A structure of a model support connected with a four-degree-of-freedom mechanism side slide base

Abstract

The application discloses a structure of a model support connected with a side sliding base by a four-degree-of-freedom mechanism, which comprises an X mechanism, a Y mechanism arranged on the inner side of the X mechanism and slidably connected with the X mechanism in the horizontal direction, a side sliding base arranged on the inner side of the Y mechanism and slidably connected with the Y mechanism in the vertical direction, a model support fixed on a connecting platform of the side sliding base and having a model supported on the upper end of the model support, and a power mechanism arranged between the X mechanism and the Y mechanism and between the Y mechanism and the side sliding base. The model support is connected with the side sliding base by the four-degree-of-freedom mechanism, has the ability of supporting the model in the Y direction and the X direction, and has the characteristics of high bearing capacity, multiple supporting points and reliable connection.

Description

Technical Field

[0001] This invention belongs to the technical field of high-speed aerodynamic testing equipment. More specifically, this invention relates to a structure for connecting a model support using a four-degree-of-freedom mechanism with a side-sliding base. Background Technology

[0002] Model support mechanisms are essential core equipment in high-speed wind tunnels, used to accurately change the model's position and attitude, and to withstand the aerodynamic loads borne by the model. A certain high-speed jet wind tunnel is equipped with a model support mechanism containing four degrees of freedom (DOF): angle of attack, sideslip angle, and Y and X directions. Under conventional conditions, a curved support bracket on the angle-of-attack mechanism connects to the model support, allowing the model to freely change its position and attitude within the four-DOF operating range. However, the curved support bracket has limited load-bearing capacity, and its conical hole provides only a single support, making it difficult to support large models, especially some extremely long and large, fragile models requiring multi-point support. This cannot adequately meet the support requirements of this high-speed jet. In conventional high-speed wind tunnels, the core model support mechanism is usually a single angle-of-attack mechanism. Due to limitations in connection space and flow field, expanding the connection method for the model support is difficult and has poor scalability. This high-speed jet wind tunnel, equipped with a four-DOF mechanism, has more degrees of freedom, a larger test chamber space, and greater scalability. To meet the support requirements, it is necessary to expand the connection method for the model support. Expanding the connection method of the model support on the non-scimitar support of the four-degree-of-freedom mechanism can increase the allowable model size load, but it will reduce the number of degrees of freedom of the model support motion. Based on actual needs, it is necessary to develop a structure that connects the model support to the side-sliding base, enabling it to operate with two degrees of freedom. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems and / or defects, and to provide at least the advantages described below.

[0004] To achieve these objectives and other advantages according to the present invention, a structure is provided that uses a four-degree-of-freedom mechanism frame to connect a model support, comprising:

[0005] Organization X;

[0006] The Y mechanism is located inside the X mechanism, and the Y mechanism and the X mechanism are slidably connected in the horizontal direction.

[0007] A sliding base is disposed inside the Y mechanism, and the sliding base and the Y mechanism are slidably connected in the vertical direction;

[0008] A model support is fixed to a connecting platform on the side-sliding base, and the upper end of the model support supports a model.

[0009] A power mechanism is provided between the X mechanism and the Y mechanism, and between the Y mechanism and the side sliding base.

[0010] Preferably, the structure of the model support comprises:

[0011] a lower transition block fixedly installed on the connecting platform;

[0012] a lower support comprising four vertical columns, wherein two horizontal-directional vertical columns are fixedly provided with a horizontal beam between their upper ends, two longitudinal-directional vertical columns are connected with a lower beam between their lower ends, and two longitudinal-directional vertical columns are connected with an upper beam between their upper ends, and the vertical columns are fixedly connected with the lower transition block;

[0013] a support platform provided at the upper ends of the two horizontal beams;

[0014] a plurality of support columns fixedly provided in pairs on the support platform, and the model is fixed at the upper ends of the support columns.

[0015] Preferably, a diagonal pull rod is fixed between the two longitudinal-directional vertical columns.

[0016] Preferably, the cross section of the support column is a blade structure.

[0017] Preferably, the structure of the X mechanism comprises:

[0018] an X mechanism frame which is a rectangular hollow frame without a horizontal beam at the top, and two groups of horizontal linear guides are respectively installed on the left and right sides inside the X mechanism frame, and an X mechanism servo oil cylinder is installed between the two groups of horizontal linear guides on the same side;

[0019] two groups of connecting X mechanism sliders are respectively fixedly provided on the left and right sides of the Y mechanism, and each group of connecting X mechanism sliders is correspondingly slidably installed on the horizontal linear guide;

[0020] an X mechanism oil cylinder connecting seat is fixedly provided on the outer side of the Y mechanism, and a piston rod of the X mechanism servo oil cylinder is connected with the X mechanism oil cylinder connecting seat.

[0021] Preferably, the structure of the Y mechanism comprises:

[0022] a Y mechanism frame which is a rectangular hollow frame without a horizontal beam at the top and rear, and two groups of vertical linear guides are respectively installed on the left and right inner sides of the Y mechanism frame, and a Y mechanism servo oil cylinder is installed between the two groups of vertical linear guides on the same side;

[0023] two groups of connecting Y mechanism sliders are respectively fixed on the two sides of the side sliding base, and each group of connecting Y mechanism sliders is correspondingly slidably installed on the vertical linear guide;

[0024] Two sides of the side sliding base are respectively fixedly provided with Y mechanism oil cylinder connecting seats, and a piston rod of the Y mechanism servo oil cylinder is connected with the Y mechanism oil cylinder connecting seat.

[0025] Preferably, the structure of the side sliding base comprises:

[0026] The side sliding base frame comprises a bottom plate, a plurality of vertical beams are fixedly arranged on the bottom plate, upper ends of the vertical beams are fixedly provided with a top plate, the Y mechanism sliders are symmetrically installed on the side surfaces of the bottom plate and the top plate respectively, and the Y mechanism oil cylinder connecting seats are installed on the side surface of the top plate.

[0027] Four groups of telescopic positioning mechanisms are installed on the upper surface of the bottom plate, and the four groups of telescopic positioning mechanisms are arranged in pairs on the bottom plate, and the structure of each group of telescopic positioning mechanisms comprises:

[0028] The telescopic rod end of the electric cylinder is rotatably connected with a Y direction fixed pin shaft, a fixed seat is installed close to the edge position of the bottom plate, the Y direction fixed pin shaft is slidably arranged in the fixed seat, and a plurality of Y direction fixed holes are formed in the vertical direction on the two opposite inner sides of the Y mechanism.

[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 respectively provided with an X mechanism front cross beam and an X mechanism rear cross beam, the lower end of the X mechanism is further provided with a plurality of lower bases, and the upper end of the X mechanism is provided with an X mechanism connecting surface.

[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 present application at least has the following advantages: the side sliding base connecting model support of the four degree of freedom mechanism has the characteristics of strong bearing capacity, multiple support points and reliable connection.

[0032] Other advantages, objects and features of the present application will be apparent from the following description, and will be understood by those skilled in the art through the study and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The structure schematic diagram of the four degree of freedom mechanism side sliding base connecting model support is provided.

[0034] Figure 2 The side surface structure schematic diagram of the four degree of freedom mechanism side sliding base connecting model support is provided.

[0035] Figure 3It is a structural schematic diagram of the model support and the side sliding base;

[0036] Figure 4 It is a structural schematic diagram of the model support;

[0037] Figure 5 It is an axonometric view of the X mechanism;

[0038] Figure 6 It is a front axonometric view of the Y mechanism;

[0039] Figure 7 It is a rear axonometric view of the Y mechanism;

[0040] Figure 8 It is a structural schematic diagram of the connection between the Y direction fixed pin shaft and the electric cylinder. DETAILED DESCRIPTION

[0041] The present application will be further described below in conjunction with the accompanying drawings, so that those skilled in the art can implement the present application according to the description and the drawings.

[0042] 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.

[0043] It should be noted that in the description of the present application, the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mount", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, can be internal communication of two elements, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0045] In addition, in the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0046] As shown in Figures 1-8 : a structure of a four-degree-of-freedom mechanism side sliding base connecting model support provided by the present application, comprising:

[0047] X mechanism 1;

[0048] Y mechanism 2, which is arranged on the inner side of the X mechanism 1, and the Y mechanism 2 is in sliding connection with the X mechanism 1 in the horizontal direction;

[0049] Side sliding base 3, which is arranged on the inner side of the Y mechanism 2, and the side sliding base 3 is in sliding connection with the Y mechanism 2 in the vertical direction;

[0050] Model support 4, which is fixed on the connecting platform of the side sliding base 3, and the upper end of the model support supports a model 6;

[0051] Power mechanisms are arranged between the X mechanism 1 and the Y mechanism 2, and between the Y mechanism 2 and the side sliding base 3.

[0052] Working principle: the structure of the four-degree-of-freedom mechanism side sliding base connecting model support provided by the present application utilizes the four-degree-of-freedom mechanism side sliding base to connect the model support, without the need to remove the angle mechanism above the side sliding base, and through the driving of the corresponding power mechanisms, the Y mechanism 2 can move in the horizontal direction on the X mechanism 1, and the side sliding base can move in the vertical direction on the Y mechanism 2, so that the structure has the positioning support ability of two degrees of freedom in the X direction and the Y direction. The present application has the characteristics of convenient installation, strong bearing capacity, large support platform length, multiple support points, and the ability to support large models. In order to connect the model and the model support by using the side sliding base 3, the middle support of the curved knife support should be removed, the lower support should be retained, and the lower support should be operated to a large angle position, so that the lower support is completely retracted into the angle frame. The Y mechanism 2 drives the side sliding base 3 and the angle frame 5 to descend to a certain height, and at this height, the model 6 is located at the test height. When the test is needed, after installation, the test height can be further reduced, and after the flow field is stably established, the model is raised into the flow field, reducing the impact of the wind tunnel start on the model and the support system.

[0053] In the above technical solution, the structure of the model support 4 comprises:

[0054] The lower transition blocks 401 are fixedly installed on the connecting platforms 306 on the upper surface of the side-slip base 3, the connecting platforms 306 on the upper surface of the side-slip base 3 are arranged at four corners of the upper surface of the side-slip base 3, and thick steel plates are welded for reinforcement, so that the model support device can be designed to span the angle-of-attack frame 5 through four supports, thereby avoiding disassembly of the angle-of-attack frame during installation of the model support; the four lowermost lower transition blocks 401 mainly serve to connect the side-slip base 3 and the lower support 402, and when the pins on the lower transition blocks 401 are loosened after being disassembled and assembled for multiple times, only the lower transition blocks 401 need to be replaced, thereby avoiding replacement of the entire lower support 402.

[0055] The lower support 402 comprises four columns, a cross beam 403 is fixedly arranged between the upper ends of the two columns in the width direction, a lower beam 404 is connected between the lower ends of the two columns in the length direction, and an upper beam 405 is connected between the upper ends of the two columns in the length direction; the columns are fixedly connected with the lower transition blocks 401, and diagonal pull rods 408 are fixed between the two columns in the length direction; the main function of the lower support 402 is to cover the angle-of-attack frame 5 and directly connect with the side-slip base 3, and this connection mode has the advantages of wide width, convenient support and operation, and is suitable for support of large and complex components. Since the lower support 402 is far away from the axis of the wind tunnel, the load and moment borne by the lower support 402 are large, and in order to improve the bearing capacity, the front and rear of the lower support 402 are both composed of two large-size columns and a cross beam 403, the front and rear columns and the cross beam 403 are assembled by the upper beam 405, the lower beam 404 and the diagonal pull rods 408, and the assembly mode is pin shaft connection, so that the capacity of the lower support 402 to bear bidirectional horizontal load is greatly increased, thereby meeting the load requirements of related tests.

[0056] The support platforms 406 are arranged at the upper ends of the two cross beams 403;

[0057] The four support columns 407 are fixedly arranged in pairs on the support platforms 406, and the model is fixed at the upper ends of the support columns 407.

[0058] In the above technical solution, the cross section of the support column 407 is in the form of a blade, so as to reduce airflow blockage, and the height, size and number of the support column 407 are determined according to the model and test requirements. Generally, the top plane of the support platform 406 should be far away from the flow field when the device is in the test state, so as to reduce the degree of blockage, and the farther the better when the strength and rigidity of the support column 407 meet the requirements.

[0059] In the above technical solution, the structure of the X mechanism 1 comprises:

[0060] The X mechanism frame 101 is a rectangular structure hollow frame without a beam on the top, and two groups of horizontal linear guides 102 are respectively arranged on the left and right sides inside 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;

[0061] Two groups of continuous X mechanism sliders 203 are respectively arranged on the left and right sides of the Y mechanism 2, and each group of continuous X mechanism sliders 203 is slidingly arranged on the horizontal linear guide 102; according to the load size, at least two continuous X mechanism sliders 203 are arranged on the outside of the Y mechanism 2 corresponding to each horizontal linear guide 102, Figure 5 and Figure 6 The number of continuous X mechanism sliders 203 corresponding to each horizontal linear guide 102 is four as shown in the above technical scheme.

[0062] Two X mechanism oil cylinder connecting seats 204 are symmetrically arranged on the two outer sides of the Y mechanism 2, and 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 to move horizontally in the X direction along the axis of the wind tunnel by the two X mechanism servo oil cylinders 103, 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 5, the model support 4 and the model 6.

[0063] In the above technical scheme, the structure of the Y mechanism comprises:

[0064] The Y mechanism frame 201 is a rectangular structure hollow frame without a beam on the top and the rear, and two groups of vertical linear guides 202 are respectively arranged on the left and right inner sides of the Y mechanism frame 201, and a Y mechanism servo oil cylinder 207 is arranged 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 perpendicular to the horizontal plane;

[0065] Two groups of continuous Y mechanism sliders 310 are respectively arranged on the two sides of the side slip base 3, and each group of continuous Y mechanism sliders 310 is slidingly arranged on the vertical linear guide 202; at least two continuous Y mechanism sliders 310 are slidingly arranged on each vertical linear guide 202, Figure 3 That is, the side slip base 3 structure schematic diagram provided with two continuous Y mechanism sliders 310 is shown in the above technical scheme.

[0066] Two sides of the side-slip base 3 are respectively fixedly provided with Y mechanism oil cylinder connecting seats 308, a 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 freedom of the side-slip base 3, the angle-of-attack frame 5, the model support 4 and the model 6 in the Y direction (vertical direction), and the symmetrical arrangement of the vertical linear guide rails 310 and the Y mechanism servo oil cylinder 207 realizes the effect of synchronously driving the side-slip base 3 from two sides, and the up-down movement of the side-slip base 3 is more stable.

[0067] The rear part of the Y mechanism frame 201 is free of a cross beam, the front cross beam 205, the lower cross beam 209 and the connected X mechanism slider 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 5, the model support 4 and the model are met.

[0068] In the above technical scheme, the structure of the side-slip base comprises:

[0069] The side-slip base frame 301 comprises a bottom plate 311, a plurality of vertical beams 312 are fixedly arranged on the bottom plate 311, top plates 313 are fixedly arranged at upper ends of the vertical beams 312, the connected Y mechanism sliders 310 are symmetrically arranged on side surfaces of the bottom plate 311 and the top plates 313 respectively, and the Y mechanism oil cylinder connecting seats 308 are arranged on side surfaces of the top plates 313.

[0070] Four groups of telescopic positioning mechanisms 309 are arranged on an upper surface of the bottom plate 311, and the four groups of telescopic positioning mechanisms 309 are arranged in pairs on the bottom plate.

[0071] An electric cylinder 314 is arranged on the bottom plate, a Y direction fixed pin shaft 316 is rotatably connected to an end of a telescopic rod 315 of the electric cylinder 314, a fixed seat 317 is arranged close to an edge position of the bottom plate, the Y direction fixed pin shaft 316 is slidably arranged in the fixed seat 317, and a plurality of Y direction fixed holes 206 are formed in the vertical direction on two opposite inner sides of the Y mechanism 2; when the Y mechanism oil cylinder 207 cannot work or needs to be overhauled, the Y direction fixed pin shaft 309 is inserted into the Y direction fixed hole 206, so as to realize the support and positioning of the Y direction of the side-slip base 3, as shown in Figure 8 The Y direction fixed pin shaft 309 is rotatably connected to the telescopic rod 315 of the electric cylinder 314, and the Y direction fixed pin shaft 309 is slidably arranged in the fixed seat, and the Y direction fixed pin shaft 309 is inserted into or separated from the Y direction fixed hole by the driving of the electric cylinder 314.

[0072] In the above technical solution, the lower end of the X mechanism 1 is provided with an X mechanism lower crossbeam 106, the front end and the rear end of the X mechanism are respectively provided with an X mechanism front crossbeam 108 and an X mechanism rear crossbeam 105, and the lower end of the X mechanism 1 is further provided with six lower bases 107; the upper end of the X mechanism 1 is provided with an X mechanism connecting surface 104.

[0073] The lower end of the Y mechanism 2 is provided with a Y mechanism lower crossbeam 209, the front end of the Y mechanism 2 is provided with a Y mechanism front crossbeam 205, and the upper end of the Y mechanism 2 is provided with a Y mechanism support connecting surface 208.

[0074] When the middle support connecting model of the attack angle mechanism is used (that is, the curved knife support is installed in the attack angle mechanism, and the curved knife support is used to support the model), the load and length of the model are greatly limited. Taking the middle support of a four-degree-of-freedom mechanism in a certain 2-meter-level wind tunnel as an example, the upward lift (force perpendicular to the model axis direction) and the axial force (force parallel to the model axis direction) or the resultant force of the two are not more than 50,000 N, and the length of the supported model should not be more than 4 m.

[0075] The four-degree-of-freedom mechanism side sliding base connecting model support provided by the present application can support a model with a length of 8.3 m, and the maximum axial force borne by the model reaches 20,000 N, and can realize reliable connection and support of multiple series components, and the maximum axial force borne by the support device reaches 100,000 N. Such a model cannot be supported by a traditional middle support.

[0076] The number of devices and the scale of processing described herein are used to simplify the present application. The application, modification and change of the present application are obvious to those skilled in the art.

[0077] Although the embodiments of the present application have been disclosed as above, they are not limited to the application and the embodiments 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, and 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 for connecting a model stand with a four-degree-of-freedom mechanism side-slip base, characterized by, The utility model relates to a kind of model slide mechanism, including: X mechanism; Y mechanism, which is arranged inside the X mechanism, and the Y mechanism is slidingly connected with the X mechanism in the horizontal direction; Side slide base, which is arranged inside the Y mechanism, and the side slide base is slidingly connected with the Y mechanism in the vertical direction; Model support, which is fixed on the connecting platform of the side slide base, and the upper end of the model support supports a model; Power mechanism is arranged between the X mechanism and the Y mechanism, and between the Y mechanism and the side slide base; The structure of the model support includes: Lower transition block, which is fixedly installed on the connecting platform; Lower support, which includes four columns, wherein two columns in the width direction are fixedly provided with crossbeams between the upper ends, two columns in the length direction are connected with lower beams between the lower ends, two columns in the length direction are connected with upper beams between the upper ends, and the columns are fixedly connected with the lower transition block; Support platform, which is arranged on the upper ends of the two crossbeams; Multiple support columns, which are fixedly arranged in pairs on the support platform, and the model is fixed on the upper end of the support column.

2. The structure employing a four-degree-of-freedom mechanism side-slip base connection model stand according to claim 1, characterized in that, Two oblique pull rods are fixed between the two columns in the length direction.

3. The structure employing a four-degree-of-freedom mechanism side-slip base connection model stand according to claim 1, characterized in that, The cross section of the support column is a blade structure.

4. The structure employing a four-degree-of-freedom mechanism side-slip base connection model stand according to claim 1, characterized in that, The structure of the X mechanism includes: X mechanism frame, which is a rectangular hollow frame without crossbeam at the top, two groups of horizontal linear guides are respectively installed on the left and right sides inside the X mechanism frame, and X mechanism servo oil cylinders are installed between the two groups of horizontal linear guides on the same side. Two groups of X mechanism sliding blocks are respectively fixed on the left and right sides of the Y mechanism, and each group of X mechanism sliding blocks is slidingly installed on the horizontal linear guide. X mechanism oil cylinder connecting seat is fixed on the outside of the Y mechanism, and the piston rod of the X mechanism servo oil cylinder is connected with the X mechanism oil cylinder connecting seat.

5. The structure employing a four-degree-of-freedom mechanism side-slip base connection model stand according to claim 1, characterized in that, The structure of the Y mechanism includes: Y mechanism frame, which is a rectangular hollow frame without crossbeam at the top and rear, two groups of vertical linear guides are respectively installed on the left and right inner sides of the Y mechanism frame, and Y mechanism servo oil cylinders are installed between the two groups of vertical linear guides on the same side. Two groups of Y mechanism sliding blocks are respectively fixed on the two sides of the side slide base, and each group of Y mechanism sliding block is slidingly installed on the vertical linear guide. Y mechanism oil cylinder connecting seat is respectively fixed on the two sides of the side slide base, and the piston rod of the Y mechanism servo oil cylinder is connected with the Y mechanism oil cylinder connecting seat.

6. The structure employing a four-degree-of-freedom mechanism side-slip base connection model stand according to claim 5, characterized by, The structure of the side slide base includes: Side slide base frame, which includes a bottom plate, multiple vertical beams are fixedly arranged on the bottom plate, a top plate is fixedly arranged on the upper end of the vertical beam, the Y mechanism sliding blocks are respectively symmetrically installed on the side of the bottom plate and the top plate, and the Y mechanism oil cylinder connecting seat is installed on the side of the top plate. Four groups of telescopic positioning mechanisms are installed on the upper surface of the bottom plate, and the four groups of telescopic positioning mechanisms are arranged in pairs on the bottom plate, and the structure of each group of telescopic positioning mechanism includes: Electric cylinder, the Y direction fixed pin shaft is rotatably connected at the telescopic rod end of the electric cylinder, a fixed seat is installed near the edge position of the bottom plate, the Y direction fixed pin shaft is slidingly arranged in the fixed seat, and multiple Y direction fixed holes are formed in the vertical direction on the two opposite inner sides of the Y mechanism.

7. The structure employing a four-degree-of-freedom mechanism side-slip base connection model stand according to claim 1, characterized by, The lower end of the X mechanism is provided with an X mechanism lower crossbeam, the front end and the rear end of the X mechanism are respectively provided with an X mechanism front crossbeam and an X mechanism rear crossbeam, and the lower end of the X mechanism is further provided with a plurality of lower bases. The lower end of the Y mechanism is provided with a Y mechanism lower crossbeam, the front end of the Y mechanism is provided with a Y mechanism front crossbeam, and the upper end of the Y mechanism is provided with a Y mechanism support connecting surface.

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