A center of gravity level measuring frame

Abstract

This invention relates to the field of center of gravity measurement technology, and more particularly to a center of gravity level measuring frame, comprising a main plate, wherein the upper end of the main plate is provided with a clamping and measuring mechanism for clamping and measuring the center of gravity of an object, the clamping and measuring mechanism including four symmetrically opened first placement slots on the upper end of the main plate, and protective rings fixedly connected to the four first placement slots respectively. Second placement slots are respectively opened at positions within the first placement slots on the upper end of the main plate. A flipping mechanism for flipping and measuring the weight of the object is provided inside the main plate. A balancing mechanism for keeping the main plate horizontal is provided below the main plate. A third pressure sensor at the telescopic end of a third electric telescopic rod can accurately measure the weight of the object, ensuring that the real-time weight of the material can be accurately measured before measurement, thus improving the accuracy of subsequent center of gravity measurement.

Description

Technical Field

[0001] This invention relates to the field of center of gravity measurement technology, and more particularly to a center of gravity level measuring frame. Background Technology

[0002] During the development of small aircraft shells, the weight and center of gravity of the aircraft need to be measured according to the requirements of different engineering stages to improve the stability of the small aircraft. Center of gravity level measuring instruments include suspension-based and weighing-based instruments. The weighing-based instrument can accurately measure objects of various shapes and weights and has a wide range of applications. Its working principle is based on the lever principle. The object is placed on at least three support points equipped with weighing sensors, and the pressure on each support point is measured by the sensors. According to the lever balance condition, i.e., effort × effort arm = resistance × resistance arm, combined with the pressure values ​​of each support point and their positional relationships, the horizontal position of the object's center of gravity can be determined through a series of calculations.

[0003] Existing weighing-based center of gravity level measuring instruments require workers to first weigh the object to be measured and then place it on a support plate. During this process, the object may rub against the clamping rod, causing changes in the measured weight and reducing measurement accuracy. Furthermore, the center of gravity needs to be measured multiple times, requiring the object to be rotated during repeated measurements. Current technology involves manually rotating the object using a handheld clamp, which is inefficient and prone to causing friction against the object's surface, resulting in changes in the measured weight. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a center of gravity level measuring frame.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a center of gravity level measuring frame, comprising a main body plate, wherein a clamping and measuring mechanism for clamping and measuring the center of gravity of an object is provided at the upper end of the main body plate, the clamping and measuring mechanism comprising four symmetrically opened first placement slots on the upper end of the main body plate, wherein a protective ring is fixedly connected to each of the four first placement slots on the main body plate, wherein a second placement slot is opened at the position of the first placement slot on the upper end of the main body plate, wherein a spring is fixedly connected to each of the two second placement slots on the main body plate, wherein a second pressure sensor is fixedly connected to the upper end of each of the four springs, wherein a flipping mechanism for flipping and measuring the weight of an object is provided inside the main body plate, and a balancing mechanism for keeping the main body plate level is provided below the main body plate.

[0006] Preferably, the upper ends of the four second pressure sensors are respectively fixedly connected to second electric telescopic rods, the fixed end side of the second electric telescopic rods slides in cooperation with the inner side of the protective ring, the telescopic ends of the four second electric telescopic rods are respectively fixedly connected to limit plates, the side of the limit plates slides in cooperation with the inner side of the protective ring, and the upper ends of the four limit plates are respectively fixedly connected to connecting bodies.

[0007] Preferably, the upper ends of the four connecting bodies are respectively fixedly connected to a first electric telescopic rod, the four first electric telescopic rods are arranged in a horizontal direction, and the telescopic direction of the four first electric telescopic rods points towards the center.

[0008] Preferably, each of the four first electric telescopic rods has a support body fixedly connected to its telescopic end, and an S-shaped sensor is fixedly connected to the upper end of each of the four support bodies. An arc-shaped groove is opened at the upper end of each of the four S-shaped sensors.

[0009] Preferably, the flipping mechanism includes a second slot that extends through the end face of the main body plate. A fixed body is rotatably connected to the main body plate in the second slot. The fixed body is a ring structure. A third electric telescopic rod is fixedly connected to the inner side of the fixed body. The third electric telescopic rod is arranged in a vertical direction. The telescopic end of the third electric telescopic rod is fixedly connected to a connecting rod through a third pressure sensor.

[0010] Preferably, a first support plate is fixedly connected to the upper end of the connecting rod, and a second support plate is symmetrically connected above the first support plate. A fourth electric telescopic rod is fixedly connected to the upper end of each of the two second support plates. A third support plate is fixedly connected to the telescopic ends of each of the two fourth electric telescopic rods. A third placement groove is opened through the side of each of the two third support plates. A first motor is fixedly connected to the outer side of each of the two third support plates at a position close to the third placement groove. A fifth electric telescopic rod is fixedly connected to the drive shaft end of each of the two first motors in the third placement groove. A top body is fixedly connected to the telescopic ends of each of the two fifth electric telescopic rods.

[0011] Preferably, the main body plate has a limiting groove inside that communicates with the second empty groove, and a limiting ring is rotatably connected inside the limiting groove. The inner side of the limiting ring is fixedly connected to the outer side of the fixing body.

[0012] Preferably, the upper end of the main body plate is provided with a fourth placement groove, and a second motor is fixedly connected to the main body plate in the fourth placement groove. A gear is fixedly connected to the transmission shaft end of the second motor, and a gear ring that meshes with the gear is fixedly connected to the side of the fixing body.

[0013] Preferably, the balancing mechanism includes four symmetrically arranged fifth placement slots at the lower end of the main body plate. The main body plate is fixedly connected to a sixth electric telescopic rod in each of the fifth placement slots. The lower end of each of the four sixth electric telescopic rods is provided with a fixing shell, and the lower end of each of the four fixing shells is fixedly connected with a support base.

[0014] Preferably, the upper ends of the four fixed shells are respectively provided with receiving grooves, the four sixth electric telescopic rods are respectively rotatably connected to hinge bodies in the receiving grooves, the four fixed shells are respectively fixedly connected to fixed rods in the receiving grooves, the hinge bodies are rotatably connected to the fixed rods, and the upper end of the main plate is fixedly connected to a level measuring instrument.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The second motor drives the gear to rotate, which in turn drives the gear ring to rotate, which in turn drives the fixed body to rotate. Simultaneously, the first motor drives the housing to rotate, and together they drive the housing to rotate until the housing rotates to the angle where the center of gravity needs to be measured. Then, the third electric telescopic rod extends, moving the housing above the S-shaped sensor. After that, the four first electric telescopic rods extend and retract synchronously, moving the S-shaped sensors below the housing respectively. At this time, the third electric telescopic rod is retracted, and the four S-shaped sensors support the housing. When the planes of two relative S-shaped sensors do not coincide with the center of gravity of the housing, the values ​​of the four S-shaped sensors are different. The third electric telescopic rod is then extended again, and the first electric telescopic rods are extended and retracted according to the values ​​of the S-shaped sensors. Then the third electric telescopic rod is retracted again, and this step is repeated until the four S-shaped sensors are vertically aligned. At this time, the center of gravity of the housing is located at the intersection of the vertical planes of the two sets of relative S-shaped sensors. The center of gravity of the housing can be measured quickly and accurately, improving the measurement accuracy. Then, the first and second motors drive the housing to rotate, and the steps are repeated. The center of gravity of the housing under different rotations can be measured. The center of gravity of the housing can be obtained from the coincidence point of the center of gravity lines at different rotation angles. During the rotation process, the surface of the housing can be prevented from being scratched due to manual rotation, thus improving the accuracy of the measurement process and increasing the efficiency of the measurement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the entire invention. Figure 1 ; Figure 3 This is a cross-sectional view of the entire invention. Figure 2 ; Figure 4 This is a cross-sectional view of the entire invention. Figure 3 ; Figure 5 This is a cross-sectional view of the entire invention. Figure 4 ; Figure 6 For the present invention Figure 2 Enlarged view of point A; Figure 7 For the present invention Figure 3 Enlarged view of point B; Figure 8 For the present invention Figure 4 Enlarged view of point C; Figure 9 For the present invention Figure 5 Enlarged view of point D.

[0017] 1. Main body plate; 2. Clamping and measuring mechanism; 3. Tilting mechanism; 4. Balancing mechanism; 21. First placement slot; 22. Protective ring; 23. Second placement slot; 24. Spring; 25. Connecting body; 26. First electric telescopic rod; 27. Support body; 28. S-shaped sensor; 29. ​​Arc-shaped groove; 210. Second pressure sensor; 211. Second electric telescopic rod; 212. Limiting plate; 31. Limiting groove; 32. Limiting ring; 33. Fixing body; 34. Second empty slot; 35. Third electric telescopic rod; 36. Connecting... 37. Connecting rod; 38. First support plate; 39. Second support plate; 30. Fourth electric telescopic rod; 310. Third support plate; 311. First motor; 312. Third placement slot; 314. Fifth electric telescopic rod; 315. Top body; 316. Gear ring; 317. Gear; 318. Fourth placement slot; 319. Second motor; 41. Level measuring instrument; 42. Fifth placement slot; 43. Sixth electric telescopic rod; 44. Support base; 45. Hinge body; 46. Fixed rod; 47. Receiving slot; 48. Fixed shell. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] Please see Figures 1-9 A center of gravity level measuring frame includes a main plate 1, and a clamping and measuring mechanism 2 for clamping and measuring the center of gravity of an object is provided at the upper end of the main plate 1.

[0020] In this embodiment, the clamping and measuring mechanism 2 includes four symmetrically arranged first placement slots 21 on the upper end of the main body plate 1. The main body plate 1 is fixedly connected with protective rings 22 in the four first placement slots 21 respectively. The upper end of the main body plate 1 is provided with second placement slots 23 at the positions located in the first placement slots 21. The main body plate 1 is fixedly connected with springs 24 in the second placement slots 23 respectively. The upper ends of the four springs 24 are fixedly connected with second pressure sensors 210 respectively.

[0021] Each of the four second pressure sensors 210 has a second electric telescopic rod 211 fixedly connected to its upper end. The fixed end of the second electric telescopic rod 211 slides in cooperation with the inner side of the protective ring 22. The telescopic ends of the four second electric telescopic rods 211 are fixedly connected to limit plates 212. The side of the limit plates 212 slides in cooperation with the inner side of the protective ring 22. The upper ends of the four limit plates 212 are fixedly connected to connecting bodies 25.

[0022] The upper ends of the four connecting bodies 25 are respectively fixedly connected to a first electric telescopic rod 26. The four first electric telescopic rods 26 are arranged in a horizontal direction, and the telescopic direction of the four first electric telescopic rods 26 points to the center.

[0023] Each of the four first electric telescopic rods 26 has a support body 27 fixedly connected to its telescopic end. Each of the four support bodies 27 has an S-shaped sensor 28 fixedly connected to its upper end. Each of the four S-shaped sensors 28 has an arc-shaped groove 29 opened at its upper end.

[0024] Specifically, the third electric telescopic rod 35 extends, moving the housing above the S-shaped sensor 28. Then, the four first electric telescopic rods 26 extend and retract synchronously, moving the S-shaped sensors 28 below the housing respectively. At this time, the third electric telescopic rod 35 retracts, and the four S-shaped sensors 28 support the housing.

[0025] In this embodiment, the main body plate 1 is provided with a flipping mechanism 3 for flipping and measuring the weight of the object.

[0026] The flipping mechanism 3 includes a second slot 34 that runs through the end face of the main body plate 1. A fixed body 33 is rotatably connected to the main body plate 1 in the second slot 34. The fixed body 33 is a ring structure. A third electric telescopic rod 35 is fixedly connected to the inner side of the fixed body 33. The third electric telescopic rod 35 is arranged in a vertical direction. The telescopic end of the third electric telescopic rod 35 is fixedly connected to a connecting rod 36 through a third pressure sensor.

[0027] The upper end of the connecting rod 36 is fixedly connected to a first support plate 37. A second support plate 38 is symmetrically connected above the first support plate 37. A fourth electric telescopic rod 39 is fixedly connected to the upper end of each of the two second support plates 38. A third support plate 310 is fixedly connected to the telescopic ends of each of the two fourth electric telescopic rods 39. A third placement groove 312 is opened through the side of each of the two third support plates 310. A first motor 311 is fixedly connected to the outer side of each of the two third support plates 310 at a position close to the third placement groove 312. A fifth electric telescopic rod 314 is fixedly connected to the drive shaft end of each of the two first motors 311 in the third placement groove 312. A top body 315 is fixedly connected to the telescopic ends of each of the two fifth electric telescopic rods 314.

[0028] The main body plate 1 has a limiting groove 31 that communicates with the second empty groove 34. A limiting ring 32 is rotatably connected in the limiting groove 31. The inner side of the limiting ring 32 is fixedly connected to the outer side of the fixing body 33.

[0029] The upper end of the main body plate 1 is provided with a fourth placement groove 318. A second motor 319 is fixedly connected to the main body plate 1 in the fourth placement groove 318. A gear 317 is fixedly connected to the transmission shaft end of the second motor 319. A toothed ring 316 that meshes with the gear 317 is fixedly connected to the side of the fixing body 33.

[0030] Specifically, the two fifth electric telescopic rods 314 are extended, and the two fifth electric telescopic rods 314 respectively press and fix the side of the object through the top body 315. At the same time, the third pressure sensor at the telescopic end of the third electric telescopic rod 35 can accurately measure the weight of the object, ensuring that the real-time weight of the material can be accurately measured before measurement, thereby improving the accuracy of subsequent center of gravity measurement.

[0031] In this embodiment, a balancing mechanism 4 is provided below the main body plate 1 to keep the main body plate 1 horizontal.

[0032] The balancing mechanism 4 includes four symmetrically arranged fifth placement slots 42 at the lower end of the main body plate 1. The main body plate 1 is fixedly connected to a sixth electric telescopic rod 43 in each of the fifth placement slots 42. The lower ends of the four sixth electric telescopic rods 43 are respectively provided with a fixing shell 48, and the lower ends of the four fixing shells 48 are respectively fixedly connected with a support base 44.

[0033] Each of the four fixed shells 48 has a receiving groove 47 at its upper end. Each of the four sixth electric telescopic rods 43 is rotatably connected to a hinge body 45 in the receiving groove 47. Each of the four fixed shells 48 is fixedly connected to a fixing rod 46 in the receiving groove 47. The hinge body 45 is rotatably connected to the fixing rod 46. A level measuring instrument 41 is fixedly connected to the upper end of the main body plate 1.

[0034] Specifically, the device is placed on the ground by four support bases 44, and the level measuring instrument 41 is electrically connected to the four sixth electric telescopic rods 43 through the controller. The level measuring instrument 41 controls the extension and retraction of the four sixth electric telescopic rods 43 so that the main body plate 1 is kept horizontal.

[0035] In use, the device is placed on the ground via four balancing mechanisms 4. Then, the level measuring instrument 41 is activated. The level measuring instrument 41, through a controller, extends and retracts the sixth electric telescopic rod 43 until it displays that the main body plate 1 is horizontal. This ensures the main body plate 1 remains horizontal during use, improving measurement accuracy. Next, the aircraft shell whose center of gravity needs to be measured is placed above the first support plate 37. Simultaneously, the two fifth electric telescopic rods 314 extend, causing the top body 315 to press against the side of the shell. Then, the first motor 311 and the second motor 319 are activated. The second motor 319 drives the gear 317 to rotate, which in turn drives the gear ring 316 to rotate. The gear ring 316 drives the fixed body 33 to rotate, while the first motor 311 drives the shell to rotate, thus rotating the shell until it reaches the position required for measurement. After measuring the angle of the center of gravity, the third electric telescopic rod 35 extends, moving the housing above the S-shaped sensor 28. Then, the four first electric telescopic rods 26 extend and retract synchronously, moving the S-shaped sensors 28 below the housing. At this point, the third electric telescopic rod 35 is retracted, and the four S-shaped sensors 28 support the housing. When the planes of two relative S-shaped sensors 28 do not coincide with the center of gravity of the housing, and the values ​​of the four S-shaped sensors 28 are different, the third electric telescopic rod 35 is extended again, and the first electric telescopic rods 26 are extended and retracted according to the values ​​of the S-shaped sensors 28. Then, the third electric telescopic rod 35 is retracted again, and this step is repeated until the four S-shaped sensors 28 are vertically aligned. At this point, the center of gravity of the housing is located at the intersection of the vertical planes of the two sets of relative S-shaped sensors 28, which allows for quick and accurate measurement of the housing's center of gravity, improving measurement accuracy.

[0036] Then, the first motor 311 and the second motor 319 drive the housing to rotate. The steps are repeated to measure the center of gravity of the housing under different rotation angles. The center of gravity of the housing can be determined by the coincidence point of the center of gravity lines at different rotation angles. During the rotation, the second motor 319 drives the gear 317 to rotate, the gear 317 drives the gear ring 316 to rotate, and the gear ring 316 drives the fixed body 33 to rotate. At the same time, the first motor 311 drives the housing to rotate, and together they drive the housing to rotate until the housing rotates to the angle where the center of gravity needs to be measured. This can prevent the housing surface from being scratched due to manual rotation, improve the accuracy of the measurement process, and improve the efficiency of the measurement.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A center of gravity level measuring frame, comprising a main body plate (1), characterized in that: The upper end of the main plate (1) is provided with a clamping and measuring mechanism (2) for clamping and measuring the center of gravity of an object. The clamping and measuring mechanism (2) includes four first placement slots (21) symmetrically opened on the upper end of the main plate (1). The main plate (1) is fixedly connected with protective rings (22) in the four first placement slots (21). The upper end of the main plate (1) is provided with second placement slots (23) at the positions located in the first placement slots (21). The main plate (1) is fixedly connected with springs (24) in the second placement slots (23). The upper ends of the four springs (24) are fixedly connected with second pressure sensors (210). The main plate (1) is provided with a flipping mechanism (3) for flipping and measuring the weight of an object. The lower part of the main plate (1) is provided with a balancing mechanism (4) to keep the main plate (1) horizontal. Each of the four second pressure sensors (210) has a second electric telescopic rod (211) fixedly connected to its upper end. The fixed end of the second electric telescopic rod (211) slides against the inner side of the protective ring (22). The telescopic ends of the four second electric telescopic rods (211) are fixedly connected to limit plates (212). The side of the limit plates (212) slides against the inner side of the protective ring (22). Each of the four limit plates (212) has a connecting body (25) fixedly connected to its upper end. Each of the four connecting bodies (25) has a first electric telescopic rod (26) fixedly connected to its upper end. The four first electric telescopic rods (26) are arranged horizontally, and their telescopic direction points towards the center. The telescopic ends of an electric telescopic rod (26) are respectively fixedly connected to a support body (27). The upper ends of the four support bodies (27) are respectively fixedly connected to an S-shaped sensor (28). The upper ends of the four S-shaped sensors (28) are respectively provided with arc-shaped grooves (29). The flipping mechanism (3) includes a second slot (34) that passes through the end face of the main body plate (1). The main body plate (1) is rotatably connected to a fixing body (33) in the second slot (34). The fixing body (33) is a ring structure. The inner side of the fixing body (33) is fixedly connected to a third electric telescopic rod (35). The third electric telescopic rod (35) is set in the vertical direction. The telescopic end of the third electric telescopic rod (35) is fixedly connected to a connecting rod (36) through a third pressure sensor.

2. The center of gravity level measuring frame according to claim 1, characterized in that: The upper end of the connecting rod (36) is fixedly connected to a first support plate (37), and a second support plate (38) is symmetrically connected above the first support plate (37). The upper ends of the two second support plates (38) are respectively fixedly connected to a fourth electric telescopic rod (39). The telescopic ends of the two fourth electric telescopic rods (39) are respectively fixedly connected to a third support plate (310). The sides of the two third support plates (310) are respectively provided with a third placement groove (312). The outer sides of the two third support plates (310) are respectively fixedly connected to a first motor (311) at a position close to the third placement groove (312). The drive shaft ends of the two first motors (311) are respectively fixedly connected to a fifth electric telescopic rod (314) in the third placement groove (312). The telescopic ends of the two fifth electric telescopic rods (314) are respectively fixedly connected to a top body (315).

3. The center of gravity level measuring frame according to claim 2, characterized in that: The main plate (1) has a limiting groove (31) that communicates with the second empty groove (34) inside. A limiting ring (32) is rotatably connected inside the limiting groove (31). The inner side of the limiting ring (32) is fixedly connected to the outer side of the fixing body (33).

4. A center of gravity level measuring frame according to claim 2, characterized in that: The upper end of the main plate (1) is provided with a fourth placement groove (318). The main plate (1) is fixedly connected to a second motor (319) in the fourth placement groove (318). The transmission shaft end of the second motor (319) is fixedly connected to a gear (317). The side of the fixing body (33) is fixedly connected to a toothed ring (316) that meshes with the gear (317).

5. A center of gravity level measuring frame according to claim 1, characterized in that: The balancing mechanism (4) includes four symmetrical fifth placement slots (42) opened at the lower end of the main body plate (1). The main body plate (1) is fixedly connected to a sixth electric telescopic rod (43) in the fifth placement slot (42). The lower ends of the four sixth electric telescopic rods (43) are respectively provided with a fixing shell (48), and the lower ends of the four fixing shells (48) are respectively fixedly connected with a support base (44).

6. A center of gravity level measuring frame according to claim 5, characterized in that: The upper ends of the four fixed shells (48) are respectively provided with receiving grooves (47), the four sixth electric telescopic rods (43) are respectively rotatably connected with hinge bodies (45) in the receiving grooves (47), the four fixed shells (48) are respectively fixedly connected with fixed rods (46) in the receiving grooves (47), the hinge bodies (45) and the fixed rods (46) are rotatably connected, and the upper end of the main body plate (1) is fixedly connected with a level measuring instrument (41).

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