A periodically excited ring oscillating motion mechanism

Abstract

The present invention belongs to the field of ring vibration motion demonstration mechanism, and relates to a periodically excited ring vibration motion mechanism, including a circular ring, wherein a counterweight moving rod with its center of gravity located at the center of the circular ring is arranged inside the circular ring; a movable counterweight block for adjusting the center of gravity is arranged on the counterweight moving rod, and the movable counterweight block is movably arranged along the arrangement direction of the counterweight moving rod. The present invention has the characteristics of simple and compact structure, periodic control, low power, low energy consumption, low cost, etc.; the motion state is changed by using the change of the center of gravity of the mechanism itself, and the ring vibration in the natural state can be maintained for a longer time or continuously without applying external force.

Description

Technical Field

[0001] The invention belongs to the field of ring oscillation motion demonstration mechanisms and relates to a periodically excited ring oscillation motion mechanism. Background Art

[0002] As people's living standards improve, entertainment activities become more diverse, and the art of spinning large rings is increasingly popular with the audience. The spinning large rings are acrobatic performances in which acrobats cling to a large ring and use the change in their own center of gravity to make the large ring tilt and rotate on the ground. Due to the friction of the ground and the air resistance, the ring's rotation on the ground will continue to decay and even stop, so the performer needs to constantly apply force to the ring in order to continue to rotate the large ring. Moreover, this type of performance has high requirements for the performers, and performing for a long time will also cause physical exhaustion for the performers.

[0003] The physical model of the ring performance is ring vibration motion, which is the rotation of a circle around its own central axis at a certain angle to the ground and the conical motion of the central axis around a vertical axis perpendicular to the ground and passing through the center point of the ring. The current device cannot realize the long-term rotation of a large ring on the ground, and it is impossible to demonstrate and observe ring vibration motion for a long time. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a periodically excited ring oscillation motion mechanism, which excites the ring to maintain a ring oscillation state by controlling the counterweight block inside the ring to change the overall center of gravity within one cycle or multiple cycles.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A periodically excited ring oscillation motion mechanism comprises a circular ring, wherein a counterweight moving rod with its center of gravity located at the center of the circular ring is arranged inside the circular ring; a movable counterweight block for adjusting the center of gravity is arranged on the counterweight moving rod, and the movable counterweight block is movably arranged along the arrangement direction of the counterweight moving rod.

[0007] Optionally, it also includes a driving device for driving the movable counterweight to move, and the driving device is arranged on the ring.

[0008] Optionally, a balancing weight block symmetrically arranged with respect to the driving device is provided on the circular ring so as to evenly distribute the center of gravity of the entire ring-oscillation motion mechanism on the circular ring.

[0009] Optionally, the counterweight moving rod is in a straight line shape, and the driving device and the balancing counterweight block are arranged at both ends of the counterweight rod.

[0010] Optionally, the counterweight moving rod is in a circular ring shape, and the driving device and the balancing counterweight block are symmetrically arranged on the counterweight moving rod; two movable counterweight blocks are symmetrically arranged and set between the driving device and the balancing counterweight block.

[0011] Optionally, the circular ring is in the form of a hollow ring tube, and the counterweight moving rod is arranged on an annular guide rail inside the circular ring.

[0012] Optionally, the driving device is a driving winder for winding, tightening or releasing a flexible line, one side of the movable counterweight block is connected to the flexible line, and the position of the movable counterweight block on the counterweight moving rod is adjusted by winding, tightening or releasing the flexible line.

[0013] Optionally, a side of the movable counterweight away from the flexible line is connected to the balancing counterweight via an elastic unit.

[0014] Optionally, the elastic unit is a spring.

[0015] Optionally, the balancing weight and the driving device are arranged outside the circular ring and on the same side.

[0016] The beneficial effects of the present invention are:

[0017] The present invention adopts a ring structure with the characteristics of simple and compact structure, periodic control, low power, low energy consumption, low cost, etc.; the change of the internal center of gravity of the mechanism itself is used to change the motion state, and the ring oscillation in the natural state can be maintained for a longer time or continuously without applying external force. This ring oscillation motion mechanism is highly innovative and contains rich control theory knowledge. It has a wide range of applications and can be used in the fields of robot science and technology performances, robot education, toys, etc.

[0018] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 Schematic diagram of ring vibration motion;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3Schematic diagram of the position of the present invention rolling on the ground, with the contact point being A;

[0023] Figure 4-Figure 7 It is a schematic diagram of the continuous state of the present invention rolling on the ground;

[0024] Figure 4 The contact point between the present invention and the ground is A;

[0025] Figure 5 The contact point between the present invention and the ground is B;

[0026] Figure 6 The contact point between the present invention and the ground is C;

[0027] Figure 7 The contact point between the present invention and the ground is D;

[0028] Figure 8 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0029] Fig. 9 for Figure 8 Schematic diagram from another perspective;

[0030] Fig.10 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0031] Fig.11 for Fig.10 Schematic diagram from another perspective. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0033] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] See also Figure 1-Figure 11 The component numbers in the accompanying drawings represent: a ring 1, a driving device 2, a movable counterweight block 3, a counterweight moving rod 4, a balancing counterweight block 5, an elastic unit 6, and a flexible line 7.

[0036] The present invention discloses a periodically excited ring oscillating motion mechanism. The ring oscillating motion mechanism is composed of a ring 1, a driving device 2, a movable counterweight block 3, a counterweight moving rod 4, a balancing counterweight block 5, etc. The overall structural diagram is shown in FIG. Figure 2 As shown. The driving device 2 and the balancing weight 5 are symmetrically fixed on the ring 1, so that the center of gravity of the whole is evenly distributed on the ring when it is stationary. The counterweight moving rod 4 has the function of limiting the movement trajectory of the movable counterweight 3. The movable counterweight 3 is controlled to move on the counterweight moving rod 4 by the driving device 2, so as to change the center of gravity of the ring 1 during movement and realize periodic excitation.

[0037] The present invention is a periodically excited ring oscillating motion mechanism, which realizes motion by the change of its center of gravity. The time interval between two contacts between a certain point on the ring and the ground is called a cycle. Figure 3 As shown, during the ring vibration process, the time from when point A contacts the flat ground at a certain moment to the next time point A contacts the flat ground is a ring vibration cycle. During the ring vibration process, the center of gravity change can be stimulated once within N (N=1, 2, 3...) cycles to maintain the ring vibration motion.

[0038] Let us take the case of N = 1 as an example to explain the method of excitation once per cycle and the motion process of the ring oscillation within one cycle. Figure 4 In the state shown, point A touches the ground, and the rotation direction of the ring vibration mechanism is along Figure 4The direction indicated by the arrow is the clockwise direction for ring vibration. In one cycle, points A, B, C, and D are separated by a quarter of a cycle. In the process from point A to point B, the driving device 2 controls the movable counterweight block 3 to move closer to point B. The excitation of the movable counterweight block 3 causes the center of gravity of the whole to move along the rotation direction of the ring, thereby increasing the potential energy of the ring vibration to maintain the ring vibration state. When point B touches the ground, the movable counterweight block 3 moves closer to point B. Figure 5 At this time, the ring vibration continues, and the driving device 2 controls the movable counterweight block 3 to move toward the center point of the ring 1. The center of gravity of the whole body continues along the ring vibration direction. When point C touches the ground, the movable counterweight block 3 moves to the center point of the ring 1, as shown in FIG. Figure 6 Continue the ring oscillation motion. In the quarter cycle from C to D, since the movable counterweight block 3 is already at the center of the whole, there is no need to move the movable counterweight block 3. At this time, point D touches the ground, as shown in FIG. Figure 7 As shown. The ring vibration mechanism continues to move, and the position of the movable counterweight block 3 remains unchanged until point A touches the ground again, and the ring vibration completes a cycle of motion. This cycle repeats and the ring vibration motion is maintained.

[0039] Embodiment 1

[0040] This example is a ring vibration motion mechanism with a counterweight excited in the diameter direction of a ring 1. The structure is as follows Figure 8 , Fig. 9 As shown. The structure consists of a circular ring 1, a driving winder (driving device 2), a flexible wire 7, a movable counterweight 3, an auxiliary guide rail (counterweight moving rod 4), an elastic unit 6, a balancing counterweight 5, etc. The driving winder and the balancing counterweight 5 are symmetrically installed on the circular ring 1. In a balanced state, the uneven distribution of the center of gravity of the entire mechanism when only the driving winder is present is avoided. When the driving winder is winding, the flexible wire 7 pulls the movable counterweight 3 to slide along the auxiliary guide rail, and will not shake left and right to affect the maintenance of the ring vibration. When the driving winder is reset, due to the action of the elastic unit 6, the movable counterweight 3 is also reset along the auxiliary guide rail. The ring vibration motion is periodic, and correspondingly, the excitation of the movable counterweight 3 is also periodic.

[0041] When the ring vibration mechanism is ring vibrating on the ground, when the driving winder is about to approach the ground, the driving winder winds the flexible wire 7 and pulls the movable counterweight 3 on the auxiliary guide rail to move close to the driving winder, so that the kinetic energy generated by the movable counterweight 3 is consistent with the ring vibration direction, generating a positive excitation effect, thereby compensating for the ring vibration motion attenuation. At this time, the elastic unit 6 is in a stretched state, so as to reset the counterweight next; when the ring vibration reaches the driving winder leaving the ground, the driving winder releases the flexible wire 7, and under the action of the elastic unit 6, the movable counterweight 3 is reset to the center of the ring 1. Such periodic excitation of the counterweight can always maintain the ring vibration state.

[0042] Embodiment 2

[0043] This example is a ring vibration motion mechanism with an excitation counterweight on the ring. Fig.10 , Fig.11 As shown. The structure consists of a circular ring 1, a driving winder (driving device 2), two flexible wires 7, an annular guide rail (counterweight moving rod 4), two movable counterweights 3, two elastic units 6, a balancing counterweight 5, etc. The driving winder and the balancing counterweight 5 are symmetrically mounted on the circular ring 1. In a balanced state, the uneven distribution of the center of gravity of the entire mechanism when only the driving winder is used is avoided. The annular guide rail can limit the movement of the flexible wire 7, the movable counterweight 3, and the elastic unit 6 along the guide rail. When the driving winder is winding, the two flexible wires 7 respectively pull the two movable counterweights 3 to slide along the annular guide rail. When the driving winder is reset, due to the action of the two elastic units 6, the movable counterweight 3 is also reset along the annular guide rail (counterweight moving rod 4). The ring vibration motion is periodic, and correspondingly, the excitation of the movable counterweight 3 is also periodic.

[0044] When the ring vibration mechanism is in ring vibration motion on the ground, the two movable counterweights 3 are pulled periodically when the assembly drive winder is about to approach the ground. The kinetic energy generated by the movable counterweights 3 is consistent with the ring vibration direction, generating a positive excitation effect, thereby compensating for the attenuation of the ring vibration motion. At this time, the two elastic units 6 are in a stretched state to reset the counterweights next; when the ring vibration reaches the driving end and leaves the ground, the drive winder releases the flexible line 7, and under the action of the two elastic units 6, the two movable counterweights 3 are reset to their initial positions. Periodically exciting the counterweights can always maintain the ring vibration state.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A periodically excited ring oscillation motion mechanism, characterized in that: It comprises a circular ring, wherein a counterweight moving rod with its center of gravity located at the center of the circular ring is arranged inside the circular ring; a movable counterweight block for adjusting the center of gravity is arranged on the counterweight moving rod, and the movable counterweight block is movably arranged along the arrangement direction of the counterweight moving rod; It also includes a driving device for driving the movable counterweight to move, and the driving device is arranged on the ring; The circular ring is provided with a balancing weight block symmetrically arranged with respect to the driving device, so as to evenly distribute the center of gravity of the overall ring vibration motion mechanism on the circular ring; The counterweight moving rod is in a circular ring shape, and the driving device and the balancing weight block are symmetrically arranged on the counterweight moving rod; two movable weight blocks are symmetrically arranged and arranged between the driving device and the balancing weight block; The circular ring is in the shape of a hollow ring tube, and the counterweight moving rod is arranged on an annular guide rail inside the circular ring; The driving device is a driving winder, which is used to wind, tighten or release a flexible line. One side of the movable counterweight block is connected to the flexible line. The position of the movable counterweight block on the counterweight moving rod is adjusted by winding, tightening or releasing the flexible line. The side of the movable counterweight away from the flexible line is connected to the balancing counterweight through an elastic unit.

2. The periodically excited ring oscillation motion mechanism as claimed in claim 1, characterized in that: The elastic unit is a spring.

3. The periodically excited ring oscillation motion mechanism as claimed in claim 1, characterized in that: The balancing weight and the driving device are arranged outside the circular ring and on the same side.

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