Structure for measuring mass center of object

Abstract

The utility model discloses a structure for measuring the mass center of an object, which comprises a bottom plate, the top of the bottom plate is provided with a strain pressure sensor, one end of the strain pressure sensor is fixedly connected with the bottom plate through a first screw, a first sensor stress plate is arranged above one end of the strain pressure sensor, and a second sensor stress plate is arranged above the other end of the strain pressure sensor. The first sensor stress plate is fixedly connected with the strain pressure sensor through a second screw, an upper-layer bottom plate is arranged above the bottom bottom plate, one end of the upper-layer bottom plate is provided with a balancing weight, the balancing weight is fixedly connected with the upper-layer bottom plate through a third screw, and the bottom of one end of the balancing weight is fixedly connected with a ball screw. According to the utility model, the structure is simple, and the overall reliability is relatively high. The production process of each material is reasonable, the overall cost is low, and compared with other detection means, the device is high in measurement reliability and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of parts detection related products, in particular to a structure for measuring the mass center of an object. Background Art

[0002] In parts inspection in the aerospace and automotive industries, for example, helicopter parts, the center of mass of a component directly affects the stability of flight dynamics. Excessive deviation in the center of mass can cause vibrations during flight or even cause a crash. Therefore, ensuring that the center of mass of a component is within the specified range is crucial in the manufacturing of these parts.

[0003] Traditional parts are made of metal through a series of processing. However, during the manufacturing process, it is impossible to guarantee that the mass center of each component is within the standard range. Instead, the parts need to be tested for mass center first, and then the parts need to be counterweighted and balanced according to the measured data to ensure that the center of mass of the parts is qualified. This method is relatively cumbersome and time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of the present invention is to provide a structure for measuring the mass center of an object to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a structure for measuring the center of mass of an object, comprising a bottom base plate, a strain pressure sensor is provided on the top of the bottom base plate, one end of the strain pressure sensor is fixedly connected to the bottom base plate by a first screw, a first sensor force plate is provided above one end of the strain pressure sensor, the first sensor force plate is fixedly connected to the strain pressure sensor by a second screw, an upper base plate is provided above the bottom base plate, one end of the upper base plate is provided with a counterweight block, the counterweight block is fixedly connected to the upper base plate by a third screw, a ball head screw is fixedly connected to the bottom of one end of the counterweight block, the ball head screw is inserted into the upper base plate, a concave base is provided on one end of the bottom base plate, the concave base is fixedly connected to the bottom base plate by a fourth screw, a convex base is provided above the concave base, and the convex base is fixedly connected to the upper base plate by a fifth screw.

[0006] Preferably, four rectangular foot cups are fixedly connected to the bottom of the bottom base plate.

[0007] Preferably, the first screw, the second screw, the third screw, the fourth screw and the fifth screw are all hexagon socket screws.

[0008] Preferably, the bottom thread of the ball screw is sleeved with a hexagonal nut.

[0009] Preferably, the strain pressure sensor is a metal strain gauge pressure sensor.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] The structure of the mass center of the measuring object is achieved by setting the value of the strain pressure sensor to zero and then fixing the product on the upper base plate. The concave base acts as a fulcrum to bear the force and contacts the convex base. The two are connected in a floating manner. The purpose of the floating connection is to allow the strain pressure sensor to correctly read the data changes. The strain pressure sensor transmits the data to the computer through the circuit component. The ball screw is used to transmit the upper force. The sensor force plate and the strain pressure sensor are connected and fixed with screws, thereby increasing the force area of ​​the strain pressure sensor. The ball screw and the sensor force plate are in contact, so that the strain pressure sensor can correctly and stably read the force changes of the device. The structure of the utility model is simple and the overall reliability is strong. The production process of each material is reasonable and the overall cost is low. Compared with other detection methods, the measurement reliability of the device is high and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of a structure for measuring the mass center of an object according to the present invention;

[0013] Figure 2 This is a schematic diagram of the bottom structure of a structure for measuring the mass center of an object according to the present invention.

[0014] In the figure: 1. Foot cup; 2. Bottom base plate; 3. First screw; 4. Strain pressure sensor; 5. Second screw; 6. Sensor force plate; 7. Ball head screw; 8. Hexagonal nut; 9. Fourth screw; 10. Concave base; 11. Convex base; 12. Fifth screw; 13. Upper base plate; 14. Counterweight; 15. Third screw; 16. Product. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0018] See also Figure 1-2 , an embodiment provided by the utility model: a structure for measuring the center of mass of an object, comprising a bottom base plate 2, a strain pressure sensor 4 is provided on the top of the bottom base plate 2, one end of the strain pressure sensor 4 is fixedly connected to the bottom base plate 2 by a first screw 3, a first sensor force plate 6 is provided above one end of the strain pressure sensor 4, the first sensor force plate 6 is fixedly connected to the strain pressure sensor 4 by a second screw 5, an upper base plate 13 is provided above the bottom base plate 2, a counterweight 14 is provided at one end of the upper base plate 13, the counterweight 14 is fixedly connected to the upper base plate 13 by a third screw 15, a ball screw 7 is fixedly connected to the bottom of one end of the counterweight 14, the ball screw 7 is inserted into the upper base plate 13, a concave base 10 is provided on one end of the bottom base plate 2, the concave base 10 is connected to the bottom base plate 2 by a fourth screw 9 Fixed connection, a convex base 11 is provided above the concave base 10, and the convex base 11 is fixedly connected to the upper base plate 13 by the fifth screw 12. Specifically, the value of the strain pressure sensor 4 is set to zero, and then the product is fixed on the upper base plate 13. The concave base 10 acts as a fulcrum to bear the force and contacts the convex base 11. The two are floatingly connected. The purpose of the floating connection is to allow the strain pressure sensor 4 to correctly read the data changes. The strain pressure sensor 4 transmits the data to the computer through the circuit component. The ball head screw 7 is used to transmit the upper force. The sensor force plate 6 and the strain pressure sensor 4 are fixed with screws, thereby increasing the force area of ​​the strain pressure sensor 4. The ball head screw 7 is in contact with the sensor force plate 6, so that the strain pressure sensor 4 can correctly and stably read the force changes of the device.

[0019] In this embodiment, four rectangular foot cups 1 are fixedly connected to the bottom of the bottom base plate 2; the first screw 3, the second screw 5, the third screw 15, the fourth screw 9 and the fifth screw 12 are all hexagonal screws; the bottom thread of the ball head screw 7 is connected with a hexagonal nut 8; the strain pressure sensor 4 is a metal strain gauge pressure sensor.

[0020] Working principle: First, set the value of the strain pressure sensor 4 to zero, and then fix the product on the upper base plate 13. The concave base 10 acts as a fulcrum to bear the force and contacts the convex base 11. The two are floatingly connected. The purpose of the floating connection is to allow the strain pressure sensor 4 to correctly read the data changes. The strain pressure sensor 4 transmits the data to the computer through the circuit component. The ball head screw 7 is used to transmit the upper force. The sensor force plate 6 and the strain pressure sensor 4 are fixed with screws, thereby increasing the force area of ​​the strain pressure sensor 4. The ball head screw 7 and the sensor force plate 6 are in contact, so that the strain pressure sensor 4 can correctly and stably read the force changes of the device.

[0021] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A structure for measuring the center of mass of an object, comprising a bottom base plate (2), characterized in that: A strain pressure sensor (4) is provided on the top of the bottom base plate (2), one end of the strain pressure sensor (4) is fixedly connected to the bottom base plate (2) by a first screw (3), a first sensor force plate (6) is provided above one end of the strain pressure sensor (4), the first sensor force plate (6) is fixedly connected to the strain pressure sensor (4) by a second screw (5), an upper base plate (13) is provided above the bottom base plate (2), one end of the upper base plate (13) is provided with a counterweight (14), the counterweight (14) is connected to the upper base plate by a third screw (15), and the upper base plate (13) is fixedly connected to the upper base plate (13) by a third screw (15). The bottom of one end of the counterweight (14) is fixedly connected with a ball screw (7), and the ball screw (7) is inserted into the upper bottom plate (13). A concave base (10) is provided on one end of the bottom bottom plate (2), and the concave base (10) is fixedly connected to the bottom bottom plate (2) through a fourth screw (9). A convex base (11) is provided above the concave base (10), and the convex base (11) is fixedly connected to the upper bottom plate (13) through a fifth screw (12). A product (16) is fixedly connected to the top of one end of the upper bottom plate (13).

2. The structure for measuring the center of mass of an object according to claim 1, characterized in that: Four rectangular foot cups (1) are fixedly connected to the bottom of the bottom base plate (2).

3. The structure for measuring the center of mass of an object according to claim 1, characterized in that: The first screw (3), the second screw (5), the third screw (15), the fourth screw (9) and the fifth screw (12) are all hexagon socket screws.

4. The structure for measuring the center of mass of an object according to claim 1, characterized in that: The bottom thread of the ball screw (7) is sleeved with a hexagonal nut (8).

5. The structure for measuring the center of mass of an object according to claim 1, characterized in that: The strain pressure sensor (4) is a metal strain gauge pressure sensor.

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