A structure of a four-degree-of-freedom mechanism with an angle-of-attack frame connecting model support

Abstract

The application discloses a kind of to adopt four degrees of freedom mechanism angle of attack frame connection model support structure, comprising: X mechanism;Y mechanism, it is set in the inside of X mechanism, Y mechanism and X mechanism are slidingly connected in horizontal direction;Side slip base, it is set in the inside of Y mechanism, side slip base and Y mechanism are slidingly connected in vertical direction;Angle of attack frame, slidingly set on side slip base, the upper end of angle of attack frame is equipped with vertical knife support, and the upper end of vertical knife support is equipped with model;Cable-stayed rod is connected between angle of attack frame and vertical knife support, and front pillar is connected between model and angle of attack frame;Power mechanism is arranged between X mechanism and Y mechanism, between Y mechanism and side slip base, between side slip base and angle of attack frame.The application utilizes the angle of attack frame of four degrees of freedom mechanism to connect vertical knife support, has the ability of supporting model side slip angle, Y direction and X direction three degrees of freedom, has the characteristics of strong bearing capacity, many support points, reliable connection.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of high-speed aerodynamic test equipment, and more particularly, relates to a structure for connecting a model support to an angle-of-attack frame by using a four-degree-of-freedom mechanism. BACKGROUND

[0002] A model support mechanism is a core device of a high-speed wind tunnel, which is used to accurately change the position and posture of a model and bear the aerodynamic load of the model. A model support mechanism of a certain high-speed jet flow wind tunnel comprises four degrees of freedom, i.e., an angle of attack, a sideslip angle, Y and X directions. Under conventional conditions, a model support is connected to the angle-of-attack mechanism by using a bent-knife support, and the model can freely change the position and posture of the mechanism within the operating range of the four-degree-of-freedom mechanism. However, the bearing capacity of the bent-knife support is not high, the taper hole on the bent-knife support is single-point support, and it is difficult to reliably support a large model, especially an ultra-long and ultra-large weak model, which cannot well meet the support requirements of the certain high-speed jet flow wind tunnel. In a conventional high-speed wind tunnel, the core model support mechanism is usually a single angle-of-attack mechanism, and the expansion of the connection mode of the model support is difficult due to the limitation of the space of the connection part, the flow field and other factors, and the expandability is poor. After the four-degree-of-freedom mechanism is provided in the certain high-speed jet flow wind tunnel, the degrees of freedom are more, the space of the test cabin is large, and the expandability is great. In order to meet the support requirements, it is necessary to expand the connection mode of the model support. Expanding the connection mode of the model support on the non-bent-knife support of the four-degree-of-freedom mechanism can increase the size and load of the model to be supported, and reduce the number of operating degrees of freedom of the model support. According to the actual requirements, it is necessary to expand a structure for connecting a model support to an angle-of-attack frame, so as to have a three-degree-of-freedom operating capability. SUMMARY

[0003] An object of the present application is to solve at least the above problems and / or defects, and to provide at least the advantages to be described later.

[0004] In order to achieve these objects and other advantages according to the present application, a structure for connecting a model support to an angle-of-attack frame by using a four-degree-of-freedom mechanism is provided,

[0005] an X mechanism;

[0006] a Y mechanism arranged on the inner side of the X mechanism, and the Y mechanism is in sliding connection with the X mechanism in the horizontal direction;

[0007] a sideslip base arranged on the inner side of the Y mechanism, and the sideslip base is in sliding connection with the Y mechanism in the vertical direction;

[0008] an angle-of-attack frame slidingly arranged on the sideslip base, an upright-knife support is mounted on the upper end of the angle-of-attack frame, and a model is mounted on the upper end of the upright-knife support; a cable-stayed rod is connected between the angle-of-attack frame and the upright-knife support, and a front strut is connected between the model and the angle-of-attack frame;

[0009] Power mechanisms are arranged between the X mechanism and the Y mechanism, between the Y mechanism and the side-sliding base, and between the side-sliding base and the angle-of-attack frame.

[0010] Preferably, the structure of the oblique pull rod comprises:

[0011] A lower oblique pull rod is rotatably connected to the oblique pull rod base through a pin shaft;

[0012] An upper oblique pull rod is rotatably connected to the lower oblique pull rod through a locking screw at the lower end of the upper oblique pull rod, and the upper end of the upper oblique pull rod is rotatably connected to the vertical knife support;

[0013] A front strut base is further arranged on the angle-of-attack frame, the lower end of the front strut is provided with a U-shaped mounting piece, the U-shaped mounting piece is rotatably connected to the front strut base through a pin shaft, and the lower oblique pull rod passes through the U-shaped mounting piece and is connected to the locking screw.

[0014] Preferably, the rear end of the angle-of-attack frame is provided with a rear strut base, and the rear strut base is rotatably connected to a rear strut through a pin shaft.

[0015] Preferably, the upper end of the vertical knife support is provided with a conical connecting hole or a flange for mounting a model.

[0016] Preferably, the structure of the X mechanism comprises:

[0017] An X mechanism frame is a rectangular hollow frame without a beam at the top, and two groups of horizontal linear guides are respectively arranged on the left and right sides of the X mechanism frame, and an X mechanism servo oil cylinder is arranged between the two groups of horizontal linear guides on the same side;

[0018] Two groups of X mechanism sliding blocks are respectively arranged on the left and right sides of the Y mechanism, and each group of X mechanism sliding blocks is slidably arranged on the horizontal linear guide;

[0019] An X mechanism oil cylinder connecting seat is fixedly arranged on the outside of the Y mechanism, and the piston rod of the X mechanism servo oil cylinder is connected to the X mechanism oil cylinder connecting seat.

[0020] Preferably, the structure of the Y mechanism comprises:

[0021] A Y mechanism frame is a rectangular hollow frame without a beam at the top and the rear, two groups of vertical linear guides are respectively arranged on the left and right inner sides of the Y mechanism frame, and a Y mechanism servo oil cylinder is arranged between the two groups of vertical linear guides on the same side;

[0022] Two groups of Y mechanism sliding blocks are fixed on the two sides of the side sliding base, and each group of Y mechanism sliding blocks is correspondingly slidingly installed on the vertical linear guide rail;

[0023] Y mechanism oil cylinder connecting seats are fixed on the two sides of the side sliding base, and the piston rod of the Y mechanism servo oil cylinder is connected with the Y mechanism oil cylinder connecting seat.

[0024] Preferably, the structure of the side sliding base comprises:

[0025] The side sliding base frame is a closed rectangular structure with a top flat plate structure, and the upper surface of the side sliding base is provided with a side sliding base rotating core hole and three circular arc guide rails which are concentric and coplanar with the side sliding base rotating core hole;

[0026] Servo oil cylinders are arranged on the outer side of the circular arc guide rail, and the end of the servo oil cylinder is hinged with the side sliding base frame through a side sliding oil cylinder fixed rotating core.

[0027] Two groups of side sliding base sliding blocks are fixed on the bottom of the angle of attack frame, and the side sliding base sliding blocks are slidingly connected with the circular arc guide rail; a side sliding base rotating core hole pin shaft which is rotationally connected with the side sliding base rotating core hole is also fixed on the bottom of the angle of attack frame.

[0028] A side sliding oil cylinder connecting seat is arranged on the outer side of the angle of attack frame, and the piston rod of the servo oil cylinder is hinged with the side sliding oil cylinder connecting seat.

[0029] Preferably, the lower end of the X mechanism is provided with an X mechanism lower cross beam, the front end and the rear end of the X mechanism are provided with an X mechanism front cross beam and an X mechanism rear cross beam respectively, the lower end of the X mechanism is also provided with a plurality of lower bases, and the upper end of the X mechanism is provided with an X mechanism connecting surface; a plurality of Y direction fixed holes are also arranged in the vertical direction of the inner side of the Y mechanism.

[0030] The lower end of the Y mechanism is provided with a Y mechanism lower cross beam, the front end of the Y mechanism is provided with a Y mechanism front cross beam, and the upper end of the Y mechanism is provided with a Y mechanism support connecting surface.

[0031] The upper surface of the side sliding base is provided with a side sliding base support connecting surface, and the inner side of the side sliding base is provided with a Y direction fixed pin shaft which is matched with the Y direction fixed hole; a side sliding base zero position hole is also arranged on the upper surface of the side sliding base.

[0032] The bottom of the angle of attack frame is provided with an angle of attack mechanism zero position pin which is matched with the side sliding base zero position hole.

[0033] The present application at least comprises the following advantages: the present application uses the four-degree-of-freedom mechanism to connect the stand of the vertical cutter with the angle of attack frame, has the ability to support the side slip angle, Y direction and X direction three degrees of freedom, has the characteristics of strong bearing capacity, multiple support points and reliable connection.

[0034] Other advantages, objects, and features of the present application will be understood by those skilled in the art from the following description, and will be appreciated when the present application is practiced. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The side structure diagram of the structure of the model support connected with the angle of attack frame of the four-degree-of-freedom mechanism provided by the present application is shown in the figure.

[0036] Figure 2 The side structure diagram of the angle of attack frame, the inclined rod, the front support column and the rear support column is shown in the figure.

[0037] Figure 3 The structure diagram of the inclined rod, the front support column and the rear support column is shown in the figure.

[0038] Figure 4 The structure diagram of the four-degree-of-freedom mechanism without the vertical cutter stand is shown in the figure.

[0039] Figure 5 The axonometric view of the X mechanism is shown in the figure.

[0040] Figure 6 The front axonometric view of the Y mechanism is shown in the figure.

[0041] Figure 7 The rear axonometric view of the Y mechanism is shown in the figure.

[0042] Figure 8 The axonometric view of the side slip base is shown in the figure.

[0043] Figure 9 The axonometric view of the angle of attack frame is shown in the figure.

[0044] Figure 10 The connection structure diagram of the Y direction fixed pin shaft and the electric cylinder is shown in the figure. DETAILED DESCRIPTION

[0045] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement the present application according to the description.

[0046] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0047] It should be noted that in the description of this invention, the orientations or positional relationships indicated by terms are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] Furthermore, in this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] like Figures 1-10 As shown: A structure of the present invention, employing a four-degree-of-freedom mechanism for connecting an angle-of-attack frame to a model support, includes:

[0051] Organization X, 1;

[0052] Y mechanism 2 is disposed inside X mechanism 1, and Y mechanism 2 and X mechanism 1 are slidably connected in the horizontal direction;

[0053] A sliding base 3 is disposed inside the Y mechanism 2, and the sliding base 3 and the Y mechanism 2 are slidably connected in the vertical direction;

[0054] An angle-of-attack frame 4 is slidably mounted on the side-sliding base 3. A vertical blade support 5 is installed at the upper end of the angle-of-attack frame 4, and a model 8 is installed at the upper end of the vertical blade support 5. A diagonal tie rod 6 connects the angle-of-attack frame 4 and the vertical blade support 5, and a front support column 7 connects the model and the angle-of-attack frame 4.

[0055] Power mechanisms are arranged between the X mechanism 1 and the Y mechanism 2, between the Y mechanism 2 and the side-slip base 3, and between the side-slip base 3 and the angle-of-attack frame 4.

[0056] Working principle: the structure of the angle-of-attack frame connecting model support provided by the application is obtained by removing the middle support of the original four-degree-of-freedom mechanism curved-knife support, retaining the lower support, and running the lower support to the maximum angle-of-attack position, so that the lower support is completely hidden in the angle-of-attack frame 4; then a vertical-knife support 5 is installed at the upper end of the angle-of-attack frame 4, a model 8 is installed at the upper end of the vertical-knife support 5 by means of taper fitting or flange, the vertical-knife support 5 and the angle-of-attack frame 4 are connected by means of a diagonal pull rod 6, and a front strut 7 is connected between the lower end of the model 8 and the angle-of-attack frame 4; during wind tunnel testing, the vertical-knife support 5 and the diagonal pull rod 6 are combined to bear all horizontal axial forces and part of the gravity direction load, so that most of the horizontal load borne by the vertical-knife support 5 is converted into the tension or pressure borne by the diagonal pull rod 6, greatly enhancing the ability of the entire structure to bear horizontal axial forces. Meanwhile, the four-degree-of-freedom mechanism based on the application adopts a series connection mode of the X mechanism 1, the Y mechanism 2, the side-slip base 3, and the angle-of-attack frame 4, and the series connection order is X mechanism 1→Y mechanism 2→side-slip base 3→angle-of-attack frame 4, so that the model on the vertical-knife support 5 has three degrees of freedom of X direction, Y direction, and side-slip angle (β), the movement of the three degrees of freedom is driven by the respective power mechanisms, and the movement in each direction is independent of and does not affect the movement in other directions, and each sub-mechanism does not have coupling interference to other sub-mechanisms when moving.

[0057] In the above technical solution, the structure of the diagonal pull rod 6 comprises:

[0058] A lower diagonal pull rod 601, the angle-of-attack frame 4 is provided with a diagonal pull rod base 9, and the lower diagonal pull rod 601 is rotationally connected to the diagonal pull rod base 9 by means of a pin shaft;

[0059] An upper diagonal pull rod 602, the lower end of the upper diagonal pull rod 602 is connected to the lower diagonal pull rod 601 by means of a locking screw 603, and the upper end of the upper diagonal pull rod 602 is rotationally connected to the vertical-knife support 5;

[0060] The front pillar base 10 is further arranged on the attack angle frame 4, the lower end of the front pillar 7 is provided with a U-shaped mounting piece 701, the U-shaped mounting piece 701 is rotatably connected with the front pillar base 10 through a pin shaft, and the lower inclined pull rod 601 passes through the U-shaped mounting piece 701 and is connected with the locking screw 603. The upper inclined pull rod 602 and the lower inclined pull rod 601 are respectively provided with left-handed screw holes and right-handed screw holes, and the locking screw 603 is also respectively provided with left-handed threads and right-handed threads at both ends. By adjusting the locking screw 603, the inclined pull rod 6 is tensioned, most of the horizontal load borne by the vertical cutter support 5 is converted into tension or pressure borne by the inclined pull rod 6, and the ability of the whole structure to bear the horizontal axial force is greatly enhanced. The front pillar 7 is rotatably connected with the front pillar base 10 through a pin shaft, so that the front pillar 7 can rotate along the pin hole. This design can eliminate the bending load, so that the front pillar 7 only bears the tensile and compressive load in the direction of the front pillar axis.

[0061] In the above technical solution, the rear end of the attack angle frame 4 is provided with a rear pillar base 11, the rear pillar base 11 is rotatably connected with a rear pillar 12 through a pin shaft, when the model is very large and long, the rear pillar 12 is added to further enhance the rigidity and reliability of the support for the model 8; like the front pillar 7, the rear pillar 12 is rotatably connected with the rear pillar base 11 through a pin shaft, so that the rear pillar 12 can rotate along the pin hole. This design can eliminate the bending load, so that the rear pillar 12 only bears the tensile and compressive load in the direction of the front pillar axis.

[0062] In the above technical solution, the upper end of the vertical cutter support is provided with a conical connecting hole or a flange for mounting the model.

[0063] In the above technical solution, the structure of the X mechanism 1 comprises:

[0064] The X mechanism frame 101 is a rectangular structure hollow frame without a cross beam at the top, two groups of horizontal linear guides 102 are respectively arranged on the left and right sides in the X mechanism frame 101, and an X mechanism servo oil cylinder 103 is arranged between the two groups of horizontal linear guides 102 on the same side; the axes of the four groups of horizontal linear guides 102 and the two X mechanism servo oil cylinders 103 are parallel to the axis of the wind tunnel, and the top plane of the horizontal linear guide 102 is parallel to the axis of the wind tunnel and perpendicular to the horizontal plane;

[0065] Two groups of connecting X mechanism sliders 203 are respectively arranged on the left and right sides of the Y mechanism 2, each group of connecting X mechanism sliders 203 is slidingly arranged on the horizontal linear guide 102, and according to the load size, at least two connecting X mechanism sliders 203 are arranged on the outer side of the Y mechanism 2 corresponding to each horizontal linear guide 102, Figure 5 and Figure 6 The number of the connecting X mechanism sliders 203 corresponding to each horizontal linear guide 102 is four as shown in the above technical solution.

[0066] The two outer sides of the Y mechanism 2 are symmetrically fixed with X mechanism oil cylinder connecting seats 204, the piston rod of the X mechanism servo oil cylinder 103 is connected with the X mechanism oil cylinder connecting seat 204, that is, the Y mechanism 2 is driven by the two X mechanism servo oil cylinders 103 to move horizontally in the X direction along the axis direction of the wind tunnel, so as to realize the change of the X direction (horizontal direction) degree of freedom of the Y mechanism 2, the side slip base 3, the angle of attack frame 4, the vertical cutter support 5 and the model.

[0067] In the above technical scheme, the structure of the Y mechanism comprises:

[0068] The Y mechanism frame 201 is a rectangular structure hollow frame without a transverse beam at the top and the rear, and two groups of vertical linear guides 202 are respectively installed on the left and right inner sides of the Y mechanism frame 201, and a Y mechanism servo oil cylinder 207 is installed between the two groups of vertical linear guides 202 on the same side; the axes of the four groups of vertical linear guides 202 and the two Y mechanism servo oil cylinders 207 are located in the vertical plane and are perpendicular to the horizontal plane;

[0069] Two groups of Y mechanism connecting sliding blocks 310 are respectively fixed on the two sides of the side slip base 3, and each group of Y mechanism connecting sliding blocks 310 is slidingly installed on the vertical linear guide 202; at least two Y mechanism connecting sliding blocks 310 are slidingly arranged on each vertical linear guide 202, Figure 8 That is, the structure of the side slip base 3 provided with two Y mechanism connecting sliding blocks 310 is shown in the structure diagram;

[0070] Y mechanism oil cylinder connecting seats 308 are respectively fixed on the two sides of the side slip base 3, and the piston rod of the Y mechanism servo oil cylinder 207 is connected with the Y mechanism oil cylinder connecting seat 308, that is, the side slip base 3 is driven by the Y mechanism servo oil cylinder 207 to move in the Y direction along the vertical direction perpendicular to the axis of the wind tunnel, so as to realize the change of the Y direction (vertical direction) degree of freedom of the side slip base 3, the angle of attack frame 4, the vertical cutter support 5 and the model, and the symmetric arrangement of the vertical linear guide 310 and the Y mechanism servo oil cylinder 207 realizes the effect of synchronously driving the side slip base 3 from both sides, and the up-down movement of the side slip base 3 is more stable;

[0071] The rear part of the Y mechanism frame 201 is without a transverse beam, and the front transverse beam 205, the lower transverse beam 209 and the Y mechanism connecting sliding block 203 after the connection of the Y mechanism frame 201 and the X mechanism frame 101 improve the rigidity of supporting the Y mechanism frame 201, the structure is compact, and the Y direction lifting needs of the side slip base 3, the angle of attack frame 4, the vertical cutter support 5 and the model are met.

[0072] In the above technical scheme, the structure of the side slip base comprises:

[0073] The side-slip base frame 301 is a closed rectangular structure with a top flat plate structure, and the upper surface of the side-slip base frame 301 is provided with a side-slip base rotating core hole 302 and three circular arc guide rails 303 concentric with and coplanar with the side-slip base rotating core hole 302;

[0074] The outer side of the circular arc guide rail 303 is provided with a servo oil cylinder 305, and the end of the servo oil cylinder 305 is hinged to the side-slip base frame 301 through a side-slip oil cylinder fixed rotating core 307; the area swept by the servo oil cylinder 305 is lower than the plane of the circular arc guide rail 303 and the side-slip base rotating core hole 302, leaving space to meet the operation of the servo oil cylinder 305;

[0075] The bottom of the angle-of-attack frame 4 is fixedly provided with two groups of side-slip base connecting sliding blocks 407, which are in sliding connection with the circular arc guide rails 303; the bottom of the angle-of-attack frame 4 is also fixedly provided with a side-slip base connecting rotating core hole pin shaft (not shown) in rotational connection with the side-slip base rotating core hole 302; each group of circular arc guide rails 303 corresponds to 2 groups or more than 2 groups of side-slip base connecting sliding blocks 407 installed at the lower end of the angle-of-attack frame 4;

[0076] The outer side of the angle-of-attack frame 4 is provided with a side-slip oil cylinder connecting seat 408, and the piston rod of the servo oil cylinder 305 is hinged to the side-slip oil cylinder connecting seat 408. After the circular arc guide rail 303 and the side-slip base connecting sliding block 407 are installed, under the driving of the servo oil cylinder 305, the angle-of-attack frame 4 makes a circular motion with the side-slip base rotating core hole 302 as the center and along the circular arc guide rail 303, which is called side-slip direction motion.

[0077] In the above technical solution, the lower end of the X mechanism 1 is provided with an X mechanism lower cross beam 106, the front end and the rear end of the X mechanism are respectively provided with an X mechanism front cross beam 108 and an X mechanism rear cross beam 105, and the lower end of the X mechanism 1 is also provided with six lower bases 107; the upper end of the X mechanism 1 is provided with an X mechanism connecting surface 104;

[0078] The lower end of the Y mechanism 2 is provided with a Y mechanism lower cross beam 209, the front end of the Y mechanism 2 is provided with a Y mechanism front cross beam 205, the upper end of the Y mechanism 2 is provided with a Y mechanism support connecting surface 208, and a plurality of Y direction fixed holes 206 are arranged in the vertical direction on the inner side of the Y mechanism 2;

[0079] The upper surface of the side slide base 3 is provided with a side slide base support connecting surface 306, the base support connecting surface 306 of the side slide base 3 is arranged at the four corners of the side slide base 3 and is welded with thick steel plate for reinforcement, and the model support device for spanning the angle of attack frame 4 can be designed through the four supports, so as to avoid disassembling the angle of attack frame when installing the supports, the inner side of the side slide base 3 is provided with a Y-direction fixing pin shaft 309 matched with the Y-direction fixing hole 206, when the Y mechanism oil cylinder 207 cannot work or needs to be overhauled, the Y-direction fixing pin shaft 309 is inserted into the Y-direction fixing hole 206, so as to realize the support and positioning of the Y-direction of the side slide base 3, as shown in Figure 10 The Y-direction fixing pin shaft 309 is rotationally connected with the telescopic rod of the electric cylinder, and the Y-direction fixing pin shaft 309 is slidably arranged on the fixing seat, and the Y-direction fixing pin shaft 309 is inserted into or separated from the Y-direction fixing hole through the driving of the electric cylinder; the upper surface of the side slide base 3 is also provided with a side slide base zero position hole 304;

[0080] The bottom of the angle of attack frame 4 is provided with an angle of attack mechanism zero position pin 404 matched with the side slide base zero position hole 304, the angle of attack mechanism zero position pin 404 is fixedly arranged in the side slide base zero position hole 304, and is used for realizing the mechanical zero position fixing of the side slide base.

[0081] When the middle support of the angle of attack frame 4 is connected with the model (that is, the bending knife support is installed in the angle of attack frame 4, and the model is supported by the middle support of the bending knife support), the load and length of the model are greatly limited, for example, the middle support of the four-degree-of-freedom mechanism of a certain 2-meter-level wind tunnel, the upward lifting force (the force perpendicular to the model axis direction) and the axial force (the force parallel to the model axis direction) or the resultant force thereof are all not more than 50000N, and the length of the supported model is not more than 4m.

[0082] The maximum axial force of the four-degree-of-freedom mechanism frame connecting model support provided by the present application reaches 93000N. This load cannot be supported by the middle support.

[0083] The number of devices and the scale of processing described herein are used to simplify the description of the present application. The application, modification and change of the present application are obvious to those skilled in the art.

[0084] Although the embodiments of the present application have been disclosed as above, they are not limited to the application and implementation listed in the specification, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, therefore, the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A structure employing a four-degree-of-freedom mechanism with an angle-of-attack frame connecting a model support, characterized in that, include: Organization X; The Y mechanism is located inside the X mechanism, and the Y mechanism and the X mechanism are slidably connected in the horizontal direction. A sliding base is disposed inside the Y mechanism, and the sliding base and the Y mechanism are slidably connected in the vertical direction; An angle-of-attack frame is slidably mounted on the side-sliding base. A vertical blade support is installed at the upper end of the angle-of-attack frame, and a model is installed at the upper end of the vertical blade support. A diagonal tie rod connects the angle-of-attack frame and the vertical blade support, and a front support column connects the model and the angle-of-attack frame. A power mechanism is provided between the X mechanism and the Y mechanism, between the Y mechanism and the side sliding base, and between the side sliding base and the angle-of-attack frame; The structure of the X mechanism includes: The X-mechanism frame is a rectangular hollow frame without a top beam. Two sets of horizontal linear guides are installed on the left and right sides of the X-mechanism frame, and an X-mechanism servo cylinder is installed between the two sets of horizontal linear guides on the same side. Two sets of connecting X mechanism sliders are fixedly installed on the left and right sides of the Y mechanism, and each set of connecting X mechanism sliders is slidably installed on the horizontal linear guide rail. An X mechanism cylinder connecting seat is fixedly installed on the outside of the Y mechanism, and the piston rod of the X mechanism servo cylinder is connected to the X mechanism cylinder connecting seat. The structure of the Y-mechanism includes: The Y-mechanism frame is a rectangular hollow frame without crossbeams at the top and rear. Two sets of vertical linear guides are installed on the left and right inner sides of the Y-mechanism frame, and a Y-mechanism servo cylinder is installed between the two sets of vertical linear guides on the same side. Two sets of Y-connecting mechanism sliders are fixed on both sides of the side sliding base, and each set of Y-connecting mechanism sliders is slidably mounted on the vertical linear guide rail. Y-mechanism cylinder connecting seats are fixedly installed on both sides of the side sliding base, and the piston rod of the Y-mechanism servo cylinder is connected to the Y-mechanism cylinder connecting seat.

2. The structure of the model support using a four-degree-of-freedom mechanism angle-of-attack frame as described in claim 1, characterized in that, The structure of the tie rod includes: The lower inclined tie rod is mounted on the angle-of-attack frame, and the lower inclined tie rod and the inclined tie rod base are rotatably connected by a pin. The upper inclined tie rod has its lower end connected to the lower inclined tie rod via a locking screw, and its upper end is rotatably connected to the vertical blade support. The angle-of-attack frame is also equipped with a front support base. The lower end of the front support is provided with a U-shaped mounting piece. The U-shaped mounting piece is rotatably connected to the front support base via a pin. The lower inclined tie rod passes through the U-shaped mounting piece and is connected to the locking screw.

3. The structure of the model support using a four-degree-of-freedom mechanism angle-of-attack frame as described in claim 1, characterized in that, The rear end of the angle-of-attack frame is provided with a rear support base, and the rear support base is rotatably connected to the rear support via a pin.

4. The structure of the model support using a four-degree-of-freedom mechanism angle-of-attack frame as described in claim 1, characterized in that, The upper end of the vertical blade support is provided with a tapered connecting hole or flange for mounting the model.

5. The structure of the model support using a four-degree-of-freedom mechanism angle-of-attack frame as described in claim 1, characterized in that, The structure of the side-slip base includes: The side-sliding base frame is a closed rectangular structure with a top flat plate structure. The upper surface of the side-sliding base is provided with a side-sliding base swivel hole and three circular arc guide rails that are concentric and coplanar with the side-sliding base swivel hole. A servo cylinder is provided on the outer side of the arc guide rail, and the end of the servo cylinder is hinged to the side sliding base frame through the side sliding cylinder fixing spindle. The bottom of the angle-of-attack frame is fixedly provided with two sets of sliding base sliders, which are slidably connected to the arc guide rail; the bottom of the angle-of-attack frame is also fixedly provided with a sliding base pivot pin that is rotatably connected to the pivot hole of the sliding base. A side-sliding cylinder connecting seat is provided on the outer side of the angle-of-attack frame, and the piston rod of the servo cylinder is hinged to the side-sliding cylinder connecting seat.

6. The structure of the model support using a four-degree-of-freedom mechanism angle-of-attack frame as described in any one of claims 1-5, characterized in that, The lower end of the X mechanism is provided with a lower crossbeam, the front end and the rear end of the X mechanism are respectively provided with a front crossbeam and a rear crossbeam, the lower end of the X mechanism is also provided with multiple lower bases, and the upper end of the X mechanism is provided with an X mechanism connecting surface; the inner side of the Y mechanism is also provided with multiple Y-direction fixing holes in the vertical direction. The lower end of the Y mechanism is provided with a lower crossbeam, the front end of the Y mechanism is provided with a front crossbeam, and the upper end of the Y mechanism is provided with a support connection surface. The upper surface of the sliding base is provided with a sliding base support connection surface, and the inner side of the sliding base is provided with a Y-direction fixing pin that matches the Y-direction fixing hole; the upper surface of the sliding base is also provided with a sliding base zero position hole. The bottom of the angle-of-attack frame is provided with an angle-of-attack mechanism zero-position pin that is compatible with the zero-position hole of the side-sliding base.

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