CN202586624U - Single-motor unidirectional chaotic vibration device - Google Patents

Abstract

The utility model provides a single-motor unidirectional chaotic vibration device, which comprises a motor, a driving gear, a direct transmission gear, an intermediate gear and a reverse gear; the motor and the driving gear are coaxially connected; the driving gear meshes with the direct transmission gear, and the driving gear The intermediate gear meshes with the reverse gear; the direct transmission gear is fixed on the direct transmission gear shaft, and the reverse gear is fixed on the reverse gear shaft; the direct transmission gear shaft is also fixed with a second eccentric wheel coaxial with the direct transmission gear , the first eccentric wheel coaxial with the reverse gear is also fixed on the reverse gear shaft. The utility model uses 4 gears to convert the rotational motion of a power source into the reverse and simultaneous rotation of two eccentric wheels in the same plane, which offsets the eccentric force in the horizontal direction and produces non-periodic (chaos) in the vertical direction. Vibration; this kind of vibration has a wider frequency band, which can make the compacted particles produce better resonance and obtain better compaction effect.

Description

A single-motor one-way chaotic vibration device

technical field

The utility model belongs to the field of vibration machinery, in particular to a single-motor one-way chaotic vibration device, which uses a single motor and a gear transmission mechanism to generate one-way chaotic vibration.

Background technique

Compaction machinery is an essential construction equipment for foundation construction, dam and port construction, airport construction, mine construction, forest area construction and other projects. Effective compaction can significantly improve the bearing capacity and stability of filling and foundation works, and reduce or eliminate the hazards caused by subsidence. Vibration compaction has a better compaction effect than static pressure compaction, because if the vibration frequency is consistent with the natural frequency of the compacted soil, it can generate resonance, eliminate gaps, and reduce internal friction, which is conducive to compaction . Traditional periodic vibration compaction can only produce a single vibration frequency, and the size and nature of soil particles determine that the resonance frequency of the soil is a range, so periodic vibration cannot cause soil particles to resonate in the full range, while chaotic signals have a wide frequency spectrum If chaotic vibration with wide frequency spectrum is generated, better compaction effect can be obtained.

Contents of the invention

The purpose of this utility model is to provide a single-motor one-way chaotic vibration device, which can use the motor to generate one-way chaotic vibration, and the vibration frequency is wide, and can make soil particles resonate in a wider frequency range to obtain higher s efficiency.

The technical solution adopted by the utility model is a single-motor unidirectional chaotic vibration device, including a motor, a driving gear, a direct transmission gear, an intermediate gear and a reverse gear; the motor is connected with the driving gear coaxially; The gears mesh, and the driving gear meshes with the reverse gear through the intermediate gear; the direct transmission gear is fixed on the direct transmission gear shaft, and the reverse gear is fixed on the reverse gear shaft; the direct transmission gear shaft is also fixed with the same The second eccentric wheel of the shaft, the first eccentric wheel coaxial with the reverse gear is also fixed on the reverse gear shaft; the center planes of the first eccentric wheel and the second eccentric wheel are located in the same plane and the eccentric distances of the two are the same .

Wherein, the motor is arranged on the bottom plate through the motor support.

Wherein, the direct transmission gear shaft is supported on the base plate through the second bearing.

Wherein, the reverse gear shaft is supported on the base plate through the first bearing.

Wherein, a counterweight is also fixed on the bottom plate.

The beneficial effect of the utility model is that four gears are used to convert the rotary motion of a power source into the reverse rotation of two eccentric wheels at the same speed in the same plane, which offsets the eccentric force in the horizontal direction and produces a vertical rotation. Aperiodic (chaotic) vibration; this kind of vibration has a wider frequency band, which can make the compacted particles produce better resonance and obtain better compaction effect.

Description of drawings

Fig. 1 is the structural representation of the vibration device of the present utility model;

Fig. 2 is the A direction view of Fig. 1;

Fig. 3 is the schematic structural diagram of the connection between the motor and the driving gear in the vibration device of the present invention;

Fig. 4 is a structural schematic diagram of the coaxial connection between the direct transmission gear and the second eccentric wheel in the vibration device of the present invention;

Fig. 5 is a structural schematic diagram of the coaxial connection between the reverse gear and the first eccentric wheel in the vibrating device of the present invention;

Fig. 6 is a force analysis diagram of the first eccentric wheel and the second eccentric wheel.

In the figure, 1. reverse gear, 2. intermediate gear, 3. driving gear, 4. motor support, 5. direct transmission gear, 6. direct transmission gear shaft, 7. reverse gear shaft, 8. motor, 9 . Counterweight, 10. Second eccentric wheel, 11. First eccentric wheel, 12. Bottom plate, 13. Fence, 14. Second support, 15. First support, 16. Handle.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model provides a single-motor one-way chaotic vibration device, which uses a motor 8 to generate chaotic motion, and transmits the rotation of the motor 8 to the direct transmission gear 5 and an intermediate gear 2 respectively through the driving gear 3 coaxial with the motor 8 Give the reverse gear 1, so that the speed of the direct transmission gear 5 is the same as that of the reverse gear 1, and the direction of rotation is opposite; respectively, two eccentric wheels with the same eccentricity are connected coaxially with the direct transmission gear 5 and the reverse gear 1, respectively. Two eccentric wheels 10 and the first eccentric wheel 11, the two eccentric forces generated by the two eccentric wheels rotating in opposite directions at the same speed in the same vertical plane cancel each other out in the horizontal direction, and the vertical direction is doubled, thereby producing chaos (aperiodic ) unidirectional vibration. Concrete structure as shown in Figure 1 and Figure 2, a kind of single-motor unidirectional chaotic vibration device provided by the utility model includes motor 8, driving gear 3, direct transmission gear 5, intermediate gear 2 and reverse gear 1; 8 is coaxially connected with the driving gear 3; the driving gear 3 meshes with the direct transmission gear 5, and the driving gear 3 meshes with the reverse gear 1 through the intermediate gear 2; the direct transmission gear 5 is fixed on the direct transmission gear shaft 6, and the reverse gear 1 is fixed on the reverse gear shaft 7; the second eccentric wheel 10 coaxial with the direct transmission gear 5 is also fixed on the direct transmission gear shaft 6, and the second eccentric wheel 10 coaxial with the reverse gear 1 is also fixed on the reverse gear shaft 7 The first eccentric wheel 11; the second eccentric wheel 10 and the first eccentric wheel 11 are located on the same plane, and the eccentric distances of the two are the same.

As shown in FIG. 3 , the motor 8 is installed on the bottom plate 12 through the motor support 4 , and the counterweight 9 is also fixed on the bottom plate 12 . As shown in FIG. 4 , the direct transmission gear shaft 6 and the second eccentric wheel 10 are supported on the bottom plate 12 through the second support 14 . As shown in FIG. 5 , the counter gear shaft 7 and the first eccentric wheel 11 are supported on the bottom plate 12 through the first support 15 .

The working principle of the utility model is that the motor 8 drives the driving gear 3 to rotate, the driving gear 3 transmits the rotation on the motor shaft to the direct transmission gear 5, and at the same time, the driving gear 3 transmits the rotation on the motor shaft to the counter through the intermediate gear 2 Direction gear 1, driving gear 3, direct transmission gear 5 and reverse gear 1 have the same number of teeth, when driving gear 3 drives direct transmission gear 5 and reverse gear 1 to rotate, direct transmission gear 5 and reverse gear 1 rotate at the same speed but turn on the contrary. The rotating part of the whole vibrating device is surrounded by a fence 13 to play a protective role, and a handle 16 is fixed on the fence 13 to facilitate the use of the operator. Adjust the position of counterweight 9 on the bottom plate 12, can make the center of gravity of whole vibrating device be positioned at the midpoint of the line connecting the axes of the first eccentric wheel 11 and the second eccentric wheel 10, so that the whole device is subjected to non-periodic vibration through the center Force driven to vibrate. As shown in Figure 6, when the direct transmission gear 5 and the reverse gear 1 rotate at the same speed and reverse, the first eccentric wheel 11 and the second eccentric wheel 10 also rotate at the same speed and reverse, because the eccentric distance M× r (M is the mass of the eccentric mass, and r is the eccentric distance from the center of the eccentric mass to the axis of rotation) is the same, and the rotational speed is also the same (the rotational speed of the two eccentric wheels is ω), so the eccentric forces F ₁ and F ₂ (F ₁ is the eccentric force produced by the first eccentric wheel 11, _F2 is the eccentric force produced by the second eccentric wheel 10) and the magnitudes are also the same, and the two eccentric forces _F1 and _F2 are decomposed along the horizontal x-axis and the vertical y-axis respectively , the obtained x-axis component forces F _1x and F _2x are equal in magnitude and opposite in direction, so they cancel each other out. The resultant force in the vertical direction is F _y =F _1y +F _2y =2Mrω ² cosωt, where t is time. If ω is an aperiodic (chaotic) signal, the vibration force F _y in the vertical direction is also aperiodic, and such a vibration force with a wide frequency spectrum can produce better compaction effect.

The unidirectional vibration device driven by a single motor provided by the present invention uses a gear transmission system to convert the chaotic rotational speed on the shaft of the motor 8 into a unidirectional chaotic vibration in the vertical direction, and the vibration in the horizontal direction is offset, so that the energy of the motor 8 is all Transformed into vertical non-periodic vibration, non-periodic vibration can make soil particles resonate in a wider frequency spectrum and improve compaction efficiency.

Claims (5)

1. a single motor unidirectional chaotic vibrating device is characterized in that: comprise motor (8), driving gear (3), direct drive gear (5), intermediate gear (2) and reverse gear (1); motor ( 8) Coaxially connected with the driving gear (3); the driving gear (3) meshes with the direct transmission gear (5), and the driving gear (3) meshes with the reverse gear (1) through the intermediate gear (2); the direct transmission gear (3) meshes with the reverse gear (1); Transmission gear (5) is fixed on the direct transmission gear shaft (6), and reverse gear (1) is fixed on the reverse gear shaft (7); ) coaxial second eccentric wheel (10), the reverse gear shaft (7) is also fixed with the first eccentric wheel (11) coaxial with the reverse gear (1); the first eccentric wheel (10) and the second eccentric wheel The central planes of the two eccentric wheels (11) are located in the same plane, and the eccentric distances of the two eccentric wheels are the same. 2. The single-motor unidirectional chaotic vibration device according to claim 1, characterized in that: the motor (8) is arranged on the bottom plate (12) through a motor support (4). 3. The single-motor unidirectional chaotic vibration device according to claim 2, characterized in that: the direct transmission gear shaft (6) is supported on the bottom plate (12) through the second support (14). 4. The single-motor one-way chaotic vibration device according to claim 2, characterized in that: the reverse gear shaft (7) is supported on the bottom plate (12) through the first support (15). 5. The single-motor unidirectional chaotic vibration device according to claim 2, characterized in that: a counterweight (9) is also fixed on the bottom plate (12).

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