A floating fulcrum device for centroid measurement

Abstract

A floating fulcrum device for centroid measurement, which relates to the technical field of mechanical support force transmission. The present invention is to solve the shortcomings of the existing support mechanism that the force is complex and it is easy to generate force components. The present invention includes an arc seat, a flat seat, a support ball, a plurality of elastic support columns and a plurality of rivets. The arc seat is arranged directly below the flat seat, and an arc groove is arranged in the middle of the upper end surface of the arc seat, and a cylindrical groove is arranged in the middle of the lower end surface of the flat seat. A support ball is arranged between the arc groove and the cylindrical groove, and the outer diameter of the support ball is greater than the sum of the maximum groove depth of the arc groove and the groove depth of the cylindrical groove. A plurality of elastic support columns are evenly distributed and floatingly arranged between the arc seat and the flat seat along the circumferential direction, and a plurality of rivets are evenly distributed and floatingly arranged between the arc seat and the flat seat along the circumferential direction. The present invention is used for component support and transmission of positive pressure.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical support force transmission, and in particular to a floating fulcrum device for centroid measurement. Background Art

[0002] With the development of mechanical and electronic technology, there is a need for tools that can accurately measure the center of mass of workpieces. Therefore, a support device that can transmit positive pressure without generating horizontal force or torque is required. Currently, most common fulcrum devices use screw connections and hinge connections. The transmission of force and torque is complex, which can easily bring external force to the sensor and greatly reduce the accuracy of center of mass measurement. Therefore, it is necessary to develop a floating fulcrum device that only transmits positive pressure. Summary of the invention

[0003] In order to solve the problem that the existing support transmission mechanism has complex and non-single force transmission, the present invention further proposes a new floating force transmission support mechanism relying on steel balls.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A floating fulcrum device for center of mass measurement includes an arc seat, a flat seat, a supporting ball, a plurality of elastic supporting columns and a plurality of rivets. The arc seat is arranged directly below the flat seat, an arc groove is arranged in the middle of the upper end surface of the arc seat, a cylindrical groove is arranged in the middle of the lower end surface of the flat seat, a supporting ball is arranged between the arc groove and the cylindrical groove, the outer diameter of the supporting ball is greater than the sum of the maximum groove depth of the arc groove and the groove depth of the cylindrical groove, a plurality of elastic supporting columns are evenly distributed and floatingly arranged between the arc seat and the flat seat along the circumferential direction, and a plurality of rivets are evenly distributed and floatingly arranged between the arc seat and the flat seat along the circumferential direction.

[0006] Furthermore, the upper end surface of the arc seat is evenly distributed with a plurality of lower column holes along the circumferential direction, and the lower end surface of the flat seat is evenly distributed with a plurality of upper column holes along the circumferential direction, each upper column hole is respectively arranged corresponding to a lower column hole, and each elastic support column is respectively arranged in an upper column hole and a corresponding lower column hole.

[0007] Furthermore, the upper part of the lower column hole is a lower mounting hole, the lower part of the lower column hole is a lower positioning hole, the aperture of the lower positioning hole is smaller than the aperture of the lower mounting hole, the lower part of the upper column hole is an upper mounting hole, the upper part of the upper column hole is an upper positioning hole, the aperture of the upper positioning hole is smaller than the aperture of the upper mounting hole, the lower part of the elastic support column is arranged in the lower mounting hole, and the upper part of the elastic support column is arranged in the upper mounting hole.

[0008] Furthermore, the length of the elastic support column is smaller than the distance between the bottom of the lower mounting hole and the bottom of the upper mounting hole when the arc seat and the flat seat are horizontal.

[0009] Furthermore, the upper end surface of the arc seat is evenly distributed with multiple lower rivet holes along the circumferential direction, and the lower end surface of the flat seat is evenly distributed with multiple upper rivet holes along the circumferential direction, each upper rivet hole is respectively arranged corresponding to a lower rivet hole, and each rivet is respectively arranged in an upper rivet hole and the corresponding lower rivet hole.

[0010] Further, the upper part of the lower rivet hole is a lower rivet head hole, the lower part of the lower rivet hole is a lower rivet column hole, the aperture of the lower rivet column hole is smaller than the aperture of the lower rivet head hole, the lower part of the upper rivet hole is an upper rivet column hole, the upper part of the upper rivet hole is an upper rivet head hole, the aperture of the upper rivet column hole is smaller than the aperture of the upper rivet head hole, the lower rivet head of the rivet is arranged in the lower rivet head hole, the lower rivet column of the rivet is arranged in the lower rivet column hole, the upper rivet head of the rivet is arranged in the upper rivet head hole, and the upper rivet column of the rivet is arranged in the upper rivet column hole.

[0011] Furthermore, the distance between the rivet heads at both ends of the rivet is greater than the distance between the bottom of the upper rivet head hole and the bottom of the lower rivet head hole when the arc seat and the flat seat are horizontal.

[0012] Furthermore, the elastic support is an elastic rubber strip.

[0013] Furthermore, the supporting balls are steel balls or ceramic balls.

[0014] Furthermore, a plurality of lower external threaded holes are evenly distributed on the lower end surface of the arc seat along the circumferential direction, and a plurality of upper external threaded holes are evenly distributed on the upper end surface of the flat seat along the circumferential direction.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention adopts floating parts such as steel balls and rivets, so that the supporting mechanism only transmits positive pressure.

[0017] Second, the present invention adopts elastic rubber strips to enable the supporting mechanism to have reset capability.

[0018] 3. Compact structure, high integration and integration, all parts are assembled together. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the overall structure of the present invention;

[0020] Figure 2 yes Figure 1 AA section view in the figure;

[0021] Figure 3 It is an axonometric diagram of the overall structure of the present invention. DETAILED DESCRIPTION

[0022] Specific implementation method 1: Combination Figures 1 to 3The present embodiment is described. A floating fulcrum device for center of mass measurement described in the present embodiment includes an arc seat 1, a flat seat 2, a support ball 4, a plurality of elastic support columns 3 and a plurality of rivets 5. The arc seat 1 is arranged directly below the flat seat 2. An arc groove 1-1 is provided in the middle of the upper end surface of the arc seat 1. A cylindrical groove 2-1 is provided in the middle of the lower end surface of the flat seat 2. A support ball 4 is provided between the arc groove 1-1 and the cylindrical groove 2-1. The outer diameter of the support ball 4 is larger than the sum of the maximum groove depth of the arc groove 1-1 and the groove depth of the cylindrical groove 2-1. A plurality of elastic support columns 3 are evenly distributed and floatingly arranged between the arc seat 1 and the flat seat 2 in the circumferential direction. A plurality of rivets 5 are evenly distributed and floatingly arranged between the arc seat 1 and the flat seat 2 in the circumferential direction.

[0023] In this embodiment, the arc seat 1 and the flat seat 2 are coaxially arranged.

[0024] The arc seat 1 and the flat seat 2 have an arc groove 1 - 1 and a cylindrical groove 2 - 1 , which can accommodate a support ball 4 . The support ball 4 is subjected to and only subjected to normal positive pressure from the arc seat 1 and the flat seat 2 .

[0025] The arc seat 1 and the flat seat 2 are connected by elastic support columns 3 and rivets 5, but there is a gap in the connection, so that the support ball 4, the arc seat 1 and the flat seat 2 can swing slightly.

[0026] There are holes of the same phase between the arc seat 1 and the flat seat 2 for placing elastic support columns 3 and rivets 5, and a support ball 4 is placed in the middle. The rivet 5 connects the arc seat 1 and the flat seat 2 to prevent the support ball 4 from falling off.

[0027] Specific implementation method 2: Combination Figures 1 to 3 To explain this embodiment, the upper end surface of the arc seat 1 in this embodiment is evenly provided with a plurality of lower column holes 1-2 along the circumferential direction, and the lower end surface of the flat seat 2 is evenly provided with a plurality of upper column holes 2-2 along the circumferential direction, each upper column hole 2-2 is respectively provided corresponding to a lower column hole 1-2, and each elastic support column 3 is respectively provided in an upper column hole 2-2 and a corresponding lower column hole 1-2. Other components and connection methods are the same as those of the first embodiment.

[0028] Specific implementation method three: Combination Figures 1 to 3 To explain this embodiment, the upper part of the lower column hole 1-2 described in this embodiment is the lower mounting hole, the lower part of the lower column hole 1-2 is the lower positioning hole, the aperture of the lower positioning hole is smaller than the aperture of the lower mounting hole, the lower part of the upper column hole 2-2 is the upper mounting hole, the upper part of the upper column hole 2-2 is the upper positioning hole, the aperture of the upper positioning hole is smaller than the aperture of the upper mounting hole, the lower part of the elastic support column 3 is arranged in the lower mounting hole, and the upper part of the elastic support column 3 is arranged in the upper mounting hole. Other components and connection methods are the same as those of the second embodiment.

[0029] Specific implementation method four: Combination Figures 1 to 3To illustrate this embodiment, the length of the elastic support column 3 in this embodiment is less than the distance between the bottom of the lower mounting hole and the bottom of the upper mounting hole when the arc seat 1 and the flat seat 2 are horizontal. Other components and connection methods are the same as those in the third embodiment.

[0030] Specific implementation method five: Combination Figures 1 to 3 To explain this embodiment, the upper end surface of the arc seat 1 in this embodiment is evenly provided with a plurality of lower rivet holes 1-3 along the circumferential direction, and the lower end surface of the flat seat 2 is evenly provided with a plurality of upper rivet holes 2-3 along the circumferential direction, each upper rivet hole 2-3 is respectively provided corresponding to a lower rivet hole 1-3, and each rivet 5 is respectively provided in an upper rivet hole 2-3 and a corresponding lower rivet hole 1-3. Other components and connection methods are the same as those of the first, second, third or fourth embodiments.

[0031] Specific implementation method six: Combination Figures 1 to 3 To explain this embodiment, the upper part of the lower rivet hole 1-3 described in this embodiment is the lower rivet head hole, the lower part of the lower rivet hole 1-3 is the lower rivet column hole, the aperture of the lower rivet column hole is smaller than the aperture of the lower rivet head hole, the lower part of the upper rivet hole 2-3 is the upper rivet column hole, the upper part of the upper rivet hole 2-3 is the upper rivet head hole, the aperture of the upper rivet column hole is smaller than the aperture of the upper rivet head hole, the lower rivet head of the rivet 5 is arranged in the lower rivet column hole, the upper rivet head of the rivet 5 is arranged in the upper rivet head hole, and the upper rivet column of the rivet 5 is arranged in the upper rivet column hole. Other components and connection methods are the same as those of the specific embodiment 5.

[0032] Specific implementation method seven: Combination Figures 1 to 3 To illustrate this embodiment, the distance between the rivet heads at both ends of the rivet 5 in this embodiment is greater than the distance between the bottom of the upper rivet head hole and the bottom of the lower rivet head hole when the arc seat 1 and the flat seat 2 are horizontal. Other components and connection methods are the same as those of the sixth embodiment.

[0033] The arc seat 1 and the flat seat 2 are floatingly connected by rivets 5. There is a gap between the rivets 5 and the arc seat 1 and the flat seat 2, but the gap is small and the supporting ball 4 cannot fall off from the groove between the arc seat 1 and the flat seat 2.

[0034] Specific implementation method eight: Combination Figures 1 to 3 To explain this embodiment, the elastic support 3 in this embodiment is an elastic rubber strip. Other components and connection methods are the same as those in the first embodiment.

[0035] Specific implementation method nine: Combination Figures 1 to 3 To explain this embodiment, the support ball 4 in this embodiment is a steel ball or a ceramic ball. Other components and connection methods are the same as those in the first embodiment.

[0036] Specific implementation method ten: Combination Figures 1 to 3To explain this embodiment, the lower end surface of the arc seat 1 in this embodiment is evenly distributed along the circumferential direction with a plurality of lower external threaded holes 1-4, and the upper end surface of the flat seat 2 is evenly distributed along the circumferential direction with a plurality of upper external threaded holes 2-4. Other components and connection methods are the same as those of the first embodiment.

[0037] The lower external threaded holes 1-4 and the upper external threaded holes 2-4 serve as external interfaces and can be connected to force sensors or other parts.

[0038] The number of the lower external threaded holes 1-4 and the number of the upper external threaded holes 2-4 are both three.

[0039] The number of the elastic support columns 3 and the number of the rivets 5 are both three.

[0040] An elastic support column 3 and a rivet 5 are respectively provided between each two adjacent lower external threaded holes 1-4 or upper external threaded holes 2-4, that is, the elastic support column 3, the rivet 5 and the lower external threaded holes 1-4 (or upper external threaded holes 2-4) are evenly and alternately arranged.

[0041] How it works

[0042] A floating fulcrum device for centroid measurement includes an arc seat 1, a flat seat 2, an elastic support 3, a support ball 4, and a rivet 5. There are holes of the same phase between the arc seat 1 and the flat seat 2, which are used to place three elastic supports 3 and rivets 5. The support ball 4 is placed in the middle, and the rivet 5 connects the arc seat 1 and the flat seat 2 to prevent the support ball 4 from falling off. Due to the geometric characteristics of the support ball 4, only positive pressure is transmitted between the arc seat 1, the flat seat 2 and the support ball 4, and no horizontal force component and torque are transmitted. The floating elastic support 3 has a reset capability, and the rivet 5 connects the arc seat 1 and the flat seat 2, so that the support ball 4 will not fall off during use and transportation.

[0043] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A floating fulcrum device for centroid measurement, characterized in that: The invention comprises an arc seat (1), a flat seat (2), a support ball (4), a plurality of elastic support columns (3) and a plurality of rivets (5). The arc seat (1) is arranged directly below the flat seat (2). An arc groove (1-1) is arranged in the middle of the upper end surface of the arc seat (1). A cylindrical groove (2-1) is arranged in the middle of the lower end surface of the flat seat (2). A support ball (4) is arranged between the arc groove (1-1) and the cylindrical groove (2-1). The outer diameter of the support ball (4) is greater than the sum of the maximum groove depth of the arc groove (1-1) and the groove depth of the cylindrical groove (2-1). A plurality of elastic support columns (3) are evenly distributed and floatingly arranged between the arc seat (1) and the flat seat (2) in the circumferential direction. A plurality of rivets (5) are evenly distributed and floatingly arranged between the arc seat (1) and the flat seat (2) in the circumferential direction. The support ball (4) is subjected to and is only subjected to normal positive pressure from the arc seat (1) and the flat seat (2).

2. A floating fulcrum device for centroid measurement according to claim 1, characterized in that: The upper end surface of the arc seat (1) is evenly provided with a plurality of lower column holes (1-2) along the circumferential direction, the lower end surface of the flat seat (2) is evenly provided with a plurality of upper column holes (2-2) along the circumferential direction, each upper column hole (2-2) is respectively arranged corresponding to a lower column hole (1-2), and each elastic support column (3) is respectively arranged in an upper column hole (2-2) and a corresponding lower column hole (1-2).

3. A floating fulcrum device for centroid measurement according to claim 2, characterized in that: The upper part of the lower column hole (1-2) is a lower mounting hole, the lower part of the lower column hole (1-2) is a lower positioning hole, the aperture of the lower positioning hole is smaller than the aperture of the lower mounting hole, the lower part of the upper column hole (2-2) is an upper mounting hole, the upper part of the upper column hole (2-2) is an upper positioning hole, the aperture of the upper positioning hole is smaller than the aperture of the upper mounting hole, the lower part of the elastic support column (3) is arranged in the lower mounting hole, and the upper part of the elastic support column (3) is arranged in the upper mounting hole.

4. A floating fulcrum device for centroid measurement according to claim 3, characterized in that: The length of the elastic support column (3) is smaller than the distance between the bottom of the lower mounting hole and the bottom of the upper mounting hole when the arc seat (1) and the flat seat (2) are horizontal.

5. A floating fulcrum device for centroid measurement according to claim 1, 2, 3 or 4, characterized in that: The upper end surface of the arc seat (1) is evenly provided with a plurality of lower rivet holes (1-3) along the circumferential direction, and the lower end surface of the flat seat (2) is evenly provided with a plurality of upper rivet holes (2-3) along the circumferential direction, each upper rivet hole (2-3) is respectively arranged corresponding to a lower rivet hole (1-3), and each rivet (5) is respectively arranged in an upper rivet hole (2-3) and a corresponding lower rivet hole (1-3).

6. A floating fulcrum device for centroid measurement according to claim 5, characterized in that: The upper part of the lower rivet hole (1-3) is a lower rivet head hole, the lower part of the lower rivet hole (1-3) is a lower rivet column hole, the aperture of the lower rivet column hole is smaller than the aperture of the lower rivet head hole, the lower part of the upper rivet hole (2-3) is an upper rivet column hole, the upper part of the upper rivet hole (2-3) is an upper rivet head hole, the aperture of the upper rivet column hole is smaller than the aperture of the upper rivet head hole, the lower rivet head of the rivet (5) is arranged in the lower rivet head hole, the lower rivet column of the rivet (5) is arranged in the lower rivet column hole, the upper rivet head of the rivet (5) is arranged in the upper rivet head hole, and the upper rivet column of the rivet (5) is arranged in the upper rivet column hole.

7. A floating fulcrum device for centroid measurement according to claim 6, characterized in that: The distance between the rivet heads at both ends of the rivet (5) is greater than the distance between the bottom of the upper rivet head hole and the bottom of the lower rivet head hole when the arc seat (1) and the flat seat (2) are horizontal.

8. The floating fulcrum device for centroid measurement according to claim 1, characterized in that: The elastic support (3) is an elastic rubber strip.

9. The floating fulcrum device for centroid measurement according to claim 1, characterized in that: The supporting ball (4) is a steel ball or a ceramic ball.

10. The floating fulcrum device for centroid measurement according to claim 1, characterized in that: The lower end surface of the arc seat (1) is evenly distributed along the circumferential direction with a plurality of lower external threaded holes (1-4), and the upper end surface of the flat seat (2) is evenly distributed along the circumferential direction with a plurality of upper external threaded holes (2-4).

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