Weighing type mass center automatic measuring equipment

Abstract

The invention provides weighing type mass center automatic measuring equipment, and relates to the technical field of measuring equipment. The weighing type mass center automatic measuring equipment comprises a supporting platform, a lifting supporting mechanism and a measuring mechanism, the lifting supporting mechanism and the measuring mechanism are arranged on the supporting platform, the lifting supporting mechanism comprises a lifting assembly and a bearing frame connected with the output end of the lifting assembly, the lifting assembly is used for driving the bearing frame to reciprocate in the preset direction, and the bearing frame is used for bearing a to-be-measured product; the measuring mechanism comprises three groups of measuring assemblies distributed in a triangular shape, each measuring assembly comprises a bearing table and a sensor arranged on the bearing table, the upper surface of the bearing table is used for bearing a to-be-measured product, the sensor is used for detecting the quality of the to-be-measured product, and the preset direction is perpendicular to the upper surface of the bearing table; the first through holes are used for allowing the three bearing tables to pass through. The weighing type mass center automatic measuring equipment can measure the mass, the mass center offset direction and the offset of the product to be measured at the same time, and is better in universality.

Description

Technical Field

[0001] This application relates to the field of measuring equipment technology, and more specifically, to a weighing-type automatic centroid measuring device. Background Technology

[0002] In aerospace, aviation, and maritime fields, the position of the center of gravity of some navigation-related components directly affects the product's stability, safety, and performance. However, due to factors such as the uniformity of the product's materials and the precision of its processing and assembly, the actual center of gravity may differ from the theoretical center of gravity. Therefore, the actual center of gravity of the product needs to be measured before it leaves the factory.

[0003] Current methods for measuring center of mass involve manually placing the product on the measuring fixture of the equipment and balancing it under gravity. After the product reaches a stable state, the imbalance is reflected by reading the offset of the intermediate indicator needle from the zero mark. Existing equipment mainly uses the lever-type balancing principle for measurement. The imbalance can only be read after the equipment is stable and there is no obvious swaying. The measurement is sensitive to external disturbances, has a long waiting time, and has limited functionality. Summary of the Invention

[0004] The purpose of this application is to provide a weighing-type automatic centroid measuring device to address the shortcomings of the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows: This application provides a weighing-type automatic center of mass measurement device, including: a support platform, a lifting support mechanism and a measuring mechanism disposed on the support platform. The lifting support mechanism includes a lifting component and a carrier frame connected to the output end of the lifting component. The lifting component is used to drive the carrier frame to reciprocate along a preset direction. The carrier frame is used to carry the product to be measured. The measuring mechanism includes three sets of measuring components distributed in a triangle. Each measuring component includes a load-bearing platform and a sensor disposed on the load-bearing platform. The upper surface of the load-bearing platform is used to carry the product to be measured. The sensor is used to detect the mass of the product to be measured. The preset direction is perpendicular to the upper surface of the load-bearing platform. The carrier frame is provided with a first through hole for the three load-bearing platforms to pass through.

[0006] Optionally, the load-bearing platform includes a load-bearing part and a mounting part. The mounting part is fixed on the support platform, the sensor is fixed on the mounting part, the load-bearing part is set on the sensor, and the upper surface of the load-bearing part is used to support the product to be tested.

[0007] Optionally, it also includes a weighing fixture for placing the product to be tested. The upper surface of the support frame is provided with a limiting groove communicating with the first through hole. The limiting groove is used to accommodate the weighing fixture and limit the weighing fixture. The weighing fixture is provided with a second through hole corresponding to the first through hole. When the product to be tested is placed on the weighing fixture, the product to be tested covers the second through hole.

[0008] Optionally, one of the bottom of the limiting groove and the weighing fixture is provided with a limiting pin, and the other is provided with a limiting hole corresponding to the position of the limiting pin. The limiting hole is used for the limiting pin to be inserted and to cooperate with the limiting pin. And / or, the bottom of the limiting groove is provided with a first insertion hole, and the weighing fixture is provided with a second insertion hole corresponding to the position of the first insertion hole. The second insertion hole is used for the pin to pass through and to cooperate with the pin, and the first insertion hole is used for the pin to be inserted and to cooperate with the pin.

[0009] Optionally, the first through hole is rectangular, and the limiting groove includes two first limiting grooves and two second limiting grooves. The two first limiting grooves are symmetrically arranged on both sides of the first through hole, and the two second limiting grooves are symmetrically arranged on the other two sides of the first through hole.

[0010] Optionally, there are two lifting components, which are symmetrically arranged on opposite sides of the support frame, and the support frame is connected to the output ends of both lifting components.

[0011] Optionally, the lifting assembly includes a motor, a lead screw connected to the motor drive, and a first slider threadedly engaged with the lead screw. The axis of the lead screw is perpendicular to the upper surface of the support platform, and the support frame is fixedly connected to the first slider.

[0012] Optionally, the lifting assembly also includes two slide rails and a second slider that cooperates with the two slide rails respectively. The extension direction of the slide rails is perpendicular to the upper surface of the support platform. The two slide rails are symmetrically arranged on both sides of the lead screw. The support frame is also fixedly connected to the second slider.

[0013] Optionally, the measuring mechanism also includes a housing surrounding the three sets of measuring components, with one end of the housing abutting against the support platform and the opposite end higher than the location of the sensor.

[0014] Optionally, the support platform includes a bottom support, an elastic layer disposed on the bottom support, and a top support disposed on the elastic layer, with the lifting support mechanism and the measuring mechanism both disposed on the top support.

[0015] The beneficial effects of this application include: This application provides a weighing-type automatic center of mass measurement device, comprising: a support platform, a lifting support mechanism disposed on the support platform, and a measuring mechanism. The lifting support mechanism includes a lifting component and a carrier frame connected to the output end of the lifting component. The lifting component drives the carrier frame to reciprocate along a preset direction. The carrier frame is used to carry the product to be measured. The measuring mechanism includes three sets of measuring components arranged in a triangle. Each measuring component includes a load-bearing platform and a sensor disposed on the load-bearing platform. The upper surface of the load-bearing platform is used to carry the product to be measured. The sensor is used to detect the mass of the product to be measured. The preset direction is perpendicular to the upper surface of the load-bearing platform. The carrier frame is provided with a first through hole for the three load-bearing platforms to pass through. This weighing-type automatic center of mass measurement device can simultaneously measure the mass, center of mass offset direction, and offset amount of the product to be measured, and has better versatility. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is one of the structural schematic diagrams of the weighing-type automatic centroid measuring device provided in the embodiments of this application; Figure 2 A second schematic diagram of the structure of the weighing-type automatic centroid measuring device provided in the embodiments of this application; Figure 3 This is the third schematic diagram of the structure of the weighing-type automatic centroid measuring device provided in the embodiments of this application; Figure 4 A schematic diagram of the detection process of the weighing-type automatic centroid measuring device provided in an embodiment of this application; Figure 5 A schematic diagram of the measuring mechanism of the weighing-type automatic centroid measuring device provided in an embodiment of this application; Figure 6 A schematic diagram of the support frame and weighing fixture of the weighing center of mass automatic measuring device provided in the embodiments of this application; Figure 7 A schematic diagram of the lifting assembly of the weighing center of mass automatic measuring device provided in the embodiments of this application.

[0018] Icons: 10-Weighing type automatic center of mass measuring device; 11-Support platform; 111-Bottom bracket; 112-Elastic layer; 113-Top bracket; 12-Lifting assembly; 121-Motor; 122-Lead screw; 123-First slider; 124-Slide rail; 125-Second slider; 13-Bearing frame; 131-First through hole; 132-Limit pin; 133-First limit groove; 134-Second limit groove; 14-Measuring assembly; 141-Bearing platform; 1411-Bearing part; 1412-Mounting part; 142-Sensor; 15-Mounting platform; 151-Mounting hole; 16-Weighing fixture; 161-Second through hole; 162-Limit hole; 17-Outer shell; 20-Product to be measured; 21-Geometric center line; Z-Preset direction. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] Please refer to Figure 1 and Figure 2 This application provides a weighing-type automatic center of mass measuring device 10, including: a support platform 11, a lifting support mechanism and a measuring mechanism disposed on the support platform 11. The lifting support mechanism supports the product to be measured 20 and drives the product to be measured 20 closer to or further away from the measuring mechanism by lifting, thereby realizing automatic loading or unloading of the product to be measured 20. Different measuring heights can be set according to different products to be measured 20. The measuring mechanism is used to measure the mass, center of mass offset direction, and offset amount of the product to be measured 20 after loading.

[0025] Specifically, the lifting support mechanism includes a lifting assembly 12 and a support frame 13 connected to the output end of the lifting assembly 12. The lifting assembly 12 drives the support frame 13 to reciprocate along a preset direction Z, and the support frame 13 supports the product 20 to be tested. Please refer to the reference. Figure 3 The measuring mechanism includes three sets of measuring components 14 arranged in a triangle. Each measuring component 14 includes a support platform 141 and a sensor 142 mounted on the support platform 141. The upper surface of the support platform 141 is used to support the product to be tested 20. The sensor 142 is used to detect the mass of the product to be tested 20. The preset direction Z is perpendicular to the upper surface of the support platform 141. The support frame 13 is provided with a first through hole 131 for the three support platforms 141 to pass through.

[0026] It should be noted that the output end of the lifting component 12 reciprocates along a preset direction Z, thereby driving the support frame 13 connected to it to also reciprocate along the preset direction Z. The product under test 20 is placed on the support frame 13 to follow the movement of the support frame 13.

[0027] The product under test 20 can be placed directly on the support frame 13 or indirectly on the support frame 13, that is, the product under test 20 is placed on the fixture, and the fixture is then placed directly on the support frame 13. The product under test 20 should be able to separate from the support frame 13 when loaded, and be supported only by the measuring mechanism, so as to avoid the supporting effect of the support frame 13 affecting the measurement results.

[0028] The measuring mechanism has three support platforms 141 to support the product under test 20 when it is separated from the support frame 13. Each support platform 141 is equipped with a sensor 142, which can measure the mass of the product under test 20. When the product under test 20 is placed on the support platform 141, the sensors 142 on the three support platforms 141 will display the mass information respectively. The mass measured by the three sensors 142 is added together to obtain the mass of the product under test 20. At the same time, based on the mass information measured by the three sensors 142 and the position information of the three sensors 142, the direction and amount of the center of gravity offset of the product under test 20 can also be calculated.

[0029] Please refer to the reference. Figure 4 After the product under test 20 is placed in the measuring mechanism, one of the sensors 142 should be located on the geometric center line 21 of the product under test 20, and the other two sensors 142 should be symmetrically distributed on both sides of the geometric center line 21 of the product under test 20, and the theoretical centroid of the product under test 20 should be located between the three sensors 142. Figure 4 In the diagram, 1, 2, and 3 are three measurement points; o is the theoretical center of mass position of the product 20 under test, with coordinates (0, 0); M1, M2, and M3 are the mass measurements of the three measurement points, respectively; Δx and Δy are the actual offsets of the center of mass in the X and Y directions, with coordinates (Δx, Δy); a is the distance between measurement points 1 and 2 in the X direction and the theoretical center of mass position; b is the distance between measurement point 3 in the X direction and the theoretical center of mass position; and c is the distance between measurement points 1 and 2 in the Y direction and the theoretical center of mass position. Based on the torque balance formula, the following three formulas can be obtained: Formula 1: Mass of product 20 to be tested: F = M1 + M2 + M3; Formula 2: F·(a+Δx)-M3·(a+b)=0; Formula 3: M1·(c-Δx)-M2·(c+Δy)=0; From Formula 1 to Formula 3, we can obtain: Formula 4: Δx = [-a(M1+M2)+b·M3] / (M1+M2+M3); Formula 5: Δy=(M1-M2) / (M1+M2)·c.

[0030] The variables required to calculate Δx and Δy can be directly measured on the weighing-type automatic centroid measuring device 10. Therefore, the weighing-type automatic centroid measuring device 10 can simultaneously measure the mass and centroid position of the product 20 under test.

[0031] Furthermore, the aforementioned automatic weighing center of mass measuring device 10 uses a support frame 13 to support the product 20 to be measured, and a first through hole 131 is opened on the support frame 13. During the descent of the support frame 13 driven by the lifting component 12, the load-bearing platform 141 can pass through the first through hole 131 to lift the product 20 to be measured, and the sensor 142 on the load-bearing platform 141 measures the product 20. This measurement method enables the aforementioned automatic weighing center of mass measuring device 10 to detect products of different masses and sizes, thus improving its versatility.

[0032] Alternatively, please refer to Figure 2 and Figure 5 The load-bearing platform 141 includes a load-bearing part 1411 and a mounting part 1412. The mounting part 1412 is fixed on the support platform 11, and the sensor 142 is fixed on the mounting part 1412. The load-bearing part 1411 is set on the sensor 142, and the upper surface of the load-bearing part 1411 is used to support the product 20 to be tested.

[0033] Furthermore, the measuring mechanism also includes a mounting platform 15 set on the support platform 11. The mounting part 1412 is fixed on the mounting platform 15. The mounting platform 15 is provided with multiple sets of mounting holes 151. The mounting part 1412 can be fixed in different mounting holes 151 to adjust the position of the measuring point, thereby making the position adjustment range of the measuring point wider.

[0034] Optionally, please refer to the following: Figure 3 The weighing-type automatic center of mass measuring device 10 also includes a weighing fixture 16, which is used to place the product to be measured 20. That is, the product to be measured 20 is placed on the support frame 13 through the weighing fixture 16. The upper surface of the support frame 13 is provided with a limiting groove communicating with the first through hole 131. The limiting groove is used to accommodate the weighing fixture 16 and limit the weighing fixture 16. The weighing fixture 16 is provided with a second through hole 161 corresponding to the first through hole 131. When the product to be measured 20 is placed on the weighing fixture 16, the product to be measured 20 covers the second through hole 161.

[0035] The bottom of the limiting groove supports the weighing fixture 16, and the side of the limiting groove is adapted to the side of the weighing fixture 16, thereby achieving support and limiting of the weighing fixture 16. The first through hole 131 on the support frame 13 and the second through hole 161 on the weighing fixture 16 are both used for the passage of the three support platforms 141. During the process of the lifting assembly 12 driving the support frame 13 to descend, the weighing fixture 16 and the product to be measured 20 also descend. After descending to a certain height, the three support platforms 141 pass through the first through hole 131 and the second through hole 161 to contact the product to be measured 20 and lift the product to be measured for measurement.

[0036] The weighing fixtures 16 can be two or more, with different sizes to accommodate products 20 of different sizes. The support frame 13 is equipped with limiting structures adapted to each weighing fixture 16. In practical applications, a suitable weighing fixture 16 can be selected based on the actual size of the product 20, and then fixed to the corresponding position on the support frame 13. This configuration improves the versatility of the weighing-type automatic center of mass measuring device 10.

[0037] Alternatively, please refer to Figure 3 and Figure 6 The bottom of the limiting groove and the weighing fixture 16 are provided with a limiting pin 132 on one side and a limiting hole 162 corresponding to the position of the limiting pin 132 on the other side. The limiting hole 162 is used for the insertion of the limiting pin 132 and for it to cooperate with the limiting pin 132, thereby fixing the weighing fixture 16 on the support frame 13 and preventing the weighing fixture 16 from shifting. At the same time, the setting of the limiting pin 132 and the limiting hole 162 also facilitates the rapid positioning of the weighing fixture 16 on the support frame 13.

[0038] And / or, the bottom of the limiting groove is provided with a first insertion hole, and the weighing fixture 16 is provided with a second insertion hole corresponding to the position of the first insertion hole. The second insertion hole is used for the pin to pass through and engage with the pin, and the first insertion hole is used for the pin to be inserted and engage with the pin. After the weighing fixture 16 is placed on the support frame 13, the pin is inserted into the second through hole 161 and the first through hole 131 to fix the weighing fixture 16 on the support frame 13 and prevent the weighing fixture 16 from shifting. At the same time, the setting of the first insertion hole and the second insertion hole also facilitates the rapid positioning of the weighing fixture 16 on the support frame 13.

[0039] Optionally, the first through hole 131 is rectangular, and the limiting groove includes two first limiting grooves 133 and two second limiting grooves 134. The two first limiting grooves 133 are symmetrically arranged on both sides of the first through hole 131, and the two second limiting grooves 134 are symmetrically arranged on the other two sides of the first through hole 131.

[0040] It is understandable that since the distance between different opposite sides of the first through hole 131 of the rectangle is different, a weighing fixture 16 of appropriate size can be selected according to the size of the product 20 to be measured, and the weighing fixture 16 can be placed in the first limiting groove 133 and / or the second limiting groove 134 according to the size of the weighing fixture 16, thereby improving the flexibility and versatility of the weighing-type automatic centroid measuring device 10.

[0041] Alternatively, please refer to Figure 1 and Figure 2 There are two lifting components 12, which are symmetrically arranged on opposite sides of the support frame 13. The support frame 13 is connected to the output ends of both lifting components 12.

[0042] The two lifting components 12 simultaneously drive the support frame 13 to lift, which can improve the stability of the movement of the support frame 13 and expand the range of weighable product quality and size.

[0043] Optionally, please refer to the following: Figure 7 The lifting assembly 12 includes a motor 121, a lead screw 122 driven by the motor 121, and a first slider 123 threadedly engaged with the lead screw 122. The axis of the lead screw 122 is perpendicular to the upper surface of the support platform 141, and the support frame 13 is fixedly connected to the first slider 123.

[0044] Motor 121 drives lead screw 122 to rotate forward or reverse, thereby raising or lowering the first slider 123 on lead screw 122, which in turn causes the support frame 13, which is fixedly connected to the first slider 123, to move up and down. Using motor 121 to control the raising and lowering of the support frame 13 provides higher positional accuracy. When there are two lifting components 12, the two motors 121 drive synchronously on both sides of the support frame 13, ensuring consistent height loading. For example, motor 121 and lead screw 122 are coaxially connected via a reducer to increase torque.

[0045] Optionally, the lifting assembly 12 also includes two slide rails 124 and a second slider 125 that cooperates with the two slide rails 124 respectively. The extension direction of the slide rails 124 is perpendicular to the upper surface of the support platform 141. The two slide rails 124 are symmetrically arranged on both sides of the lead screw 122. The support frame 13 is also fixedly connected to the second slider 125.

[0046] The first slider 123 and the second slider 125 are simultaneously connected to the support frame 13. The first slider 123 is used to drive the support frame 13 to rise and fall. The second slider 125 guides the rising and falling motion of the support frame 13 by cooperating with the slide rail 124, which can further improve the stability and accuracy of the movement of the support frame 13.

[0047] Alternatively, please refer to Figure 1 and Figure 2 The measuring mechanism also includes a housing 17, which surrounds three sets of measuring components 14. One end of the housing 17 abuts against the support platform 11, and the other end is higher than the location of the sensor 142.

[0048] A housing 17 is provided on the outside of the measuring component 14 for physical protection. This not only protects the sensor 142 but also reduces the influence of ambient airflow on the measurement results, making the measurement results more accurate.

[0049] Optionally, the support platform 11 includes a bottom support 111, an elastic layer 112 disposed on the bottom support 111, and a top support 113 disposed on the elastic layer 112. The lifting support mechanism and the measuring mechanism are both disposed on the top support 113. The intermediate elastic layer 112 can reduce external interference and shorten the system stabilization time.

[0050] Furthermore, the bottom support 111 is a rigid welded frame, forming a high-precision support platform 11, providing a high-precision and high-stability foundation for measurement.

[0051] The top support 113 is a marble or cast iron platform with good load-bearing capacity, which plays a role in vibration isolation and improving stability.

[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A weighing-type automatic centroid measuring device, characterized in that, include: The system includes a support platform, a lifting support mechanism mounted on the support platform, and a measuring mechanism. The lifting support mechanism includes a lifting component and a support frame connected to the output end of the lifting component. The lifting component drives the support frame to reciprocate along a preset direction. The support frame carries the product to be tested. The measuring mechanism includes three sets of measuring components arranged in a triangle. Each measuring component includes a load-bearing platform and a sensor mounted on the load-bearing platform. The upper surface of the load-bearing platform carries the product to be tested. The sensor detects the mass of the product to be tested. The preset direction is perpendicular to the upper surface of the load-bearing platform. The support frame has a first through hole for the three load-bearing platforms to pass through.

2. The automatic weighing centroid measuring device as described in claim 1, characterized in that, The load-bearing platform includes a load-bearing part and a mounting part. The mounting part is fixed on the support platform, the sensor is fixed on the mounting part, the load-bearing part is disposed on the sensor, and the upper surface of the load-bearing part is used to support the product to be tested.

3. The automatic weighing center of mass measuring device as described in claim 1, characterized in that, It also includes a weighing fixture for placing the product to be tested. The upper surface of the support frame is provided with a limiting groove communicating with the first through hole. The limiting groove is used to accommodate the weighing fixture and limit its position. The weighing fixture is provided with a second through hole corresponding to the first through hole. When the product to be tested is placed on the weighing fixture, the product to be tested covers the second through hole.

4. The automatic weighing centroid measuring device as described in claim 3, characterized in that, The bottom of the limiting groove and one of the weighing fixtures are provided with a limiting pin, and the other is provided with a limiting hole corresponding to the position of the limiting pin. The limiting hole is used for the limiting pin to be inserted and to cooperate with the limiting pin. And / or, the bottom of the limiting groove is provided with a first insertion hole, and the weighing fixture is provided with a second insertion hole corresponding to the position of the first insertion hole. The second insertion hole is used for the pin to pass through and to cooperate with the pin, and the first insertion hole is used for the pin to be inserted and to cooperate with the pin.

5. The automatic weighing center of mass measuring device as described in claim 3, characterized in that, The first through hole is rectangular, and the limiting groove includes two first limiting grooves and two second limiting grooves. The two first limiting grooves are symmetrically arranged on both sides of the first through hole, and the two second limiting grooves are symmetrically arranged on the other two sides of the first through hole.

6. The automatic weighing centroid measuring device as described in claim 1, characterized in that, The number of lifting components is two, and the two lifting components are symmetrically arranged on opposite sides of the support frame. The support frame is connected to the output ends of both lifting components.

7. The automatic weighing centroid measuring device as described in claim 1, characterized in that, The lifting assembly includes a motor, a lead screw connected to the motor, and a first slider threadedly engaged with the lead screw. The axis of the lead screw is perpendicular to the upper surface of the support platform, and the support frame is fixedly connected to the first slider.

8. The automatic weighing centroid measuring device as described in claim 7, characterized in that, The lifting assembly also includes two slide rails and a second slider that cooperates with the two slide rails respectively. The extension direction of the slide rails is perpendicular to the upper surface of the support platform. The two slide rails are symmetrically arranged on both sides of the lead screw. The support frame is also fixedly connected to the second slider.

9. The automatic weighing centroid measuring device as described in claim 1, characterized in that, The measuring mechanism also includes a housing that surrounds the three sets of measuring components. One end of the housing abuts against the support platform, and the other end is higher than the location of the sensor.

10. The automatic weighing centroid measuring device as described in claim 1, characterized in that, The support platform includes a bottom bracket, an elastic layer disposed on the bottom bracket, and a top bracket disposed on the elastic layer. The lifting support mechanism and the measuring mechanism are both disposed on the top bracket.

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