Double-wheel mass-superimposed inerter

Abstract

The present application relates to a kind of double-wheel mass synergistic inertial containers, comprising: base, the base has the first support column with the horizontal groove of middle part zone;Along the reciprocating movement of the groove of first support column, translational bar;With the rotation connection of the base, the special-shaped cam, the surface of special-shaped cam is also provided with second sliding slot, movable shaft is arranged in second sliding slot and reciprocatingly moves along it;Swing bar is hinged to one end of translational bar, and the other end is hinged to movable shaft, the side surface of swing bar is also provided with the first sliding slot along its axial direction;Cam is installed above the base and can be rotated, and convex knob is installed in the edge of cam and enters first sliding slot.Compared with prior art, the present application can realize better mass strong synergistic effect, easy to implement, and can be used for special structure space.

Description

Technical Field

[0001] This invention relates to the field of vibration control technology, and in particular to a dual-wheel mass-enhanced inertial container. Background Technology

[0002] Currently, various mechanisms exist to simulate the mechanical behavior of inertial capacitance, such as ball screw-type inertial capacitance, rack and pinion inertial capacitance, tuned liquid-type inertial capacitance, and particle-damped inertial capacitance systems based on roller designs. Among these, the devices utilizing the conversion of translational to rotational motion are mainly ball screw-type and rack and pinion inertial capacitance, and most existing patents related to inertial capacitance and inertial capacitance systems adopt this form. Although ball screw-type inertial capacitance can achieve superior mass efficiency, its mechanical structure is complex, requires high machining precision, and has high manufacturing costs. Rack and pinion inertial capacitance mainly achieves motion conversion through the meshing between gears and racks; this structural form has a weaker amplification effect on the inertial capacitance coefficient.

[0003] Patent publication number CN102506122A discloses a gear and rack type inertia container device with a variable inertia coefficient. A guide groove is cut into the cam of the inertia container, and a mass block that can move freely radially within the guide groove is nested there. A magnetic collar is placed at the center of the cam shaft, which can attract the mass block near the cam shaft when stationary. When an external force is applied to the two ends of the inertia container, the rack indirectly drives the cam fixed to the housing to rotate, and the centrifugal force causes the mass block to move radially, thus changing the inertia coefficient with the motion state. However, this device has a complex structure and a relatively weak amplification effect on the inertia coefficient. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art by providing a dual-wheel mass-enhancing inertial container that can achieve strong mass enhancement, adjustable inertial capacity coefficient, and simple mechanical form, making it easy to implement.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A dual-wheel mass-enhancing inertial container, characterized in that it comprises:

[0007] A base having a first support column with a horizontally spaced groove in the middle;

[0008] A translational rod that moves back and forth along the groove of the first support column;

[0009] The irregularly shaped cam is rotatably connected to the base, and the surface of the irregularly shaped cam is also provided with a second sliding groove, in which a movable shaft that reciprocates is provided;

[0010] A swing rod with one end hinged to the translation rod and the other end hinged to the movable shaft, the side surface of the swing rod is also provided with a first sliding groove along its axial direction;

[0011] A rotatable cam mounted above the base has a protrusion on its edge that extends into the first sliding slot.

[0012] Furthermore, the groove is coated with lubricating oil or other methods that can reduce the friction between the groove and the translation rod.

[0013] Furthermore, the groove is made of a material with low friction, such as a high-molecular polymer friction-reducing material, including polytetrafluoroethylene, silicone rubber, etc.

[0014] Furthermore, the first support column is perpendicular to the base.

[0015] Furthermore, the base is also provided with a second support column, and the second support column has a buffer block on the side near the translation rod that buffers the translation rod.

[0016] Furthermore, the buffer block is a polystyrene foam buffer pad or a rubber pad.

[0017] Furthermore, the second support column is parallel to the first support column.

[0018] Furthermore, the translation rod and the swing shaft are hinged by a rotation shaft arranged longitudinally.

[0019] Furthermore, the base and the irregularly shaped cam are hinged by a fixed central shaft arranged longitudinally.

[0020] Furthermore, when the irregularly shaped cam is not rotating, the movable shaft is located in the middle position of the second sliding slot; when the irregularly shaped cam rotates towards the side closer to the swing arm, the movable shaft is located above the second sliding slot; when the irregularly shaped cam rotates away from the swing arm, the movable shaft is located below the second sliding slot.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] (1) This invention achieves a significant increase in mass efficiency through a simple mechanical transmission method. The device of this invention connects and fixes the two cams to the structure via connecting rods and rotating shafts. When the translation rod moves, the device drives the rotation of each cam through rotating shafts at different positions and a fixed rotating shaft, thereby achieving a significant increase in mass efficiency of the inertial capacity system. Therefore, this invention achieves a significant increase in mass efficiency while maintaining a simple mechanical form, being easy to implement, and enabling adjustable inertial capacity coefficients.

[0023] (2) This invention utilizes a mechanical transmission form from translation to rotation in the field of mechanics. The same mechanical motion process drives two types of cam transmission, which can achieve high efficiency and can be used in special structural spaces.

[0024] (3) The mechanical transmission structure of the present invention is simple, the processing requirements of each component are low, and the installation is convenient.

[0025] (4) The cam and each component rod of the device of the present invention are connected by a shaft, which makes it stable and strong. Attached Figure Description

[0026] Figure 1 The dual-wheel mass-enhanced inertial container shown in Example 1 is used when the irregularly shaped cam does not rotate.

[0027] Figure 2 This is the dual-wheel mass-enhanced inertial container shown in Example 1 when the movable shaft is located at the top of the second sliding slot;

[0028] Figure 3 The dual-wheel mass-enhanced inertial container shown in Example 1 is located at the lowest position of the second sliding slot.

[0029] 1-Base, 101-First support column, 102-Second support column, 2-Buffer block, 3-Translation rod, 301-Rotation shaft, 4-Swing rod, 401-First sliding slot, 5-Cam, 501-Central shaft, 502-Pan knob, 6-Irregular cam, 601-Fixed central shaft, 602-Movable shaft, 603-Second sliding slot. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. All other embodiments obtained by those skilled in the art based on the given embodiments without creative effort are within the scope of protection of this application.

[0031] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "horizontal", "longitudinal", "edge", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Unless otherwise specified, the functional components or structures in the following embodiments or examples are conventional components or structures used in the art to achieve the corresponding functions.

[0033] Example 1

[0034] This embodiment provides a dual-wheel mass-enhanced inertial container, such as... Figure 1 As shown, it includes:

[0035] Base 1, the base having a first support column 101 with a horizontal groove in the middle;

[0036] A translation rod 3 that moves back and forth in the groove of the first support column 101;

[0037] The irregularly shaped cam 6 is rotatably connected to the base 1. The surface of the irregularly shaped cam 6 is also provided with a second sliding groove 603. A movable shaft 602 that reciprocates along the second sliding groove 603 is provided in the second sliding groove 603.

[0038] A swing rod 4, with one end hinged to the translation rod 3 and the other end hinged to the movable shaft 602, has a first sliding groove 401 along its axial direction on its side surface.

[0039] A rotatable cam 5 is mounted above the base 1, and a protruding button 502 extending into the first sliding slot 401 is installed on the edge of the cam 5.

[0040] In this embodiment, the groove is coated with lubricating oil.

[0041] In this embodiment, the material of the groove is silicone rubber, a high-molecular polymer that reduces friction.

[0042] In this embodiment, the first support column 101 is perpendicular to the base 1.

[0043] In this embodiment, the base 1 is also provided with a second support column 102, and the second support column 102 has a buffer block 102 on the side near the translation rod 3 to buffer the translation rod 3.

[0044] In this embodiment, the buffer block 2 is a rubber pad.

[0045] In this embodiment, the second support column 102 is parallel to the first support column 101.

[0046] In this embodiment, the translation rod 3 and the swing shaft 4 are hinged by a rotation shaft 301 arranged longitudinally.

[0047] In this embodiment, the base 1 and the irregular cam 6 are hinged by a fixed central shaft 601 arranged longitudinally.

[0048] In this embodiment, when the irregular cam 6 does not rotate, the movable shaft 602 is located in the middle position of the second sliding slot 603; when the irregular cam 6 rotates towards the side closer to the swing rod 4, the movable shaft 602 is located above the second sliding slot 603; when the irregular cam 6 rotates away from the swing rod 4, the movable shaft 602 is located below the second sliding slot 603.

[0049] In this embodiment, the working process of the dual-wheel mass-enhancing inertial container is as follows: When the translation rod 3 moves horizontally towards the cam 5, it drives the swing rod 4 to move away from the base 1 and towards the translation rod 3. The cam 5 rotates around the central axis 501 in the same direction as the swing rod 4 via the convex button 502. The irregular cam 6 rotates around the fixed central axis 601 in the direction close to the cam 5. Through the second sliding slot 603 and the movable shaft 602, it further drives the swing rod 4 to rotate in the same direction as the irregular flywheel 6. That is, the translation rod 3 translates in the groove of the base 1, driving the rotation of the swing rod 4 in the dual-wheel mass-enhancing inertial container, thereby realizing the rotation of the cam 5 and the irregular cam 6, producing a mass-enhancing effect. The rotating rod 4 performs coupled rotational motion according to the axial connection with the translation rod 3 and the irregular cam 6. During operation, the motion trajectory of the swing rod 4 is determined by the rotation control of the cam 5 and the irregular cam 6, and the rotation amplitude is determined by the size of the groove 603, which is between 0 and 40°.

[0050] The output force of the inertial container is proportional to the relative acceleration between its two endpoints, and the ratio is the inertial capacity coefficient. The derivation process of the inertial capacity coefficient of the inertial container is as follows:

[0051] Assuming the horizontal displacement of the translation rod 3 is u1, the angle between the axis of the swing rod 4 and the horizontal line is α, and the angle between the axis of the irregular cam 6 and the horizontal line is β, as follows: Figure 2 As shown. The length of the swing arm 4 is L, the mass of the cam 5 is m, the radius is r, and the angular velocity is ω1, the mass of the irregular cam 6 is M, the imaginary radius is R (i.e., the distance between the fixed central axis 602 and the movable axis 601 is considered to be R), and the angular velocity is ω′, and the instantaneous displacement of the fixed central axis 602 is u2. Wherein, α∈(0°, 40°), β∈(80°, 100°).

[0052] The rotational inertia of the cam 5 The moment of inertia of the irregular cam 6 is approximated by the formula.

[0053] Depend on Figures 1-3As can be seen from the limiting state of the device, the displacement u1 of the translation rod 3 during the movement of the mechanism is very small. If u1 is 0, the rotating rod 4 will rotate around the fixed axis 301; while when u1 is extremely small, it can be assumed that the rotating rod 4 rotates around a point on the rotating rod 4 during the movement, and the distance from the fixed point to the end of the fixed axis 301 is infinitesimal, denoted by Δ.

[0054] From geometric relationships, we know that:

[0055]

[0056]

[0057] The kinetic energy of the cam 5 system is:

[0058] Substituting (1), (2), and (3) into (4) yields:

[0059] F in The work done is: W = F in u1; (6)

[0060] In the operation of the inertial container, friction is neglected, F in If the work done is completely converted into the kinetic energy of the cam 5 system, then the following relationship holds:

[0061] Substituting formula (5) into (7) and simplifying, we get:

[0062] According to the definition of the inertia coefficient, the expression for the inertia coefficient of the inertia container is:

[0063]

[0064] As shown in equation (9), the inertia coefficient of the inertia container is adjustable by changing the values ​​of α and β; and the range of α is determined by the second sliding slot 603, and the value of sinα can be prevented from approaching 0 by controlling the size of the second sliding slot 603. Therefore, according to the mathematical limit theorem, the inertia coefficient can approach infinity, thereby achieving a significant increase in mass efficiency.

[0065] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A dual-wheel mass-enhancing inertial container, characterized in that, include: Base (1), the base having a first support column (101) with a horizontal groove in the middle; A translation rod (3) that moves back and forth in the groove of the first support column (101); The irregular cam (6) is rotatably connected to the base (1). The surface of the irregular cam (6) is also provided with a second sliding groove (603). A movable shaft (602) that reciprocates along the second sliding groove (603) is provided in the second sliding groove (603). A swing rod (4) with one end hinged to the translation rod (3) and the other end hinged to the movable shaft (602) is provided with a first sliding groove (401) along its axial direction on the side surface of the swing rod (4). A rotatable cam (5) is mounted above the base (1), and a protruding button (502) extending into the first sliding slot (401) is mounted on the edge of the cam (5). When the irregular cam (6) does not rotate, the movable shaft (602) is located in the middle position of the second sliding slot (603); When the irregular cam (6) rotates toward the side closer to the swing arm (4), the movable shaft (602) is located above the second sliding slot (603); when the irregular cam (6) rotates away from the swing arm (4), the movable shaft (602) is located below the second sliding slot (603).

2. The dual-wheel mass-enhancing inertial container according to claim 1, characterized in that, The groove is coated with lubricating oil.

3. The dual-wheel mass-enhancing inertial container according to claim 1, characterized in that, The first support column (101) is perpendicular to the base (1).

4. The dual-wheel mass-enhancing inertial container according to claim 1, characterized in that, The base (1) is also provided with a second support column (102), and the second support column (102) has a buffer block (2) on the side near the translation rod (3) to buffer the translation rod (3).

5. The dual-wheel mass-enhancing inertial container according to claim 4, characterized in that, The buffer block is a polystyrene foam buffer pad or a rubber pad.

6. The dual-wheel mass-enhancing inertial container according to claim 4, characterized in that, The second support column (102) is parallel to the first support column (101).

7. The dual-wheel mass-enhancing inertial container according to claim 1, characterized in that, The translation rod (3) and the swing rod (4) are hinged by a rotating shaft (301) arranged longitudinally.

8. The dual-wheel mass-enhancing inertial container according to claim 1, characterized in that, The base (1) and the irregular cam (6) are hinged by a fixed central shaft (601) arranged longitudinally.

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