A method for fixing a square structure

Abstract

The present invention provides a method for fixing a square structure, comprising: obtaining a cross-section perpendicular to the axial direction of the square structure, setting a plurality of connection points on the cross-section; determining the center of the cross-section based on the plurality of connection points; determining a corresponding fixing point for each connection point based on the plurality of connection points and the center; and fixing the square structure based on each fixing point. The present invention is suitable for use in complex mechanical environments and high-speed vibration conditions. It employs an X-shaped four-point screw connection method to secure the square structure in the application environment, thereby avoiding stress concentration and reducing vibration amplification. The method provides a stable connection, uniform stress distribution, and reduced vibration amplification.

Description

Technical Field

[0001] The invention belongs to the field of structural design and relates to a fixing method of a square structure. Background Art

[0002] The fixing methods used for square structures in complex mechanical environments currently mainly adopt two-point "I"-shaped or multi-point "I"-shaped fixing methods at home and abroad. These two fixing methods are prone to stress concentration and uneven distribution in complex mechanical environments. The fixing points of the structure are prone to cracks, low durability, local vibration amplification and other unfavorable factors. They are not the best fixing methods. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for fixing a square structure in order to solve the problems existing in the prior art and fix the square structure in an application environment so as to avoid stress concentration and reduce vibration amplification.

[0004] The technical solution to the problem solved by the present invention is: a method for fixing a square structure, comprising:

[0005] Obtaining a cross section perpendicular to the axial direction of the square structure, and setting a plurality of connection points on the cross section;

[0006] determining a center of the cross section based on a plurality of the connection points;

[0007] Determining a fixed point corresponding to each connection point according to the plurality of connection points and the center;

[0008] The square structure is fixed based on various fixing points.

[0009] Wherein, a plurality of connection points are set on the cross section, including:

[0010] Four connection points are arranged at equal intervals on the cross section.

[0011] Wherein, determining the center of the cross section based on the plurality of connection points comprises:

[0012] Connecting each of the connection points with the remaining connection points in a straight line;

[0013] Determine the intersection of the straight lines as the center of the section.

[0014] The step of determining the fixed points corresponding to the respective connection points according to the plurality of connection points and the center includes:

[0015] Setting normal surfaces corresponding to the respective connection points based on the plurality of connection points and the center;

[0016] A fixed point corresponding to each normal plane is set on each normal plane toward the center direction of the cross section.

[0017] The step of setting the normal planes corresponding to the respective connection points based on the plurality of connection points and the center includes:

[0018] Determine the straight line between each connection point and the center as the radius;

[0019] A plane perpendicular to the radius is set at the connection point as a normal plane.

[0020] The square structure is fixed based on various fixing points, including:

[0021] Each fixing point of the square structure is connected to each fixing point in the fixed environment by screws.

[0022] Wherein, the fixing piece at the fixing point is a connecting threaded hole.

[0023] An embodiment of the present invention provides a method for fixing a square structure, which obtains a cross-section perpendicular to the axial direction of the square structure and sets multiple connection points on the cross-section; determines the center of the cross-section based on the multiple connection points; determines the fixed points corresponding to each connection point based on the multiple connection points and the center; and fixes the square structure based on each fixed point. The method is suitable for complex mechanical environments and high-speed vibration conditions, and adopts an X-shaped four-point screw connection and fixing method to fix the square structure in the application environment, so as to avoid stress concentration and reduce vibration amplification, and has the effects of stable connection, uniform stress distribution, and reduced vibration amplification level. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 1 is a schematic flow chart of a method for fixing a square structure provided by an embodiment of the present invention;

[0025] Figure 2 This is a diagram illustrating an X-shaped four-point connection fixation method for a square structure provided by an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the entire square structure in the method for fixing a square structure provided by an embodiment of the present invention;

[0027] Figure 4 yes Figure 3 Right side view of the whole structure of the middle square body;

[0028] Figure 5 yes Figure 3 Finite element model and test point diagram of the central body structure at 13G. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It will be understood that the drawings are only provided for reference and illustration purposes and are not intended to limit the present invention. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0030] The embodiment of the present invention provides a method for fixing a square structure. Figure 1 The fixing method of the square structure specifically includes the following contents:

[0031] S101: Obtain a cross section perpendicular to the axial direction of the square structure, and set a plurality of connection points on the cross section;

[0032] In this step, four connection points are set at equal intervals on the cross section. The equal intervals between the four connection points can evenly distribute the fixing force of the square structure.

[0033] S102: Determine the center of the cross section based on the plurality of connection points;

[0034] In this step, the center of the cross section is determined using the X-shaped four-point cross-centripetal fixation method, that is, each connection point is connected to the remaining connection points with a straight line; the intersection of the straight lines is determined as the center of the cross section;

[0035] See also Figure 2 It can be understood that, in this embodiment, there are four connection points, and one of the four connection points is determined to be connected to the remaining three connection points in a straight line.

[0036] S103: Determine a fixed point corresponding to each connection point according to the plurality of connection points and the center;

[0037] In this step, a normal plane corresponding to each connection point is set based on the multiple connection points and the center; wherein, the straight line between each connection point and the center is determined as the radius, and a plane perpendicular to the radius is set at the connection point as the normal plane.

[0038] It is understood that in this embodiment, there are four connection points, and thus four corresponding normal planes. A fixing point corresponding to each normal plane is set on each of the four normal planes and oriented toward the center of the cross section. The fixing members at the fixing points are threaded connection holes, i.e., threaded connection holes are set toward the center.

[0039] S104: Fixing the square structure based on various fixing points.

[0040] In this step, the fixing members at the fixing points are connecting threaded holes, and the fixing points of the square structure are connected to the fixing points in the fixed environment by screws.

[0041] From the above description, it can be seen that the fixing method of the square structure provided in the embodiment of the present invention is suitable for complex mechanical environments and high-speed vibration conditions. It adopts a cross-sectional X-shaped four-point screw connection and fixing method to fix the square structure in the application environment, thereby achieving the purpose of avoiding stress concentration and reducing vibration amplification. It has the effects of stable connection, uniform stress distribution, and reduced vibration amplification level.

[0042] In one embodiment of the present invention, a fixing method for the above-mentioned square structure is provided, which specifically includes the following contents:

[0043] like Figure 3 The cube structure shown has four connection points set on the cross section perpendicular to the axial direction of the square structure; the intersection of the straight lines connecting the cross section connection points is intercepted, the intersection point is taken as the center of the circle, the distance from the connection point to the intersection point is taken as the radius, and the normal plane perpendicular to the radius of the connection point is taken.

[0044] like Figure 4 As shown, each of the four normal planes has its own corresponding fixing point, positioned toward the center of the cross section. A threaded hole is designed toward the intersection of the normal planes of each connection point. Similarly adapted mounting holes are designed from the fixing points, and screws are used to connect the cube to the environmental fixing point.

[0045] exist Figure 3 Six test points are selected on the cube structure shown in the figure, and the acceleration response root mean square G of each test point is measured for random vibration. The stress analysis cloud diagram is obtained when the random vibration root mean square value of the six test points on the cube structure is 13G, as shown in the figure below. Figure 5 shown.

[0046] The acceleration responses of the six test points to random vibration in the X, Y, and Z directions are shown in Table 1.

[0047] Table 1 RMS acceleration response of each measuring point

[0048]

[0049]

[0050] It can be seen from this that the fixing method of the square structure provided in the embodiment of the present invention is suitable for complex mechanical environments and high-speed vibration conditions. It adopts a cross-sectional X-shaped four-point screw connection and fixing method to fix the square structure in the application environment, thereby achieving the purpose of avoiding stress concentration and reducing vibration amplification. It has the effects of stable connection, uniform stress distribution, and reduced vibration amplification level.

[0051] The present invention is not limited to the above-mentioned optional embodiments. Anyone can derive various other forms of products under the guidance of the present invention. However, regardless of any changes in shape or structure, any technical solution that falls within the scope of the claims of the present invention falls within the scope of protection of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

Claims

1. A method for fixing a square structure, characterized in that: include: Obtaining a cross section perpendicular to the axial direction of the square structure, and setting a plurality of connection points on the cross section; determining a center of the cross section based on a plurality of the connection points; Determining a fixed point corresponding to each connection point according to the plurality of connection points and the center; Fixing the square structure based on various fixing points; Wherein, a plurality of connection points are set on the cross section, including: Disposing four connection points at equal intervals on the cross section; Determining the center of the cross section based on the plurality of connection points comprises: Connecting each of the connection points with the remaining connection points in a straight line; Determine the intersection of the straight lines as the center of the section; Determining fixed points corresponding to the respective connection points according to the plurality of connection points and the center includes: Setting normal surfaces corresponding to the respective connection points based on the plurality of connection points and the center; A fixed point corresponding to each normal plane is set on each normal plane toward the center direction of the cross section.

2. The method for fixing a square structure according to claim 1, characterized in that: The step of setting normal surfaces corresponding to the respective connection points based on the plurality of connection points and the center includes: Determine the straight line between each connection point and the center as the radius; A plane perpendicular to the radius is set at the connection point as a normal plane.

3. The method for fixing a square structure according to claim 1, wherein: Fixing the square structure based on various fixing points includes: Each fixing point of the square structure is connected to each fixing point in the fixed environment by screws.

4. The method for fixing a square structure according to claim 1, wherein: The fixing piece at the fixing point is a connecting threaded hole.

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