A center of gravity measuring device and a center of gravity measuring system

Abstract

This application provides a center of gravity measuring device and a center of gravity measuring system. The center of gravity measuring device includes a worktable, a sliding assembly, and a load-bearing assembly. The sliding assembly includes a first sliding beam and a second sliding beam. The load-bearing assembly includes a sliding plate and multiple legs. The legs have elastic segments adapted for elastic deformation. When there is no workpiece on the sliding plate, the sliding plate is spaced apart from the first and second sliding beams, or the sliding plate has zero-pressure contact with the first and second sliding beams. When the workpiece is placed on the sliding plate, the workpiece causes the elastic segments to deform, so that there is contact pressure between the sliding plate and the first sliding beam, and / or, there is contact pressure between the sliding plate and the second sliding beam. The center of gravity measuring device according to this application is simple and convenient to operate, requiring neither hoisting nor weighing of the workpiece. It can be applied to workpieces of any weight, and the measurement method is simple, convenient, and has high accuracy.

Description

Technical Field

[0001] This application relates to the field of center of gravity measurement technology, and in particular to a center of gravity measurement device and a center of gravity measurement system. Background Technology

[0002] In the research and manufacturing of large workpieces such as complete vehicles and aircraft, the center of gravity parameter is a critical parameter, directly affecting motion performance and safety performance. Therefore, measuring the center of gravity parameter is essential and indispensable in the research and manufacturing process of large workpieces such as complete vehicles and aircraft. Due to the constraints of size and weight, current methods for measuring the center of gravity of large workpieces mostly employ suspension methods or weighing calculation methods. In practice, suspension methods are difficult to use for hoisting large parts and are inconvenient to measure; weighing calculation methods lack accuracy in coordinate parameter conversion, thus becoming a pain point in the industry. Utility Model Content

[0003] This application provides a center of gravity measuring device and a center of gravity measuring system, which aim to improve the problems of difficult and inaccurate measurement of large workpieces.

[0004] According to an embodiment of this application, the center of gravity measuring device includes: a worktable having a working surface parallel to a horizontal plane; a sliding assembly including a first sliding beam and a second sliding beam, both extending along a first direction and slidable along a second direction, the upper surfaces of the first and second sliding beams being parallel and coplanar with the horizontal plane; and a support assembly including a sliding plate and multiple legs, the sliding plate being disposed on the upper side of the first and second sliding beams, the multiple legs being connected to the sliding plate for supporting the sliding plate, the lower ends of the legs being movably disposed on the working surface, and the legs having elastic segments in the vertical direction, the elastic segments being adapted for elastic deformation.

[0005] According to the embodiment of this application, the center of gravity measuring device can obtain the vertical plane passing through the center of gravity of the test piece by moving the first sliding beam and the second sliding beam toward each other. The position of the center of gravity of the test piece can be obtained through multiple vertical planes. The operation is simple and convenient, without the need to hoist or weigh the test piece. It only needs to fix the test piece on the worktable. It can be applied to test pieces of any weight. The measurement method is simple and convenient, and the measurement accuracy is high.

[0006] In some embodiments of this application, the working surface is provided with a guide member, and both the first sliding beam and the second sliding beam are provided with a guide portion that cooperates with the guide member. The guide member is used to guide the first sliding beam and the second sliding beam to slide along the second direction.

[0007] In the above technical solution, the cooperation of the guide component and the guide part can make the first sliding beam and the second sliding beam move in a direction that moves closer to each other. The first sliding beam and the second sliding beam are not easy to tilt, which can improve the measurement accuracy of the center of gravity position of the test piece. In addition, it can also reduce the problems of jamming and collision during the sliding of the first sliding beam and the second sliding beam, reduce the probability of wear and failure, and thus extend the service life of the center of gravity measuring device.

[0008] In some embodiments of this application, the guide includes a slide rail extending along the second direction, and the guide portion includes a groove that mates with the slide rail.

[0009] In the above technical solution, the slide rail and slide groove can fit together well, providing a rigid guide path for the first and second sliding beams. This allows the first and second sliding beams to slide along the second direction, preventing them from shifting or tilting, and significantly improving their sliding directionality and stability. Furthermore, the structure of the slide rail and slide groove ensures that the sliding trajectories of the first and second sliding beams are at roughly the same height, promoting coordinated and synchronized movements. The stable sliding state also makes the operation of the first and second sliding beams smoother, reducing vibration and noise.

[0010] In some embodiments of this application, multiple slide rails are provided, and the multiple slide rails are spaced apart along the first direction.

[0011] In the above technical solution, the spaced-out slide rails can effectively distribute the pressure on the first and second sliding beams, preventing excessive stress at a single point from causing deformation or damage to the slide rails, and improving the load-bearing capacity and durability of the guide components. Furthermore, the synchronous guidance of multiple slide rails can further constrain the posture of the first and second sliding beams, preventing them from tilting or twisting during sliding, ensuring the straightness of the first and second sliding beams along the second direction, and improving operational accuracy. Simultaneously, the spaced-out layout makes the stress on the first and second sliding beams more even, reducing localized wear and lowering maintenance costs.

[0012] In some embodiments of this application, a first indicator is provided on the first sliding beam and a second indicator is provided on the second sliding beam. The first indicator has a first indicator surface and the second indicator has a second indicator surface. When the first sliding beam and the second sliding beam move toward each other, the first indicator surface and the second indicator surface are adapted to fit together. Both the first indicator surface and the second indicator surface are perpendicular to the horizontal plane.

[0013] In the above technical solution, by setting a first indicator and a second indicator, and by making the first indicator have a first indicator surface and the second indicator have a second indicator surface, the vertical plane of the test piece can be obtained better through the first indicator surface and the second indicator surface, and thus the center of gravity of the test piece can be obtained better. This can reduce costs while ensuring the measurement accuracy of the center of gravity of the test piece.

[0014] In some embodiments of this application, the first sliding beam has a first beam surface on the side facing the second sliding beam, and the second sliding beam has a second beam surface on the side facing the first sliding beam. The first beam surface is coplanar with the first indicator surface, and the second beam surface is coplanar with the second indicator surface.

[0015] In the above technical solution, when the first sliding beam and the second sliding beam move toward each other, in order to avoid the first indicator and the second indicator from contacting each other prematurely, the first beam surface and the first indicator surface can be made coplanar, and the second beam surface and the second indicator surface can be made coplanar. When the first beam surface and the second beam surface contact each other, the first indicator and the second indicator can contact each other synchronously. This setting can reduce the risk of the first indicator and the second indicator damaging each other.

[0016] In some embodiments of this application, the first indicator includes a first vertical beam and a first identification block, the lower end of the first vertical beam is connected to the first sliding beam, the upper end of the first vertical beam is connected to the first identification block, and the first identification block has the first indicating surface; the second indicator includes a second vertical beam and a second identification block, the lower end of the second vertical beam is connected to the second sliding beam, the upper end of the second vertical beam is connected to the second identification block, and the second identification block has the second indicating surface.

[0017] In the above technical solution, the first indicator can make the first identification block located on the upper side of the slide plate through the first vertical beam, and the second indicator can also make the second identification block located on the upper side of the slide plate through the second vertical beam. Thus, when the first identification block and the second identification block abut against each other to form a vertical plane, the acquisition module can easily acquire the first identification block and the second identification block, thereby obtaining a better vertical plane and reducing acquisition errors. As a result, the measurement accuracy of the center of gravity of the test piece can be improved.

[0018] In some embodiments of this application, the first identification block and the second identification block are both hemispheres, the two hemispheres have the same diameter, and are spliced ​​into a sphere when the first indicator surface and the second indicator surface are attached.

[0019] In the above technical solution, the design of the shape and size of the first and second identification blocks facilitates scanning of the first and second identification blocks, and also facilitates the determination of whether the first and second identification blocks are in a fitted state, reducing misjudgments caused by the irregular shape of the first and second identification blocks. The design of the same diameter makes the image or data obtained by the acquisition module clearer and more accurate, thereby improving recognition efficiency and accuracy.

[0020] In some embodiments of this application, the elastic segment includes a constant force spring.

[0021] In the above technical solution, by setting a constant force spring, the influence of the gravity of the sliding plate on the center of gravity measuring device can be weakened, thereby improving the measurement accuracy of the center of gravity measuring device.

[0022] This application also proposes a center of gravity measurement system having the center of gravity measurement device described in the above embodiments.

[0023] The center of gravity measurement system according to an embodiment of this application includes a center of gravity measurement device, an acquisition module, and a fitting module as described in the above embodiments. The first sliding beam and the second sliding beam are adapted to approach and contact each other, and there is a contact surface between the first sliding beam and the second sliding beam. The acquisition module is used to acquire the relative position between the contact surface and the test piece. The fitting module is adapted to fit the multiple contact surfaces acquired by the acquisition module onto the test piece, so as to acquire the center of gravity of the test piece by acquiring the points or lines intersecting between the multiple contact surfaces.

[0024] The center of gravity measurement system according to the embodiments of this application, by setting the center of gravity measurement device of the above embodiments, does not require hoisting of the test piece or bearing the weight of the test piece. It only needs to fix the test piece on the worktable. It can be applied to test pieces of any weight. The measurement method is simple and convenient, and the measurement accuracy is high.

[0025] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the structure of a center of gravity measuring device provided in an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the structure of the first and second sliding beams of the center of gravity measuring device provided in an embodiment of this application.

[0029] Figure 3 This is a partial schematic diagram of the first and second sliding beams in the contact state provided in an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the support leg provided in one embodiment of this application.

[0031] Figure 5 This is a schematic diagram showing the relative position of the test piece and the first vertical plane according to an embodiment of this application.

[0032] Figure 6 This is a schematic diagram showing the relative position of the test piece and the second vertical plane according to an embodiment of this application.

[0033] Figure 7 This is a schematic diagram showing the relative positions of the test piece and the first and second vertical planes according to an embodiment of this application.

[0034] Figure 8 This is a schematic diagram showing the relative positions of the test piece and the third and fourth vertical planes according to an embodiment of this application.

[0035] Figure 9 This is a schematic diagram showing the relative position of the test piece to be tested with respect to the first and second vertical lines, according to an embodiment of this application.

[0036] Figure label:

[0037] 100. Center of gravity measuring device; 1. Workbench; 11. Working surface; 21. First sliding beam; 22. Second sliding beam; 3. Slide plate; 4. Support leg; 41. Elastic section; 42. Caster wheel; 5. Slide rail; 51. Slide groove; 61. First indicator; 611. First vertical beam; 612. First identification block; 62. Second indicator; 621. Second vertical beam; 622. Second identification block; 7. Component to be measured; 81. First vertical plane; 82. Second vertical plane; 83. Third vertical plane; 84. Fourth vertical plane; 91. First vertical line; 92. Second vertical line; 10. Center of gravity; X, First direction; Y, Second direction. Detailed Implementation

[0038] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0039] In the research and manufacturing of large workpieces such as complete vehicles and aircraft, the center of gravity parameter is a critical parameter, directly affecting motion performance and safety performance. Therefore, measuring the center of gravity parameter is essential and indispensable in the research and manufacturing process of large workpieces such as complete vehicles and aircraft. Due to the constraints of size and weight, current methods for measuring the center of gravity of large workpieces mostly employ suspension methods or weighing calculation methods. In practice, suspension methods are difficult to use for hoisting large parts and are inconvenient to measure; weighing calculation methods lack accuracy in coordinate parameter conversion, thus becoming a pain point in the industry.

[0040] like Figures 1-9 As shown in the embodiment of this application, a center of gravity measuring device 100 includes a worktable 1, a sliding assembly, and a load-bearing assembly. The worktable 1 has a working surface 11, which is parallel to the horizontal plane. The sliding assembly includes a first sliding beam 21 and a second sliding beam 22, both extending along a first direction X and both slidable along a second direction Y. The upper side surfaces of the first sliding beam 21 and the second sliding beam 22 are parallel to and coplanar with the horizontal plane. The load-bearing assembly includes a sliding plate 3 and multiple support legs 4. The sliding plate 3 is disposed on the upper side of the first sliding beam 21 and the second sliding beam 22. Multiple support legs 4 are connected to the slide plate 3 to support the slide plate 3. The lower end of the support leg 4 is movably set on the working surface 11. Along the vertical direction, the support leg 4 has an elastic segment 41, which is suitable for elastic deformation. When there is no test piece 7 on the slide plate 3, the slide plate 3 is spaced apart from the first sliding beam 21 and the second sliding beam 22, or the slide plate 3 has zero pressure contact with the first sliding beam 21 and the second sliding beam 22. When the test piece 7 is placed on the slide plate 3, the test piece 7 is used to deform the elastic segment 41 so that there is contact pressure between the slide plate 3 and the first sliding beam 21, and / or there is contact pressure between the slide plate 3 and the second sliding beam 22.

[0041] In other words, when there is no test piece 7 on the slide plate 3, the slide plate 3 has its own weight. When the slide plate 3 is supported by the support leg 4, the elastic segment 41 can deform to support the slide plate 3. The deformation of the elastic segment 41 can convert the gravitational potential energy of the slide plate 3 into elastic potential energy, that is, the support leg 4 can effectively support the slide plate 3. The slide plate 3 can be spaced apart from the first sliding beam 21 and the second sliding beam 22 in the vertical direction. The slide plate 3 can also have zero pressure contact with the first sliding beam 21 and the second sliding beam 22. In this way, the influence of the gravity of the slide plate 3 on the measurement of the center of gravity of the test piece 7 can be reduced or even eliminated.

[0042] When the test piece 7 is placed on the slide plate 3, the test piece 7 can be fixed by a fixing structure to prevent the test piece 7 from moving on the slide plate 3 and thus affecting the measurement of the center of gravity of the test piece 7. The fixing structure can be a positioning groove integrally formed on the slide plate 3 or an independent structural component. If the fixing structure is an independent structural component, it can be understood that the fixing structure has no effect on the center of gravity 10 of the test piece 7, or has a small effect.

[0043] Furthermore, after the test piece 7 is placed on the slide plate 3 and its position is stable, the elastic segment 41 can be further deformed due to the weight of the test piece 7. At this time, the test piece 7 can be supported by the slide plate 3 on the first sliding beam 21 and the second sliding beam 22. It should be noted that the test piece 7 does not need to be deliberately placed in the exact middle of the first sliding beam 21 and the second sliding beam 22. That is, the deformation of the elastic segment 41 of the support leg 4 near the first sliding beam 21 can be different from the deformation of the elastic segment 41 of the support leg 4 near the second sliding beam 22. As a result, the slide plate 3 will tilt. For example, the pressure between the slide plate 3 and the first sliding beam 21 is greater than the pressure between the slide plate 3 and the second sliding beam 22. At this time, the first sliding beam 21 and the second sliding beam 22 can move towards each other. During this process, the first sliding beam 21 and the second sliding beam 22 can start moving at the same time or at different times. This application does not impose any restrictions.

[0044] Furthermore, when the first sliding beam 21 and the second sliding beam 22 move towards each other, the pressure between the slide plate 3 and the first sliding beam 21 is greater than the pressure between the slide plate 3 and the second sliding beam 22. Therefore, the end of the slide plate 3 closest to the first sliding beam 21 tilts downward or has a tendency to tilt downward. Here, the tendency to tilt downward can be referred to as the zero-pressure contact mentioned above, that is, the lower side of the slide plate 3 is in contact with both the first sliding beam 21 and the second sliding beam 22. Since the upper side of the first sliding beam 21 and the upper side of the second sliding beam 22 are coplanar and parallel to the horizontal plane, the slide plate 3 is not prone to tilting under the support of the first sliding beam 21 and the second sliding beam 22, even if the position of the test piece 7 is close to the first sliding beam 21 or the second sliding beam 22. However, in terms of actual pressure, the pressure between the slide plate 3 and the first sliding beam 21 is greater than the pressure between the slide plate 3 and the second sliding beam 22. Therefore, this application refers to this state as having a tendency to tilt downward.

[0045] Taking the pressure between the slide plate 3 and the first sliding beam 21 as greater than the pressure between the slide plate 3 and the second sliding beam 22 as an example, due to the pressure, when the first sliding beam 21 and the second sliding beam 22 move, friction is generated between the slide plate 3 and the first sliding beam 21, and between the slide plate 3 and the second sliding beam 22. Under the action of friction, the slide plate 3 and the test piece 7 on the slide plate 3 can follow the movement of the first sliding beam 21 and the second sliding beam 22. Therefore, the motion state of the first sliding beam 21, the second sliding beam 22, and the slide plate 3 can be as follows:

[0046] When the friction is not large enough, or when the friction does not reach a level that allows the slide plate 3 and the test piece 7 on the slide plate 3 to move synchronously with the first sliding beam 21 or the second sliding beam 22, relative movement can occur between the first sliding beam 21 and the slide plate 3, and between the second sliding beam 22 and the slide plate 3. Since the pressure between the slide plate 3 and the first sliding beam 21 is greater than the pressure between the slide plate 3 and the second sliding beam 22, the relative movement distance between the slide plate 3 and the second sliding beam 22 is greater than the relative movement distance between the slide plate 3 and the first sliding beam 21. For the sake of simplicity and ease of understanding, the following description will focus on the relative movement state between the slide plate 3 and the first sliding beam 21.

[0047] During the movement of the first sliding beam 21, there is relative movement between the skateboard 3 and the first sliding beam 21, which is equivalent to changing the support position of the first sliding beam 21 on the skateboard 3, thereby changing the tilt state of the skateboard 3. Therefore, the relative movement state between the skateboard 3 and the first sliding beam 21 will also change. For example, the skateboard 3 may move synchronously with the first sliding beam 21, or the relative movement distance between the skateboard 3 and the first sliding beam 21 may increase or decrease. Similarly, a similar state exists between the skateboard 3 and the second sliding beam 22. Therefore, as the first sliding beam 21 and the second sliding beam 22 move towards each other, the first sliding beam 21 and the second sliding beam 22 affect the skateboard. The support position of 3 changes continuously, resulting in a state where the first sliding beam 21, the second sliding beam 22, and the sliding plate 3 are in a state where the sliding plate 3 is stationary, and only the first sliding beam 21 and the second sliding beam 22 move towards each other. Thus, in the second direction Y, the center position between the first sliding beam 21 and the second sliding beam 22 is the position of the center of gravity 10 of the test piece 7. To facilitate the acquisition of the position of the center of gravity 10, the first sliding beam 21 and the second sliding beam 22 can be made to fit together. The center of gravity 10 of the test piece 7 is located on the fitting surface between the first sliding beam 21 and the second sliding beam 22. This fitting surface passing through the center of gravity 10 of the test piece 7 can be called the first vertical plane 81.

[0048] Therefore, the test piece 7 can be adjusted to multiple different fixed postures, and the above operation process can be repeated, that is, the first sliding beam 21 and the second sliding beam 22 can be brought closer to each other. Then, a second vertical plane 82, a third vertical plane 83, a fourth vertical plane 84, etc. It can be understood that the positions of the first vertical plane 81, the second vertical plane 82, the third vertical plane 83, and the fourth vertical plane 84 relative to the test piece 7 are determined and unique. Therefore, on the test piece 7, the first vertical plane 81 and the second vertical plane 82 can obtain an intersecting first vertical line 91, and the third vertical plane 83 and the fourth vertical plane 84 can obtain an intersecting second vertical line 92. The intersection of the first vertical line 91 and the second vertical line 92 can obtain an intersection point, which is the position of the center of gravity 10 of the test piece 7.

[0049] With the center of gravity measuring device 100 of this application, there is no need to hoist or weigh the test piece 7. It is only necessary to fix the test piece 7 on the workbench 1, and then move the first sliding beam 21 and the second sliding beam 22 toward each other to obtain the first vertical plane 81. Then, by adjusting the fixed angle of the test piece 7, the second vertical plane 82, the third vertical plane 83, and the fourth vertical plane 84 can be obtained, thereby obtaining the position of the center of gravity 10 of the test piece 7. Of course, for further verification, it can be performed more times to obtain more vertical planes. This application does not impose any restrictions.

[0050] In addition, in the above embodiments, the first sliding beam 21 and the second sliding beam 22 can move at the same speed when they move toward each other. The driving method can be motor drive or hydraulic drive, etc. When the weight of the test piece 7 is small and the size of the center of gravity measuring device 100 is also small, it can also be driven manually. Of course, a transmission component can also be set in the driving structure. This application does not limit the above content.

[0051] According to the embodiment of this application, the center of gravity measuring device 100 moves the first sliding beam 21 and the second sliding beam 22 toward each other, and can obtain the vertical plane passing through the center of gravity 10 of the test piece 7. The position of the center of gravity 10 of the test piece 7 can be obtained through multiple vertical planes. The operation is simple and convenient. There is no need to hoist the test piece 7 or weigh the test piece 7. It is only necessary to fix the test piece 7 on the workbench 1. It can be applied to test pieces 7 of any weight. The measurement method is simple and convenient and the measurement accuracy is high.

[0052] For example, the test piece 7 can be a large workpiece such as a complete vehicle or an aircraft, or a piece of equipment, etc. This application does not limit it.

[0053] In some embodiments of this application, the working surface 11 is provided with a guide member, and the first sliding beam 21 and the second sliding beam 22 are both provided with guide portions that cooperate with the guide member. The guide member is used to guide the first sliding beam 21 and the second sliding beam 22 to slide along the second direction Y.

[0054] In other words, through the cooperation of the guide and the guide part, when the first sliding beam 21 and the second sliding beam 22 move in the direction of moving closer to each other, the movement state of the first sliding beam 21 and the second sliding beam 22 is relatively stable, and the first sliding beam 21 and the second sliding beam 22 are not easy to tilt, thereby improving the measurement accuracy of the center of gravity position of the test piece 7. In addition, it can also reduce problems such as jamming and collision during the sliding of the first sliding beam 21 and the second sliding beam 22, reduce wear and the probability of failure, and thus extend the service life of the center of gravity measuring device 100.

[0055] In some embodiments of this application, such as Figures 1-3 As shown, the guide includes a slide rail 5, which extends along the second direction Y, and the guide portion includes a groove 51 that mates with the slide rail 5.

[0056] In other words, the slide rail 5 and the slide groove 51 can fit together well, providing a rigid guide path for the first sliding beam 21 and the second sliding beam 22. This allows the first sliding beam 21 and the second sliding beam 22 to slide along the second direction Y, preventing problems such as offset or skew of the first sliding beam 21 and the second sliding beam 22, and significantly improving the sliding directionality and stability of the first sliding beam 21 and the second sliding beam 22. In addition, the structure of the slide rail 5 and the slide groove 51 ensures that the sliding trajectories of the first sliding beam 21 and the second sliding beam 22 are relatively consistent, which can better coordinate and synchronize the movements of the first sliding beam 21 and the second sliding beam 22. At the same time, the stable sliding state makes the operation of the first sliding beam 21 and the second sliding beam 22 smoother, reducing vibration and noise.

[0057] In some embodiments of this application, such as Figure 1 As shown, multiple slide rails 5 are provided, and the multiple slide rails 5 are spaced apart along the first direction X.

[0058] In other words, the spaced-out slide rails 5 can effectively distribute the pressure on the first sliding beam 21 and the second sliding beam 22, preventing excessive stress at a single point from causing deformation or damage to the slide rail 5, thus improving the load-bearing capacity and durability of the guide components. Furthermore, the synchronous guidance of multiple slide rails 5 can further constrain the posture of the first sliding beam 21 and the second sliding beam 22, preventing them from tilting or twisting during sliding, ensuring the straightness of the first sliding beam 21 and the second sliding beam 22 along the second direction Y, and improving operational accuracy. Simultaneously, the spaced-out layout makes the stress on the first sliding beam 21 and the second sliding beam 22 more even, reducing localized wear and lowering maintenance costs.

[0059] In some embodiments of this application, such as Figures 1-6 As shown, a first indicator 61 is provided on the first sliding beam 21, and a second indicator 62 is provided on the second sliding beam 22. The first indicator 61 has a first indicator surface, and the second indicator 62 has a second indicator surface. When the first sliding beam 21 and the second sliding beam 22 move toward each other, the first indicator surface and the second indicator surface are adapted to fit together. Both the first indicator surface and the second indicator surface are perpendicular to the horizontal plane.

[0060] In other words, when the first sliding beam 21 and the second sliding beam 22 move toward each other, in order to obtain a better vertical plane, the first indicator 61 and the second indicator 62 can be set, and both the first indicator surface and the second indicator surface can be perpendicular to the horizontal plane. In this way, when the first indicator surface and the second indicator surface are in contact, the first indicator surface or the second indicator surface at that position can be directly used as the vertical plane. Furthermore, when the test piece 7 and the vertical plane are acquired by the acquisition module, the test piece 7, the first indicator 61 and the second indicator 62 can be scanned directly without the need to construct the vertical plane. This simplifies the calculation content in the center of gravity measurement system and reduces the running complexity of the program in the center of gravity measurement system, thereby reducing costs.

[0061] For example, the acquisition module can be an infrared sensor or a camera, etc., and this application does not limit it.

[0062] In the above example, by setting a first indicator 61 and a second indicator 62, and by making the first indicator 61 have a first indicator surface and the second indicator 62 have a second indicator surface, the vertical plane of the test piece 7 can be obtained better through the first indicator surface and the second indicator surface, and thus the center of gravity 10 of the test piece 7 can be obtained better. This can reduce costs while ensuring the measurement accuracy of the center of gravity position of the test piece 7.

[0063] In some embodiments of this application, the side of the first sliding beam 21 facing the second sliding beam 22 has a first beam surface, and the side of the second sliding beam 22 facing the first sliding beam 21 has a second beam surface. The first beam surface is coplanar with the first indicator surface, and the second beam surface is coplanar with the second indicator surface.

[0064] In other words, when the first sliding beam 21 and the second sliding beam 22 move toward each other, in order to avoid the first indicator 61 and the second indicator 62 from contacting each other prematurely, the first beam surface and the first indicator surface can be made coplanar, and the second beam surface and the second indicator surface can be made coplanar. When the first beam surface and the second beam surface contact each other, the first indicator 61 and the second indicator 62 can contact each other synchronously. This setting can reduce the risk of the first indicator 61 and the second indicator 62 being crushed.

[0065] In some embodiments of this application, such as Figures 1-6 As shown, the first indicator 61 includes a first vertical beam 611 and a first identification block 612. The lower end of the first vertical beam 611 is connected to the first sliding beam 21, and the upper end of the first vertical beam 611 is connected to the first identification block 612. The first identification block 612 has a first indicator surface. The second indicator 62 includes a second vertical beam 621 and a second identification block 622. The lower end of the second vertical beam 621 is connected to the second sliding beam 22, and the upper end of the second vertical beam 621 is connected to the second identification block 622. The second identification block 622 has a second indicator surface.

[0066] In other words, the first indicator 61 can make the first identification block 612 located on the upper side of the slide plate 3 through the first vertical beam 611, and the second indicator 62 can make the second identification block 622 located on the upper side of the slide plate 3 through the second vertical beam 621. Thus, when the first identification block 612 and the second identification block 622 abut against each other to form a vertical plane, the acquisition module can easily acquire the first identification block 612 and the second identification block 622, thereby obtaining a better vertical plane and reducing measurement errors. As a result, the measurement accuracy of the center of gravity 10 of the test piece 7 can be improved.

[0067] In some embodiments of this application, such as Figures 1-3 As shown, the first identification block 612 and the second identification block 622 are both hemispheres with equal diameters, and they are spliced ​​into a sphere when the first indicator surface and the second indicator surface are in contact.

[0068] The curved surface of the hemisphere effectively reduces scanning blind spots, allowing the acquisition module to more easily capture the contour information of the recognition block regardless of the scanning angle, thus improving recognition convenience. Furthermore, the two hemispheres, when joined together, form a complete sphere. This symmetrical and regular shape facilitates rapid recognition and positioning by the acquisition module. Based on the standard morphological characteristics of the sphere, the acquisition module can better determine whether the first recognition block 612 and the second recognition block 622 are in a fitted state, reducing misjudgments caused by the irregular shapes of the first and second recognition blocks 612 and 622.

[0069] Furthermore, the uniform diameter design ensures a tight fit, preventing gaps or misalignments from affecting scanning results. The smooth surface of the sphere reduces interference during scanning, resulting in clearer and more accurate images or data acquired by the acquisition module, thereby improving recognition efficiency and accuracy.

[0070] In the above example, the design of the shape and size of the first identification block 612 and the second identification block 622 facilitates scanning of the first identification block 612 and the second identification block 622, and also facilitates the determination of whether the first identification block 612 and the second identification block 622 are in a fitted state, reducing misjudgments caused by the irregular shape of the first identification block 612 and the second identification block 622. The design of the same diameter makes the image or data obtained by the acquisition module clearer and more accurate, thereby improving recognition efficiency and accuracy.

[0071] In some embodiments of this application, the elastic segment 41 includes a constant-force spring. A constant-force spring is a special type of spring whose core characteristic is that it can provide an almost constant force within a certain deformation range, while the force of an ordinary spring changes significantly with the amount of deformation (elongation or compression) (following Hooke's Law: F = kx, where k is the spring constant and x is the deformation). By setting a constant-force spring, this application can better weaken the influence of the gravity of the slide plate 3 on the center of gravity measuring device 100, thereby improving the measurement accuracy of the center of gravity measuring device 100.

[0072] In some embodiments of this application, such as Figure 1 As shown, there are four support legs 4. The skateboard 3 is a rectangular plate structure. The four support legs 4 are respectively arranged at the four corners of the rectangle. The bottom of the support legs 4 can be equipped with casters 42. This application does not limit this.

[0073] In some embodiments of this application, such as Figure 1 As shown, there are two slide rails 5. In the first direction X, the slide plate 3 is located between the two slide rails 5, or in other words, the two slide rails 5 are located on both sides of the slide plate 3 in the first direction X. This reduces the interference of the slide rails 5 on the slide plate 3.

[0074] This application also proposes a center of gravity measurement system having the center of gravity measurement device 100 of the above embodiments.

[0075] According to the embodiment of this application, the center of gravity measurement system includes a center of gravity measurement device 100, an acquisition module, and a fitting module. A first sliding beam 21 and a second sliding beam 22 are adapted to approach and contact each other, and a contact surface is provided between the first sliding beam 21 and the second sliding beam 22. The acquisition module is used to acquire the relative position between the contact surface and the workpiece 7 to be measured. The fitting module is adapted to fit the multiple contact surfaces acquired by the acquisition module onto the workpiece 7 to acquire the center of gravity 10 of the workpiece 7 by acquiring the points or lines intersecting between the multiple contact surfaces.

[0076] In other words, such as Figure 1 , Figures 5-9As shown, with the center of gravity measuring device 100 of this application, there is no need to hoist or weigh the workpiece 7. The workpiece 7 only needs to be fixed on the workbench 1, and then the first sliding beam 21 and the second sliding beam 22 move towards each other to obtain the first vertical plane 81. Then, by adjusting the fixed angle of the workpiece 7, the second vertical plane 82, the third vertical plane 83, and the fourth vertical plane 84 can be obtained. The positions of the first vertical plane 81, the second vertical plane 82, the third vertical plane 83, and the fourth vertical plane 84 relative to the workpiece 7 are all definite and unique. Therefore, the positions of the first vertical plane 81, the second vertical plane 82, the third vertical plane 83, and the fourth vertical plane 84 relative to the workpiece 7 are obtained by the acquisition module. After obtaining the relative position information, the fitting module can converge the first vertical plane 81, the second vertical plane 82, the third vertical plane 83, and the fourth vertical plane 84 onto the same measuring piece. For example, the first vertical plane 81 and the second vertical plane 82 can intersect to form a first vertical line 91, and the third vertical plane 83 and the fourth vertical plane 84 can intersect to form a second vertical line 92. The intersection of the first vertical line 91 and the second vertical line 92 forms an intersection point, which is the position of the center of gravity 10 of the test piece 7. The operation is simple and convenient, without the need to hoist or weigh the test piece 7. It only requires fixing the test piece 7 on the workbench 1. It can be applied to test pieces 7 of any weight. The measurement method is simple and convenient, and the measurement accuracy is high.

[0077] According to the center of gravity measurement system of the present application embodiment, by setting the center of gravity measurement device 100 of the above embodiment, there is no need to hoist the test piece 7 or weigh the test piece 7. It is only necessary to fix the test piece 7 on the workbench 1. It can be applied to test pieces 7 of any weight. The measurement method is simple and convenient and the measurement accuracy is high.

[0078] Other configurations and operations of the center of gravity measuring device 100 and the center of gravity measuring system according to embodiments of this application are known to those skilled in the art and will not be described in detail here. In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A center of gravity measuring device (100), characterized in that, include: A workbench (1) having a working surface (11) that is parallel to a horizontal plane; The sliding assembly includes a first sliding beam (21) and a second sliding beam (22), both of which extend along a first direction (X) and are slidable along a second direction (Y). The upper side of the first sliding beam (21) and the upper side of the second sliding beam (22) are both parallel to and coplanar with the horizontal plane. The support assembly includes a slide plate (3) and multiple legs (4). The slide plate (3) is disposed on the upper side of the first sliding beam (21) and the second sliding beam (22). The multiple legs (4) are connected to the slide plate (3) for supporting the slide plate (3). The lower end of the legs (4) is movably disposed on the working surface (11). Along the vertical direction, the legs (4) have an elastic segment (41) that is adapted to elastic deformation.

2. The center of gravity measuring device (100) according to claim 1, characterized in that, The working surface (11) is provided with a guide member, and the first sliding beam (21) and the second sliding beam (22) are each provided with a guide part that cooperates with the guide member. The guide member is used to guide the first sliding beam (21) and the second sliding beam (22) to slide along the second direction (Y).

3. The center of gravity measuring device (100) according to claim 2, characterized in that, The guide includes a slide rail (5) extending along the second direction (Y), and the guide portion includes a groove (51) that mates with the slide rail (5).

4. The center of gravity measuring device (100) according to claim 3, characterized in that, Multiple slide rails (5) are provided, and the multiple slide rails (5) are spaced apart along the first direction (X).

5. The center of gravity measuring device (100) according to any one of claims 1-4, characterized in that, The first sliding beam (21) is provided with a first indicator (61), and the second sliding beam (22) is provided with a second indicator (62). The first indicator (61) has a first indicator surface, and the second indicator (62) has a second indicator surface. When the first sliding beam (21) and the second sliding beam (22) move toward each other, the first indicator surface and the second indicator surface are adapted to fit together. The first indicator surface and the second indicator surface are both perpendicular to the horizontal plane.

6. The center of gravity measuring device (100) according to claim 5, characterized in that, The first sliding beam (21) has a first beam surface on the side facing the second sliding beam (22), and the second sliding beam (22) has a second beam surface on the side facing the first sliding beam (21). The first beam surface is coplanar with the first indicator surface, and the second beam surface is coplanar with the second indicator surface.

7. The center of gravity measuring device (100) according to claim 5, characterized in that, The first indicator (61) includes a first vertical beam (611) and a first identification block (612). The lower end of the first vertical beam (611) is connected to the first sliding beam (21), and the upper end of the first vertical beam (611) is connected to the first identification block (612). The first identification block (612) has the first indicator surface. The second indicator (62) includes a second vertical beam (621) and a second identification block (622). The lower end of the second vertical beam (621) is connected to the second sliding beam (22), and the upper end of the second vertical beam (621) is connected to the second identification block (622). The second identification block (622) has the second indicator surface.

8. The center of gravity measuring device (100) according to claim 7, characterized in that, The first identification block (612) and the second identification block (622) are both hemispheres with equal diameters, and are joined together to form a sphere when the first indicator surface and the second indicator surface are in contact.

9. The center of gravity measuring device (100) according to claim 1, characterized in that, The elastic segment (41) includes a constant force spring.

10. A center of gravity measurement system, characterized in that, include: The center of gravity measuring device (100) according to any one of claims 1-9, wherein the first sliding beam (21) and the second sliding beam (22) are adapted to approach and contact each other, and the first sliding beam (21) and the second sliding beam (22) have a contact surface between them; Acquisition module, the acquisition module is used to acquire the relative position between the contact surface and the test piece (7); The fitting module is adapted to fit the multiple contact surfaces acquired by the acquisition module onto the test piece (7) so as to obtain the centroid (10) of the test piece (7) by acquiring the points or lines intersecting between the multiple contact surfaces.

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