penetrates through the sliding mechanism and the sealing device from bottom to top.
As a preferable scheme: the utility model provides a sealing device, including the mechanism that sideslips, it has the upper shed to process on the mechanism that sideslips, the upper shed is used for sealing device's installing port, sealing device includes the roller shutter, the roller shutter support, the seat is used in the torsional spring pivot, the pivot is used in the torsional spring, torsional spring and two closing plates, the torsional spring is used in the pivot fixed mounting in the seat is used in the torsional spring pivot, seat fixed mounting is in the one end department of supporting seat top surface is used in the torsional spring pivot, roller shutter support fixed mounting is in the other end department of supporting seat top surface, two closing plates from last to lower level setting up in the upper shed department, two closing plates respectively with the inside wall sliding fit of upper shed, processing respectively on every closing plate has the first through hole and the second through hole of cooperation main electric cylinder and vice electric cylinder, one of rolling up shutter is connected with the torsional spring through two closing plates, the other end of rolling shutter is connected with another through the axis on the roller shutter support the closing plate the other end is connected with the torsional spring.
As a preferable scheme: the structure of the main electric cylinder is the same as that of the auxiliary electric cylinder, the main electric cylinder comprises a main cylinder barrel and a main cylinder rod, and the main cylinder rod consists of a twenty-four-edge electric cylinder rod and an electric cylinder rod head.
As a preferable scheme: the included angle formed between the central axis of the main cylinder barrel and the plane of the sideslip mechanism is 60-90 degrees.
As a preferable scheme: the tail boom includes body of rod and connecting seat, and the front end processing of connecting seat has the mounting hole of cooperation body of rod, can dismantle with the one end of body of rod through the cooperation of connecting piece and be connected, and the other end of body of rod can be dismantled with the afterbody of test model and be connected.
As a preferable scheme: the main electric cylinder and the auxiliary electric cylinder are fixedly connected through the auxiliary electric cylinder seat, and a quadrilateral mechanism is formed by enclosing the connecting seat, the main electric cylinder, the auxiliary electric cylinder seat and the auxiliary electric cylinder.
As a preferable scheme: the novel electric cylinder also comprises a pipe body, a pull rod upper seat, a pull rod, a pull bolt and a pull rod lower seat, wherein the rectangular steel pipe, the pull rod upper seat, the pull rod, the pull bolt and the pull rod lower seat form a triangle mechanism with the main electric cylinder.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has scientific and reasonable structural design, and the tail rod, the main electric cylinder, the auxiliary electric cylinder, the sliding mechanism and the sideslip mechanism are mutually matched to form an arrangement structure of the quadrilateral mechanism matched with the main electric cylinder and the auxiliary electric cylinder, so that a large attack angle test of a test model can be realized, the blocking degree of a supporting system is reduced, and the continuous movement of the system can be realized.
2. The invention has wide attack angle range, can realize any angle change of attack angle within the range of-15 degrees to 110 degrees, and has simple and flexible operation.
3. The blocking degree of the invention is small, and the blocking degree of the invention is less than 3 percent according to the repeated experimental calculation of a prototype.
4. The invention can ensure that the rigidity and the stability of the whole system are high through the arrangement of the quadrilateral mechanism.
5. The angle motion adjusting process has continuity, can realize various motion trends of horizontal rotation, horizontal movement and numerical movement, and is beneficial to more accurate data acquisition of the wind tunnel test of the aircraft.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic diagram of a front view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a schematic diagram of a triangle reinforcement mechanism in the present invention;
FIG. 4 is a schematic cross-sectional view of a front view of the connection between the sealing device and the sliding mechanism;
FIG. 5 is a sectional view of the main cylinder in front view;
FIG. 6 is a schematic diagram of the working principle of the present invention;
FIG. 7 is a schematic top view of the present invention with the test pattern, tail boom, primary and secondary electric cylinders removed.
In the figure, 1-test model; 2-tail rod; 2-1-rod body; 2-2-connecting seats; 3-connectors; 5-a first threaded pin; 6-a second threaded pin; 7-a main electric cylinder; 8-auxiliary electric cylinders; 9-a sliding mechanism; 10-sealing means; 11-sideslip mechanism; 11-1-an outer ring frame; 11-2-lower turntables; 12-a supporting seat; 13-reinforcing seats; 14-a tube body; 15-a pull rod upper seat; 16-pull rod; 17-tensioning bolts; 18-a pull rod lower seat; 19-an auxiliary electric cylinder seat; 20-pin shafts; 21-a sealing plate; 22-a roller shutter bracket; 23-rolling curtains; 25-a first bearing cap; 26-a first deep groove ball bearing; 27-a first nut; 28-a seat for a torsion spring rotating shaft; 29-a rotating shaft for the torsion spring; 30-torsion springs; 31-a screw; a 32-coupling; 33-a gear motor; 34-an electric motor; 35-thrust ball bearings; 36-a screw base; 37-cylinder body; 38-a second linear guide; 39-a second slider; 40-a second nut; 41-LM roller block; 42-twenty-four edge electric cylinder rod; 43-electric cylinder head; 44-a nut seat; 45-screw; 46-screw rod; 47-a second deep groove ball bearing; 48-a second bearing cap; 49-speed reducer; 50-a first linear guide; 51-a first slider;
the specific embodiment is as follows:
for the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, while other details not greatly related to the present invention are omitted.
The first embodiment is as follows: as shown in fig. 1, 2, 3, 4, 5, 6 and 7, the embodiment includes a tail rod 2, a main electric cylinder 7, a secondary electric cylinder 8, a sliding mechanism 9 and a sideslip mechanism 11, the sliding mechanism 9 is arranged in the sideslip mechanism 11, the main electric cylinder 7 and the secondary electric cylinder 8 are arranged on the sliding mechanism 9 in parallel, the main electric cylinder 7 and the secondary electric cylinder 8 are fixedly connected, the tail rod 2 is arranged above the main electric cylinder 7, the main electric cylinder 7 and the secondary electric cylinder 8 are hinged with the tail rod 2, a test model 1 is arranged at the front end of the tail rod 2, the main electric cylinder 7 and the secondary electric cylinder 8 drive the tail rod 2 to reciprocate in the vertical direction, the main electric cylinder 7 and the secondary electric cylinder 8 are driven by the sliding mechanism 9 to reciprocate horizontally on the sideslip mechanism 11, and the main electric cylinder 7, the secondary electric cylinder 8 and the sliding mechanism 9 are driven by the sideslip mechanism 11 to rotate horizontally.
When the main electric cylinder 7 and the auxiliary electric cylinder 8 drive the tail rod 2 to reciprocate in the vertical direction, the telescopic action of the main cylinder rod 7-1 of the main electric cylinder 7 and the auxiliary cylinder rod 7-2 of the auxiliary electric cylinder 8 drive the tail rod 2 to reciprocate up and down in the vertical direction (Y direction), and the tail rod 2 moves to drive the test model 1 to reciprocate up and down, so that the tail rod 2 and the test model 1 are relatively stationary.
When the main electric cylinder 7 and the auxiliary electric cylinder 8 are driven by the sliding mechanism 9 to do horizontal reciprocating rectilinear motion on the sideslip mechanism 11, the motion power is derived from the sliding mechanism 9, and the sliding mechanism 9 drives the main electric cylinder 7 and the auxiliary electric cylinder 8 to do reciprocating rectilinear motion in the horizontal direction X, so that the test model 1 is driven to do reciprocating rectilinear motion in the horizontal direction (X direction), the motion trend of the main electric cylinder 7 and the auxiliary electric cylinder 8 is the same, and the main electric cylinder 7 and the auxiliary electric cylinder 8 synchronously move.
When the main electric cylinder 7, the auxiliary electric cylinder 8 and the sliding mechanism 9 are driven by the sideslip mechanism 11 to perform horizontal rotation, the motion power is derived from the sideslip mechanism 11, the sideslip mechanism 11 is an existing mechanism, and the working principle of the sideslip mechanism is the prior art. The sideslip mechanism 11 comprises an outer ring frame 11-1 and a lower rotary table 11-2, the lower rotary table 11-2 is positioned in the outer ring frame 11-1 and is coaxially arranged, the sliding mechanism 9 is arranged on the lower rotary table 11-2, the main electric cylinder 7 and the auxiliary electric cylinder 8 are arranged on the sliding mechanism 9, the center point of the outer ring frame 11-1 of the lower rotary table 11-2 is used as a rotation center to horizontally rotate for 360 degrees, and accordingly the main electric cylinder 7, the auxiliary electric cylinder 8 and the sliding mechanism 9 are driven to synchronously rotate, and accordingly the test model 1 can horizontally rotate for 360 degrees.
The second embodiment is as follows: as shown in fig. 1, 2 and 5, the sliding mechanism 9 includes a support base 12, two first linear guide rails 50 and two first sliding blocks 51, the support base 12 is disposed on the lower turntable 11-2 of the sideslip mechanism 11, the two first sliding blocks 51 are disposed on the support base 12 in parallel, a first linear guide rail 50 is correspondingly disposed above each first sliding block 51, each first sliding block 51 is in sliding fit with the corresponding first linear guide rail 50, the first sliding blocks 51 drive the support base 12 to reciprocate along the length direction of the first linear guide rail 50, and any one first sliding block 51 of the two sliding blocks 51 is connected with a ball screw in a matched manner, and the ball screw is provided with a gear motor 33 in a matched manner.
The ball screw is the existing product, and it includes first bearing cap 25, first deep groove ball bearing 26, screw rod 31 and first nut 27, and the relation of connection and the work process of mutually supporting of first bearing cap 25, first deep groove ball bearing 26, screw rod 31 and first nut 27 are the same as prior art, and ball screw is connected with gear motor 33's output shaft through shaft coupling 32.
The sliding mechanism 9 is a compensating mechanism in the horizontal direction, and enhances the flexibility of movement of the main electric cylinder 7 and the auxiliary electric cylinder 8 in the horizontal direction. The sliding mechanism 9 can realize the compensation range of-500 mm+500mm in the horizontal direction through multiple experiments of a prototype, and has large range and easy operation.
And a third specific embodiment: the present embodiment is further defined as the first or second embodiment, and further includes a sealing device 10, wherein the bottom of the sealing device 10 is disposed on the support seat 12 of the sliding mechanism 9 and between the two sliding blocks 51, the top of the sealing device 10 is disposed on the top of the sideslip mechanism 11, the main electric cylinder 7 sequentially passes through the sliding mechanism 9 and the sealing device 10 from bottom to top, and the auxiliary electric cylinder 8 sequentially passes through the sliding mechanism 9 and the sealing device 10 from bottom to top.
In this embodiment, an upper opening is machined on the sideslip mechanism 11, the upper opening is used for a mounting opening of the sealing device 10, the sealing device 10 comprises a roller shutter 23, a roller shutter support 22, a seat 28 for a torsion spring rotating shaft, a rotating shaft 29 for a torsion spring, a torsion spring 30 and two sealing plates 21, the torsion spring 30 is fixedly installed on the seat 28 for the torsion spring rotating shaft through the rotating shaft 29 for the torsion spring, the seat 28 for the torsion spring rotating shaft is fixedly installed at one end of the top surface of the supporting seat 12, the roller shutter support 22 is fixedly installed at the other end of the top surface of the supporting seat 12, two sealing plates 21 are horizontally arranged at the upper opening from top to bottom, the two sealing plates 21 are respectively in sliding fit with the inner side wall of the upper opening, a first through hole and a second through hole matched with the main electric cylinder 7 and the auxiliary electric cylinder 8 are respectively machined in each sealing plate 21, the first through hole and the second through hole are all kidney-shaped holes, the first through hole and the second through hole are respectively the main cylinder rod 7-2 of the electric cylinder 7 and the through hole of the auxiliary cylinder rod 8-2 of the auxiliary electric cylinder 8, one end of the roller shutter 23 is fixedly installed at one end of the top surface of the supporting seat 12, the roller shutter 23 is fixedly installed at the other end of the sealing plate 21, the sealing plate 21 is connected with the roller shutter 30 through one sealing plate 21 and the other end 21 through the other end of the sealing plate 21, and the other end is connected with the other end of the sealing plate 21 through the other end 21 through the sealing plate 21. The sliding mechanism 9 horizontally moves to drive the rolling curtain 23 to drive the sealing plate 21 to move, and the torsion spring 30 provides restoring force for the reciprocating horizontal movement of the sealing plate 21, so that the sealing device 10 can synchronously move in cooperation with the main electric cylinder 7 and the auxiliary electric cylinder 8, the main cylinder rod 7-2 of the main electric cylinder 7 and the auxiliary cylinder rod 8-2 of the auxiliary electric cylinder 8 drive the sealing plate 21 to move along the horizontal direction, the rolling curtain 23 is driven to rotate on the rolling curtain support 22, the sealing of a system, namely the dynamic sealing effect is realized, and the smooth performance of a test is ensured.
The specific embodiment IV is as follows: the present embodiment is further defined as the first, second or third embodiment, and the structure of the main electric cylinder 7 is the same as that of the sub-electric cylinder 8, and the main electric cylinder 7 includes a main cylinder tube 7-1 and a main cylinder rod 7-2. The master cylinder rod 7-2 is composed of a twenty-four-edge electric cylinder rod 42 and an electric cylinder rod head 43, the master cylinder barrel 7-1 comprises a cylinder body 37, and further comprises a motor 34, a speed reducer 49, a second bearing cover 48, a second deep groove ball bearing 47, a thrust ball bearing 35, a screw rod seat 36, a screw rod 46, a screw nut 45, a screw nut seat 44, a cylinder body 37, a second linear guide 38, a second slider 39, a second nut 40 and an LM roller rolling block 41, the structure of the auxiliary electric cylinder 8 is the same as that of the master cylinder 7, the auxiliary electric cylinder 8 comprises an auxiliary cylinder barrel 8-1 and an auxiliary cylinder rod 8-2, and the master cylinder rod 7-2 and the auxiliary cylinder rod 8-2 are hinged with the tail rod 2 respectively. The main electric cylinder 7 is a product improved from the existing product, the electric cylinder rod in the existing product is replaced by a twenty-four-edge electric cylinder rod 42, and the setting positions of other components and the working process of the mutual matching are the same as those of the prior art.
Further, the included angle formed between the central axis of the main cylinder 7-1 and the plane of the sideslip mechanism 11 is in the range of 60-90 degrees. The main cylinder barrel 7-1 and the auxiliary cylinder barrel 8-1 are arranged in parallel, and the included angle formed between the central axis of the auxiliary cylinder barrel 8-1 and the plane of the sideslip mechanism 11 is also 60-90 degrees. The two included angles are changed independently and do not interfere with each other.
Fifth embodiment: the embodiment is further defined in the first, second, third or fourth embodiment, the tail rod 2 comprises a rod body 2-1 and a connecting seat 2-2, the longitudinal section of the connecting seat 2-2 is pistol-shaped, the front end of the connecting seat 2-2 is provided with a mounting hole matched with the rod body 2-1, the tail rod is detachably connected with one end of the rod body 2-1 through the matching of a connecting piece 3, the connecting piece 3 is a positive and negative nut, the tail rod is an existing product, and the other end of the rod body 2-1 is detachably connected with the tail part of the test model 1. The main electric cylinder 7 and the auxiliary electric cylinder 8 are fixedly connected through the auxiliary electric cylinder seat 19, the auxiliary electric cylinder 8 and the auxiliary electric cylinder seat 19 are connected through the pin shaft 20, and a quadrilateral mechanism is formed by enclosing the connecting seat 2-2, the main electric cylinder 7, the auxiliary electric cylinder seat 19 and the auxiliary electric cylinder 8, so that dynamic balance in the test process is ensured.
Specific embodiment six: the present embodiment is further defined by the first, second, third, fourth or fifth embodiment, and further includes a pipe body 14, a pull rod upper seat 15, a pull rod 16, a tension bolt 17, and a pull rod lower seat 18, where the rectangular steel pipe 14, the pull rod upper seat 15, the pull rod 16, the tension bolt 17, and the pull rod lower seat 18 form a triangle mechanism with the main electric cylinder 8, and the pipe body 14 is a rectangular steel pipe. The triangular mechanism can effectively enhance the longitudinal stability of the system.
Seventh embodiment: the present embodiment is further limited by the first, second, third, fourth, fifth or sixth embodiment, in this embodiment, the tail rod 2, the main electric cylinder 7, the auxiliary electric cylinder 8, the sliding mechanism 9 and the sideslip mechanism 11 are mutually matched to form a structural arrangement of the quadrilateral mechanism and the two electric cylinders, and the arrangement mode can ensure that the central position of the test model 1 is always unchanged and is located at the same position, for example, the G point position in fig. 1 is the central position of the test model 1, and the central position of the test model 1 can also be always located on the same vertical line with the wind tunnel center. The center position of the test model 1 is the only determined position obtained by aerodynamic calculation according to the specific construction of the model, and is the set position, and the acquisition process is the prior art. The process of acquiring the wind tunnel center is also the prior art.
Eighth embodiment: the present embodiment is further limited in that, in the sixth embodiment, when the pipe body 14 is a rectangular steel pipe, the rectangular steel pipe is fixedly connected to the support base 12 of the sliding mechanism 9, so that the movement function of the quadrilateral mechanism along with the sliding mechanism 9 is realized. The supporting seat 12 is fixed on the main electric cylinder 7, and the cantilever structure of the reinforcing seat 13 extends to the auxiliary electric cylinder 8 to form a sliding pair, so that the transverse rigidity of the reinforcing system is realized.
Detailed description nine: this embodiment is further defined as embodiment one, two, three, four, five, six, seven or eight, and the present invention has three revolute pairs and three revolute pairs, as shown in fig. 6, wherein the three revolute pairs are revolute pairs a, revolute pairs B and revolute pairs C respectively:
the revolute pair A is formed by hinging an auxiliary electric cylinder 8 with the tail rod 2 through a second threaded pin 6;
the revolute pair B is formed by hinging a main electric cylinder 7 with the tail rod 2 through a first threaded pin 5;
the revolute pair C is a revolute pair formed by the motor 34 and the speed reducer 49 matched with the auxiliary electric cylinder 8.
The positions of the three moving pairs are respectively a moving pair D, a moving pair E and a moving pair F:
the moving pair D is a moving pair formed by the mutual matching of the main electric cylinder 7 and the sliding mechanism 9;
the moving pair E is a moving pair formed by the mutual matching of the auxiliary electric cylinder 8 and the sliding mechanism 9;
the moving pair F is a moving pair formed by the mutual matching of the pipe body 14, the pull rod upper seat 15, the pull rod 16, the tension bolt 17, the pull rod lower seat 18 and the main electric cylinder 7, so that the cylinder barrel 7-1 of the main electric cylinder 7 can move up and down in the vertical direction to adjust the position. The formation of a plurality of moving pairs and a plurality of revolute pairs can effectively enhance the flexibility of the position change of the invention, and the invention has an integrated structure, and the change process is flexible, convenient and continuous without the need of dismantling and replacing the component for a plurality of times.
Detailed description ten: this embodiment is further defined in embodiment nine, wherein the degree of blockage is a ratio of a maximum frontal area of the wind tunnel test model to a cross-sectional area of the test section. The degree of blockage is used to describe the magnitude of the wind tunnel blockage effect. According to the invention, the blocking degree is less than 3% by combining data obtained through multiple experiments of a prototype with a related formula.
Eleventh embodiment: the embodiment is further limited by the first, second, third, fourth, fifth or sixth embodiment, and the positions and the connection modes among the tail rod 2, the main electric cylinder 7, the auxiliary electric cylinder 8, the sliding mechanism 9 and the sideslip mechanism 11 can enable the invention to achieve any angle change of the attack angle within the range of-15 degrees to 110 degrees according to the test measurement of multiple prototypes, and the angle range can ensure the flexibility and the diversity of the movement modes of the invention and meet different test requirements.
Claims (6)
1. A quadrilateral-mechanism-type large-attack-angle supporting system, which is characterized in that: the device comprises a tail rod, a main electric cylinder, an auxiliary electric cylinder, a sliding mechanism and a sideslip mechanism, wherein the sliding mechanism is arranged in the sideslip mechanism, the main electric cylinder and the auxiliary electric cylinder are arranged on the sliding mechanism in parallel, the main electric cylinder and the auxiliary electric cylinder are fixedly connected, the tail rod is arranged above the main electric cylinder, the main electric cylinder and the auxiliary electric cylinder are respectively hinged with the tail rod, a test model is arranged at the front end of the tail rod, the main electric cylinder and the auxiliary electric cylinder drive the tail rod to reciprocate in the vertical direction, the main electric cylinder and the auxiliary electric cylinder are driven by the sliding mechanism to reciprocate horizontally on the sideslip mechanism, and the main electric cylinder, the auxiliary electric cylinder and the sliding mechanism are driven by the sideslip mechanism to rotate horizontally;
the sliding mechanism comprises a supporting seat, two first linear guide rails and two first sliding blocks, the supporting seat is arranged on a lower turntable of the sideslip mechanism, the two first sliding blocks are arranged on the supporting seat in parallel, one first linear guide rail is correspondingly arranged above each first sliding block, and each first sliding block is in sliding fit with the corresponding first linear guide rail;
the tail rod comprises a rod body and a connecting seat, the front end of the connecting seat is provided with a mounting hole matched with the rod body, the tail rod is detachably connected with one end of the rod body through the matching of the connecting piece, and the other end of the rod body is detachably connected with the tail part of the test model;
the main electric cylinder and the auxiliary electric cylinder are fixedly connected through the auxiliary electric cylinder seat, and a quadrilateral mechanism is formed by enclosing the connecting seat, the main electric cylinder, the auxiliary electric cylinder seat and the auxiliary electric cylinder.
2. The quadrilateral-mechanism-type large-angle-of-attack support system according to claim 1, wherein: the electric cylinder is characterized by further comprising a sealing device, wherein the bottom of the sealing device is arranged on the supporting seat of the sliding mechanism and is positioned between the two sliding blocks, the top of the sealing device is arranged at the top of the sideslip mechanism, and the main electric cylinder sequentially penetrates through the sliding mechanism and the sealing device from bottom to top.
3. The quadrilateral-mechanism-type large-angle-of-attack support system according to claim 2, wherein: the utility model provides a sealing device, including the mechanism that sideslips, it has the upper shed to process on the mechanism that sideslips, the upper shed is used for sealing device's installing port, sealing device includes the roller shutter, the roller shutter support, the seat is used in the torsional spring pivot, the pivot is used in the torsional spring, torsional spring and two closing plates, the torsional spring is used in the pivot fixed mounting in the seat is used in the torsional spring pivot, seat fixed mounting is in the one end department of supporting seat top surface is used in the torsional spring pivot, roller shutter support fixed mounting is in the other end department of supporting seat top surface, two closing plates from last to lower level setting up in the upper shed department, two closing plates respectively with the inside wall sliding fit of upper shed, processing respectively on every closing plate has the first through hole and the second through hole of cooperation main electric cylinder and vice electric cylinder, one of rolling up shutter is connected with the torsional spring through two closing plates, the other end of rolling shutter is connected with another through the axis on the roller shutter support the closing plate the other end is connected with the torsional spring.
4. A quadrilateral-mechanism-type large-angle-of-attack support system according to any one of claims 1 to 3, characterized in that: the structure of the main electric cylinder is the same as that of the auxiliary electric cylinder, the main electric cylinder comprises a main cylinder barrel and a main cylinder rod, and the main cylinder rod consists of a twenty-four-edge electric cylinder rod and an electric cylinder rod head.
5. The quadrilateral-mechanism-type large-angle-of-attack support system according to claim 4, wherein: the included angle formed between the central axis of the main cylinder barrel and the plane of the sideslip mechanism is 60-90 degrees.
6. A quadrilateral-mechanism-type large-angle-of-attack support system according to claim 1, 2 or 3, characterized in that: the novel electric cylinder also comprises a pipe body, a pull rod upper seat, a pull rod, a pull bolt and a pull rod lower seat, wherein the rectangular steel pipe, the pull rod upper seat, the pull rod, the pull bolt and the pull rod lower seat form a triangle mechanism with the main electric cylinder.
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| CN201910167724.8A CN109765027B (en) | 2019-03-06 | 2019-03-06 | Quadrilateral mechanism type large attack angle supporting system |
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| CN201910167724.8A CN109765027B (en) | 2019-03-06 | 2019-03-06 | Quadrilateral mechanism type large attack angle supporting system |
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| CN109765027B true CN109765027B (en) | 2023-07-21 |
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| CN111307400B (en) * | 2020-03-31 | 2022-02-22 | 中国空气动力研究与发展中心低速空气动力研究所 | Back support device for wind tunnel ground effect test |
| CN111735602B (en) * | 2020-08-10 | 2020-11-17 | 中国空气动力研究与发展中心低速空气动力研究所 | Low-speed wind tunnel test model abdominal bracing system |
| CN112082727A (en) * | 2020-09-08 | 2020-12-15 | 中国航空工业集团公司哈尔滨空气动力研究所 | Control device applied to translational oscillation test of model with automatic variable attack angle |
| CN113970418A (en) * | 2021-10-26 | 2022-01-25 | 中国航空工业集团公司哈尔滨空气动力研究所 | Variable attack angle device for wind tunnel test |
| CN114923656B (en) * | 2022-07-20 | 2023-05-23 | 中国空气动力研究与发展中心高速空气动力研究所 | Rope supporting system for full-machine flutter wind tunnel test |
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2019
- 2019-03-06 CN CN201910167724.8A patent/CN109765027B/en active Active
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