CN116067567A - Gravity center detection system and method - Google Patents
Gravity center detection system and method Download PDFInfo
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- CN116067567A CN116067567A CN202211723503.2A CN202211723503A CN116067567A CN 116067567 A CN116067567 A CN 116067567A CN 202211723503 A CN202211723503 A CN 202211723503A CN 116067567 A CN116067567 A CN 116067567A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/12—Static balancing; Determining position of centre of gravity
- G01M1/122—Determining position of centre of gravity
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Abstract
The invention discloses a gravity center detection system and a gravity center detection method. The system comprises: the electronic scale and the detection tool comprise a base, a first supporting piece, a second supporting piece, a third supporting piece and a limiting piece, wherein the first supporting piece, the second supporting piece, the third supporting piece and the limiting piece are arranged at the bottom of the base, the orthographic projection of the centers of the three supporting pieces on the upper surface of the base is isosceles triangle, the isosceles triangle uses the straight line where the centers of the second supporting piece and the third supporting piece are located as the bottom edge, the center of the limiting piece is located at the bottom edge, the bottom of the first supporting piece is placed at the center of the electronic scale, the second supporting piece and the third supporting piece are located outside the area where the electronic scale is located, the base is a symmetrical graph which uses the center line of the bottom edge as a symmetrical axis, and the upper surface of the base is a horizontal plane. The system is simple in composition, low in manufacturing cost, beneficial to improving the detection precision and detection efficiency of the gravity center of the part, and applicable to mass detection.
Description
Technical Field
The invention belongs to the field of detection, and particularly relates to a gravity center detection system and a gravity center detection method.
Background
Rudder body parts are usually formed by combining and assembling dissimilar materials, the appearance structure is irregular, and the inner cavity is of a hollow structure, so that the gravity center of the parts is difficult to detect. At present, a weight method is generally adopted to detect the gravity center of a rudder part, an object to be detected is placed on a bearing platform with three or four weighing sensors, the gravity center of the object is measured by measuring the stress difference of the sensors, and meanwhile, a weight or a weight with known weight is placed at a specific position to determine the accuracy of the gravity center measuring device. The method not only needs a large number of weights, but also estimates the weight through the measurement result of the device, so that the system deviation of the device is difficult to find, the accuracy is low, the measurement efficiency is low, and the method is not suitable for mass detection.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a gravity center detection system and method. The system is simple in composition, low in manufacturing cost, beneficial to improving the detection precision and detection efficiency of the gravity center of the part, and applicable to mass detection.
In one aspect of the invention, a center of gravity detection system is provided. According to an embodiment of the invention, the system comprises:
an electronic scale;
the detection tool comprises a base, a first supporting piece, a second supporting piece, a third supporting piece and a limiting piece, wherein the first supporting piece, the second supporting piece, the third supporting piece and the limiting piece are arranged at the bottom of the base, the orthographic projection of the centers of the three supporting pieces on the upper surface of the base is isosceles triangle, the straight line where the centers of the second supporting piece and the third supporting piece are located is taken as the bottom edge, the center of the limiting piece is located on the bottom edge, the bottom of the first supporting piece is arranged at the center of the electronic scale, the second supporting piece and the third supporting piece are located outside the area where the electronic scale is located, the base is a symmetrical graph which takes the central line of the bottom edge as a symmetrical axis, and the upper surface of the base is a horizontal plane.
According to the gravity center detection system provided by the embodiment of the invention, the base is controlled to be in an axisymmetric graph taking the center line of the bottom edge as a symmetry axis, and meanwhile, the orthographic projection of the three support shafts on the base is in an isosceles triangle shape, so that the second support shaft and the third support shaft are subjected to force balance under the action of the base after the base and the electronic scale are assembled; by arranging the limiting piece, the falling of the part to be detected is avoided, the position of one side of the part to be detected can be limited, and therefore the distance from the center of gravity of the part to be detected to the one side of the part to be detected can be obtained; by introducing the electronic scale, the weight of the part to be measured can be directly read, and the acting force of the part to be measured on the first support rod can be directly read through the electronic scale when the part to be measured is placed on the horizontal base, so that the distance from the center of gravity of the part to be measured to the reference line can be calculated through a moment balance formula on the premise of knowing the distance from the first support member to the reference line according to the moment balance principle by taking the straight line where the centers of the second support member, the limiting member and the third support member are located as the reference line, and the distance from the center of gravity of the part to be measured to one side of the part to be measured can be further obtained. The system is simple in composition, low in manufacturing cost, beneficial to improving the detection precision and detection efficiency of the gravity center of the part, and particularly suitable for mass detection.
In addition, the gravity center detection system according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the invention, the support heights of the first, second and third supports to the base are independently adjustable, respectively.
In some embodiments of the invention, the first support, the second support, and the third support are each independently threaded with the base.
In some embodiments of the invention, the limiting member is connected to the base in a pluggable manner.
In some embodiments of the invention, the base is an isosceles triangle with uniform thickness.
In some embodiments of the invention, the system further comprises: and the bottom of the second supporting piece and the bottom of the third supporting piece are arranged on the cushion block.
In some embodiments of the invention, the spacer is a V-iron.
In some embodiments of the invention, the system further comprises: the electronic scale and the cushion block are arranged on the horizontal platform.
In yet another aspect of the present invention, a method for detecting a center of gravity using the center of gravity detection system described above is provided. According to an embodiment of the invention, the method comprises:
(1) Leveling and calibrating an electronic scale, zeroing, placing a part to be measured on the electronic scale for weighing, and recording the value of the electronic scale as G at the moment;
(2) The electronic scale is emptied, a first supporting piece of the detection tool is placed in the center of the electronic scale, the supporting heights of the first supporting piece, the second supporting piece and the third supporting piece are adjusted, the upper surface of the base is kept horizontal, and zero setting is conducted on the electronic scale;
(3) Placing the part to be tested on the base to enable the first edge of the part to be tested to be abutted against the limiting piece, and recording that the electronic scale value is G at the moment 1 ；
(4) The part to be measured is horizontally turned over for 180 degrees and then is placed on the base again, the first edge is abutted against the limiting piece, and the electronic scale value G is recorded at the moment 2 ；
(5) Calculating the vertical distance H between the gravity center of the part to be measured and the first side 1 The method comprises the following steps:
and L is the distance from the center of the first support shaft to the bottom edge, and r is the distance from the first edge to the bottom edge.
The method for detecting the center of gravity according to the above embodiment of the present invention has all the features and effects described in the above center of gravity detection system, and will not be described herein. In general, the method is simple to operate, has higher detection precision and detection efficiency, and is suitable for mass detection.
In addition, the method for detecting the center of gravity according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the invention, the method further comprises: (6) Placing the part to be tested on the base to enable the second edge of the part to be tested to be abutted against the limiting piece, and recording that the electronic scale value is G at the moment 3 The method comprises the steps of carrying out a first treatment on the surface of the (7) The part to be measured is horizontally turned over for 180 degrees and then is placed on the base again, the second edge is abutted against the limiting piece, and the electronic scale value G is recorded at the moment 4 The method comprises the steps of carrying out a first treatment on the surface of the (8) Calculating the vertical distance H between the gravity center of the part to be measured and the second side 2 The method comprises the following steps:
(9) Based on the H 1 And said H 2 And judging the specific position of the gravity center of the part to be tested.
In some embodiments of the present invention, in step (2), the first support member of the detection tool is placed at the center of the electronic scale, the second support member and the third support member are placed on a pad, and respective support heights of the first support member, the second support member and the third support member are adjusted so that the upper surface of the base is kept horizontal.
In some embodiments of the present invention, in step (2), before zeroing the electronic scale, the method further includes: and placing the level gauge on the base along different directions for level detection.
In some embodiments of the invention, the electronic scale and the spacer are placed on the same horizontal platform.
In some embodiments of the present invention, the midpoint of the side contacting the limiting member coincides with the midpoint of the bottom side before and after the part to be measured is turned horizontally 180 °.
In some embodiments of the present invention, the part to be tested is a rudder.
In some embodiments of the invention, the part under test has a size not greater than the size of the base.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a center of gravity detection system according to one embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a detection tool according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method of detecting center of gravity according to one embodiment of the invention;
FIG. 4 is a schematic diagram of the use structure of a center of gravity detection system according to one embodiment of the present invention;
FIG. 5 is a coordinate analysis diagram of a center of gravity detection system according to one embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center," "thickness," "upper," "lower," "front," "rear," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In one aspect of the invention, a center of gravity detection system is provided. As will be appreciated in connection with fig. 1-2, according to an embodiment of the present invention, the system includes: the electronic scale 10 and the detection tool 20 comprise a base 24, a first supporting piece 21, a second supporting piece 22, a third supporting piece 23 and a limiting piece 25 which are arranged at the bottom of the base 24, wherein the orthographic projection of the centers of the three supporting pieces on the upper surface of the base 24 is an isosceles triangle, the isosceles triangle takes the straight line of the centers of the second supporting piece 22 and the third supporting piece 23 as the bottom edge, the center of the limiting piece 25 is positioned on the bottom edge, the bottom of the first supporting piece 21 is positioned at the center of the electronic scale 10, the second supporting piece 22 and the third supporting piece 23 are positioned outside the area of the electronic scale 10, the base 24 is a symmetrical graph taking the central line of the bottom edge as a symmetrical axis, and the upper surface of the base 24 is a horizontal plane.
According to the gravity center detection system provided by the embodiment of the invention, the base is controlled to be in an axisymmetric graph taking the center line of the bottom edge as a symmetry axis, and meanwhile, the orthographic projection of the three support shafts on the base is in an isosceles triangle shape, so that the second support shaft and the third support shaft are subjected to force balance under the action of the base after the base and the electronic scale are assembled; by arranging the limiting piece, the falling of the part to be detected is avoided, the position of one side of the part to be detected can be limited, and therefore the distance from the center of gravity of the part to be detected to the one side of the part to be detected can be obtained; by introducing the electronic scale, the weight of the part to be measured can be directly read, and the acting force of the part to be measured on the first support rod can be directly read through the electronic scale when the part to be measured is placed on the horizontal base, so that the distance from the center of gravity of the part to be measured to the reference line can be calculated through a moment balance formula on the premise of knowing the distance from the first support member to the reference line according to the moment balance principle by taking the straight line where the centers of the second support member, the limiting member and the third support member are located as the reference line, and the distance from the center of gravity of the part to be measured to one side of the part to be measured can be further obtained. The system is simple in composition, low in manufacturing cost, beneficial to improving the detection precision and detection efficiency of the gravity center of the part, and particularly suitable for mass detection.
According to an embodiment of the present invention, as understood in conjunction with fig. 3 to 4, when the gravity center detection system according to the above embodiment of the present invention is used for gravity center detection, it may include: (1) Leveling the electronic scale 10, zeroing after calibration, placing the part 30 to be measured on the electronic scale 10 for weighing, and recording the electronic scale value as G at the moment; (2) The electronic scale 10 is emptied, the first supporting piece 21 of the detection tool 20 is placed in the center of the electronic scale 10, the supporting heights of the first supporting piece 21, the second supporting piece 22 and the third supporting piece 23 are adjusted, the upper surface of the base 24 is kept horizontal, and zero setting is carried out on the electronic scale 10; (3) Placing the part 30 to be tested on the base 24 to enable the first edge of the part 30 to be tested to abut against the limiting piece 25, and recording the electronic informationThe scale 10 has a value G 1 The method comprises the steps of carrying out a first treatment on the surface of the (4) The part 30 to be measured is horizontally turned over by 180 degrees and then is placed on the base 24 again, the first edge 31 is abutted against the limiting piece, and the numerical value G of the electronic scale 10 is recorded at the moment 2 The method comprises the steps of carrying out a first treatment on the surface of the (5) Calculating the vertical distance H from the center of gravity of the part to be measured to the first side 1 The method comprises the following steps:
wherein, the line segment where the center of the second support 22 and the center of the third support 23 are located is taken as the bottom edge, L is the distance from the center of the first support shaft 21 to the bottom edge, and r is the distance from the first edge 31 to the bottom edge. Further, the same operation may be performed on the second side of the part 30 to be tested to obtain a vertical distance from the center of gravity of the part to be tested to the second side, and the specific position of the center of gravity is determined based on the vertical distance from the center of gravity to the first side and the vertical distance from the center of gravity to the second side.
According to an embodiment of the present invention, as understood in conjunction with fig. 1, the supporting heights of the first, second and third supporting members 21, 22 and 23 with respect to the base 24 may be independently adjustable, respectively, and when the first supporting member 21 is located on the electronic scale 10 while the second and third supporting members 22 and 23 are located outside the area of the electronic scale 10, the upper surface of the base may be maintained horizontal by adjusting the heights of the first, second and third supporting members 21, 22 and 23, thereby further improving the accuracy of the measurement result. In addition, the connection manner of the first support 21, the second support 22 and the third support 23 with the base 24 is not particularly limited in the present invention, and a person skilled in the art can flexibly select the connection manner according to practical situations, for example, according to some specific examples of the present invention, the first support 21, the second support 22 and the third support 23 may be respectively and independently connected with the base 24 through threads, at this time, the surfaces of the supports may be provided with threads, and the base may be provided with screw holes corresponding to the supports, which may be through holes or blind holes, thereby not only being beneficial to ensuring the connection stability of the supports with the base, but also being capable of adjusting the relative height between the supports and the lower surface of the base through rotation of the supports, and ensuring that the upper surface of the base maintains a level, which is convenient, flexible and fast. It should be noted that, in the invention, whether the base is horizontal or not can be judged by the level meter in an auxiliary way, specifically, the level meter can be placed along different directions of the base, the position of the bubble in the level meter is observed, if the bubble is kept centered in different directions, the base is proved to be horizontal, and if the bubble is not centered, the height of the supporting shaft can be adjusted according to the trend of the bubble until the bubble is centered, and the base is horizontal.
According to the embodiment of the present invention, as understood with reference to fig. 2, the specific structure of the limiting member 25 and the connection manner with the base 24 are not particularly limited, and a person skilled in the art can flexibly select the specific structure according to practical situations, for example, according to some specific examples of the present invention, the limiting member 25 may include at least two positioning pins, the base 24 may be provided with positioning holes matched with the positioning pins, and the limiting member 25 may be connected with the base 24 in a plugging manner, thereby not only realizing a better positioning effect, but also being beneficial to simplifying the structure of the detection tool and reducing the manufacturing cost of the tool.
According to the embodiment of the invention, as will be understood with reference to fig. 2, the base 24 may be an isosceles triangle with uniform thickness, the first supporting member 21 may be disposed at a top corner of the triangle, and the second supporting member 22 and the third supporting member 23 may be disposed at two bottom corners of the triangle, respectively, so that accuracy of the detection result is further improved, and meanwhile, processing difficulty of the detection tool is reduced. The corners of the waist triangular plates can be corners formed by two sides and a common end point or fillets.
According to an embodiment of the present invention, as will be understood with reference to fig. 1, the system may further include a spacer (not shown) having a height that is identical to or close to that of the electronic scale, and when the heights of the first support 21, the second support 22, and the third support 23 are identical or close, after the first support 21 is placed on the electronic scale 10, the bottoms of the second support 22 and the third support 23 may be placed on the spacer, and then the heights of the first support 21 or the second support 22 and the third support 23 may be finely adjusted, thereby further improving the leveling efficiency. Further, according to some specific examples of the present invention, the spacer may be a V-shaped iron, so that the levelness of the base may be further determined or improved according to the relative distance between the V-shaped iron and the base.
As understood in connection with fig. 1, the system may further comprise, in accordance with an embodiment of the present invention: the horizontal platform (not shown), the electronic scale 10 and the cushion block can be placed on the horizontal platform, so that the base can be further ensured to be in a horizontal balance state, and the detection accuracy is improved.
In yet another aspect of the present invention, a method for detecting a center of gravity using the center of gravity detection system described above is provided. As understood in connection with fig. 3, the method according to an embodiment of the present invention comprises:
s100: leveling and calibrating the electronic scale, zeroing, placing the part to be measured on the electronic scale for weighing, and recording that the electronic scale value is G at the moment
According to the embodiment of the invention, after the electronic scale 10 is leveled, calibrated and zeroed, the total weight of the measured part is G.
S200: the electronic scale is emptied, the first supporting piece of the detection tool is placed in the center of the electronic scale, the supporting heights of the first supporting piece, the second supporting piece and the third supporting piece are adjusted, the upper surface of the base is kept horizontal, and zero setting is carried out on the electronic scale
According to the embodiment of the present invention, as will be understood with reference to fig. 1 to 2, after the first support 21 of the inspection tool 20 is placed at the center of the electronic scale 10, the second support 22 and the third support 23 may be placed on the spacer, and the support heights of the first support 21, the second support 22 and the third support 23 may be adjusted so that the upper surface of the base 24 is kept horizontal. The cushion block can be placed on the same horizontal platform with the electronic scale 10, and the height of the cushion block can be close to the height of the electronic scale, so that the support piece can be only subjected to fine adjustment to realize the level of the base, and the leveling time and difficulty are reduced. According to some embodiments of the present invention, a level may be placed on the base 24 in different orientations during leveling of the base 24 to provide level detection, and the upper surface of the base may be verified as being level when the level is maintained in all orientations.
According to an embodiment of the present invention, as will be understood with reference to fig. 1, the electronic scale 10 is zeroed after the upper surface of the base 24 is kept horizontal, so that after the part to be measured is placed on the base 24, the value displayed by the electronic scale can be considered as the acting force of the part to be measured on the first supporting member 21.
S300: placing the part to be measured on a base, enabling the first edge of the part to be measured to abut against a limiting piece, and recording that the electronic scale value is G at the moment 1
According to an embodiment of the present invention, as will be understood with reference to fig. 4, after zeroing the electronic scale 10, the part 30 to be measured is placed on the base 24, such that the first edge 31 of the part 30 to be measured abuts against the limiting member 25, at this time, the first surface of the part 30 to be measured faces upward, at least a portion of the second surface disposed opposite to the first surface is attached to the horizontal base, at this time, the electronic scale 10 displays a value of the acting force (G 1 ) Taking the line segment where the center of the second support 22 and the center of the third support 23 are located as the bottom edges (i.e. the datum lines), the center of the limiting member 25 is located on the bottom edge, so that the distance from the center of gravity of the part 30 to the first edge 31 of the part to be measured is the difference between the distance from the center of gravity of the part 30 to the bottom edge and the distance from the first edge 31 to the bottom edge, when the distance from the first edge 31 to the bottom edge is known, the distance from the center of gravity of the part 30 to be measured to the bottom edge can be obtained through weighing calculation, and then the distance from the center of gravity of the part 30 to be measured to the first edge 31 of the part to be measured is obtained.
S400: the part to be measured is horizontally turned over by 180 degrees and then is placed on the base again, the first edge is abutted against the limiting piece, and the electronic scale value G is recorded at the moment 2
According to the embodiment of the invention, the part to be measured is turned horizontally 180 degrees, even though the first edge 31 of the part to be measured 30 is still abutted against the limiting piece 25, the second surface of the part to be measured 30 is upwards, at least a part of the first surface opposite to the second surface is attached to the horizontal base, and then the part to be measured is weighed according to the same method, and the electronic scale value G is recorded at the moment 2 (i.e. the force of the turned part to be tested against the first support member), the average force applied to the first support member 21 before and after turning the part to be tested is denoted as F 1 Then, the first and second data are obtained,
F 1 ＝(G 1 +G 2 )÷2。
according to the embodiment of the invention, when the part to be tested is horizontally turned 180 degrees, the first edges before and after turning are preferably still positioned in the position before turning, so that the detection precision can be further improved.
S500: calculating the vertical distance H from the center of gravity of the part to be measured to the first side 1
According to an embodiment of the invention, the vertical distance H from the center of gravity to the first side of the part to be measured 1 The method comprises the following steps:
where L is the distance from the center of the first support shaft 21 to the bottom side, and r is the distance from the first side 31 to the bottom side. For easy understanding, the following description will be made with reference to fig. 5, in which the first support 21, the second support 22, and the third support 23 are load cell support points, and are placed in an x0y coordinate system, and the average stress values of the three support points before and after the part to be tested is turned over are respectively denoted as F 1 、F 2 、F 3 The gravity center of the part to be measured is marked as G (x, y), the total mass of the part to be measured is G, according to the statics principle,
G＝F 1 +F 2 +F 3 。
according to the moment balance principle, the x-axis is taken as moment, if there is,
F 1 ×y 1 ＝G×y。
thereby the processing time of the product is reduced,
wherein y is 1 Is the distance from the center of the first support shaft to the x-axis (i.e., y 1 Y is the distance from the center of gravity of the part to be measured to the x-axis (i.e., the distance from the center of gravity of the part to be measured to the bottom edge), and y 1 =l and F 1 ＝(G 1 +G 2 ) 2 is substituted into the above formula, and there are,
in the method, the distance from the first side to the bottom side of the part to be measured is expressed as r, and then the vertical distance H from the center of gravity of the part to be measured to the first side of the part to be measured 1 In order to achieve this, the first and second,
the method for detecting the center of gravity according to the above embodiment of the present invention has all the features and effects described in the above center of gravity detection system, and will not be described herein. In general, the method is simple to operate, has higher detection precision and detection efficiency, and is suitable for mass detection.
As understood in connection with fig. 4, the method may further comprise:
s600: placing the part to be measured on a base, enabling the second side of the part to be measured to abut against a limiting piece, and recording that the electronic scale value is G at the moment 3 ；
S700: the part to be measured is horizontally turned over by 180 degrees and then is placed on the base again, the second side is abutted against the limiting piece, and the electronic scale value G is recorded at the moment 4 ；
S800: calculating the vertical distance H from the center of gravity of the part to be measured to the second side 2 The method comprises the following steps:
s900: based on H 1 And H 2 And judging the specific position of the gravity center of the part to be tested.
According to the embodiment of the present invention, the second side (shown as 32 in fig. 4) of the part 30 to be measured is abutted against the limiting member 25, and the vertical distance from the center of gravity of the part to be measured to the second side can be calculated according to the above method. Wherein, it should be noted that the first side and the second side of the part to be tested may be non-parallel sides, i.e. the first side and the second sideThe second edges or extensions intersect, and thus may also be dependent on H 1 And H 2 And obtaining the specific position of the gravity center of the part to be measured.
According to the embodiment of the invention, in steps S300, S400, S600 and S700, the midpoint of the side (e.g. the first side and/or the second side) of the part to be tested, which contacts the limiting member, may coincide with the midpoint of the bottom side, thereby being beneficial to further improving the stability and accuracy of the detection result.
According to the embodiment of the invention, as will be understood with reference to fig. 4, the dimension of the part to be measured 30 may be no greater than the dimension of the base 24, so that the projection of the part to be measured on the base is always located in the base during the weighing detection process, which is beneficial to improving the detection precision and the reliability of the calculation result. In addition, according to some specific examples of the present invention, the part to be tested may be a rudder body.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A center of gravity detection system, comprising:
an electronic scale;
the detection tool comprises a base, a first supporting piece, a second supporting piece, a third supporting piece and a limiting piece, wherein the first supporting piece, the second supporting piece, the third supporting piece and the limiting piece are arranged at the bottom of the base, the orthographic projection of the centers of the three supporting pieces on the upper surface of the base is isosceles triangle, the straight line where the centers of the second supporting piece and the third supporting piece are located is taken as the bottom edge, the center of the limiting piece is located on the bottom edge, the bottom of the first supporting piece is arranged at the center of the electronic scale, the second supporting piece and the third supporting piece are located outside the area where the electronic scale is located, the base is a symmetrical graph which takes the central line of the bottom edge as a symmetrical axis, and the upper surface of the base is a horizontal plane.
2. The gravity center detection system according to claim 1, wherein support heights of the first support, the second support, and the third support to the base are independently adjustable, respectively; and/or the number of the groups of groups,
the first support, the second support and the third support are respectively and independently connected with the base through threads.
3. The center of gravity sensing system according to claim 1, wherein the stop is removably coupled to the base; and/or the base is an isosceles triangle with uniform thickness.
4. A gravity center detection system according to any one of claims 1 to 3, further comprising: the bottom of the second supporting piece and the bottom of the third supporting piece are arranged on the cushion block,
optionally, the spacer is V-shaped iron.
5. The center of gravity detection system according to claim 4, further comprising: the electronic scale and the cushion block are arranged on the horizontal platform.
6. A method of detecting a center of gravity using the center of gravity detection system according to any one of claims 1 to 5, comprising:
(1) Leveling and calibrating an electronic scale, zeroing, placing a part to be measured on the electronic scale for weighing, and recording the value of the electronic scale as G at the moment;
(2) The electronic scale is emptied, a first supporting piece of the detection tool is placed in the center of the electronic scale, the supporting heights of the first supporting piece, the second supporting piece and the third supporting piece are adjusted, the upper surface of the base is kept horizontal, and zero setting is conducted on the electronic scale;
(3) Placing the part to be tested on the base to enable the first edge of the part to be tested to be abutted against the limiting piece, and recording that the electronic scale value is G at the moment 1 ；
(4) The part to be measured is horizontally turned over for 180 degrees and then is placed on the base again, the first edge is abutted against the limiting piece, and the electronic scale value G is recorded at the moment 2 ；
(5) Calculating the vertical distance H between the gravity center of the part to be measured and the first side 1 The method comprises the following steps:
and L is the distance from the center of the first support shaft to the bottom edge, and r is the distance from the first edge to the bottom edge.
7. The method as recited in claim 6, further comprising:
(6) Placing the part to be tested on the base to enable the second edge of the part to be tested to be abutted against the limiting piece, and recording that the electronic scale value is G at the moment 3 ；
(7) The part to be tested is horizontally turned over for 180 degrees and then is placed on the base again, so thatThe second side is propped against the limiting piece, and the electronic scale value is recorded as G at the moment 4 ；
(8) Calculating the vertical distance H between the gravity center of the part to be measured and the second side 2 The method comprises the following steps:
(9) Based on the H 1 And said H 2 And judging the specific position of the gravity center of the part to be tested.
8. The method according to claim 6 or 7, wherein in the step (2), the first support member of the inspection tool is placed at the center of the electronic scale, the second support member and the third support member are placed on a pad, and the support heights of the first support member, the second support member and the third support member are adjusted so that the upper surface of the base is kept horizontal; and/or the number of the groups of groups,
in the step (2), before zeroing the electronic scale, the method further comprises: and placing the level gauge on the base along different directions for level detection.
9. The method of claim 6 or 7, wherein the electronic scale and the spacer are placed on the same horizontal platform; and/or the number of the groups of groups,
and enabling the middle points of one side, which is contacted with the limiting piece, of the part to be tested to be overlapped with the middle points of the bottom edges before and after the part to be tested is horizontally turned 180 degrees.
10. The method according to claim 6 or 7, wherein the part to be tested is a rudder; and/or the size of the part to be measured is not larger than the size of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211723503.2A CN116067567A (en) | 2022-12-30 | 2022-12-30 | Gravity center detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211723503.2A CN116067567A (en) | 2022-12-30 | 2022-12-30 | Gravity center detection system and method |
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| Publication Number | Publication Date |
|---|---|
| CN116067567A true CN116067567A (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211723503.2A Pending CN116067567A (en) | 2022-12-30 | 2022-12-30 | Gravity center detection system and method |
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| Country | Link |
|---|---|
| CN (1) | CN116067567A (en) |
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2022
- 2022-12-30 CN CN202211723503.2A patent/CN116067567A/en active Pending
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