A vortex line type spring vibration absorbing device with adjustable stiffness

Abstract

The application discloses a vortex line type spring vibration absorbing device with adjustable rigidity, which mainly comprises a chassis, a support column, a sliding block device, a guide rail, a motor guide rail, a vortex line type spring, a motor pinion and a gear pair; the guide rail is connected with the chassis and the sliding block through a clamp; the vortex line type spring is fixed on the chassis; the support column is connected with the chassis through a fastening bolt; the motor guide rail is connected with the eight support columns through fastening bolts; the gear is connected with the eight support columns through bolts; the guide rail is connected with a guide rail clamp through an MGN9C, and a control system is installed on a top plate. The position of the sliding block on the vortex line type spring is changed by driving a motor through the control system, so that the spring rigidity is adjusted; the application has the characteristics of saving labor, high efficiency, strong applicability and stable work.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vibration control, in particular to a vortex line type spring vibration absorber with adjustable stiffness. BACKGROUND

[0002] Vibration control is crucial in industrial production. Vibration is harmful, which may affect production efficiency or even endanger production safety. Traditional spring vibration absorbers cannot adjust the stiffness of the spring, and it is difficult to achieve good vibration absorption effect for different frequency bands. When the natural frequency of the vibration absorber is consistent with the forced frequency of the equipment, the vibration absorption effect is achieved, but the limitation is obvious. In order to expand the application range of the vibration absorber, a new type of vibration absorber with adjustable stiffness is needed, such as a vortex line type spring vibration absorber with adjustable stiffness, so as to better adapt to vibrations of different frequency bands, improve the vibration control performance in industrial production, and ensure the efficiency and safety of production. SUMMARY

[0003] The purpose of the present application is to provide a vortex line spring vibration absorber with adjustable stiffness. For the vibration caused by different frequencies of external excitation of the controlled object, the equivalent stiffness of the vortex line type spring in the vibration absorber can be changed through feedback control, and then the natural frequency of the vibration absorber is changed, so that the frequency of the vibration absorber is the same as the frequency of the external excitation, and the vibration absorption effect is achieved.

[0004] The present application adopts the following technical solutions:

[0005] A vortex line type spring vibration absorber with adjustable stiffness mainly comprises a chassis, a support column, a sliding block guide clamp, a guide rail, a motor, a sliding block, a vortex line type spring, a motor pinion and a large gear connected vice; the guide rail is connected with the chassis and the sliding block through the clamp; the vortex line type spring is fixed on the chassis; the support column is connected with the chassis through a fastening bolt, and the motor guide rail is connected with the eight support columns through a fastening bolt; the large gear is connected with the eight support columns through a bolt; the guide rail and the guide rail clamp are connected through a linear guide rail, and a motor control module is installed on the top plate. The position of the sliding block in the vortex line type spring is changed by the control module to drive the motor to realize the adjustment of the stiffness of the spring.

[0006] Further, the clamp and the guide rail are connected through a rolling bearing.

[0007] Further, the stiffness of the vortex line type spring is adjusted by changing the position of the sliding block on the vortex line type spring.

[0008] Further, the eight support columns are inserted into the slots in the chassis, which can prevent the support large gear from deviating during movement.

[0009] Further, the material of the vortex line type spring is aluminum alloy.

[0010] The tunable stiffness vortex spring vibration absorbing device provided by the application can adjust the position of the slider on the vortex spring beam through the motor control module on the top, realize the self-adaptive adjustment of the stiffness of the vibration absorber, and the slider slides on the guide rail of the vortex spring beam, which is equivalent to changing the support position of the beam, so that the stiffness adjustment in a wide range can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification. The illustrations, together with their description, serve to explain the application.

[0012] Fig. 1 The figure is a general schematic diagram of the tunable stiffness vortex spring vibration absorbing device.

[0013] Fig. 2 The figure is a schematic diagram of the motor and the guide rail connection.

[0014] Fig. 3 The figure is a schematic diagram of the slider.

[0015] Fig. 4 The figure is a schematic diagram of the slider bearing assembly.

[0016] In the figure, 1 is the battery cover plate, 2 is the MGN9C type linear guide rail, 3 is the large gear, 4 is the guide rail, 5 is the motor, 6 is the motor pinion, 7 is the motor clamp, 8 is the guide rail clamp, 9 is the slider upper clamp, 10 is the motor guide rail, 11 is the vortex spring, 12 is the slider clamp cover, 13 is the bearing left, 14 is the support column, 15 is the aluminum bottom plate, 16 is the nylon universal ball, 17 is the slider lower clamp, 18 is the bottom plate, 19 is the 1.5mm rod, 20 is the slider hexagonal nut clamp front plate, 21 is the middle cover, 22 is the guide rail long clamp, 23 is the battery box, 24 is the guide rail cover, 25 is the outer threaded bearing, 26 is the clamp motor guide rail, and 27 is the bearing motor guide rail. DETAILED DESCRIPTION

[0017] The technical solutions of the application will be further described below in combination with the drawings:

[0018] As Figs. 1 to 4As shown, the adjustable stiffness vortex line type spring vibration absorbing device provided by the present application mainly comprises a large gear 3, a guide rail 4, a motor 5, a motor guide rail 10, a vortex line type spring 11, a support column 14, a chassis 18, a clamp motor guide rail 26, a bearing motor guide rail 27, an MGN9C2 and a motor pinion 6. The guide rail long clamp 22 is sleeved on the guide rail 4 and connected with the motor clamp 7 through the MGN9C2; the slider upper clamp 9 is connected with the guide rail 4 guide rail clamp 8; the vortex line type spring 11 is connected with the chassis 18 through three thin screw rods; the motor 5 top motor pinion 6 is connected with the support column 14 through the 5 large gear 3, the motor guide rail 10; the slider is connected by the slider upper clamp 9 and the slider lower clamp 17, and is connected with the slider clamp cover 12, the slider hexagonal nut clamp front plate 20 and the bearing fixed on the vortex line type spring 11 and slides.

[0019] The adjustable stiffness vortex line type spring vibration absorbing device provided by the present application can adjust the position of the slider on the vortex line type spring through the motor control module on the top, realize the self-adaptive adjustment of the stiffness of the vibration absorber, and is different from the conventional passive vibration absorber. The slider slides on the guide rail of the vortex line spring beam, which is equivalent to changing the support position of the beam, and thus the stiffness adjustment in a wide range can be realized. The adjustable stiffness vortex line type spring vibration absorbing device provided by the present application realizes the self-adaptive adjustment of the stiffness through the design of the motor and the vortex line type beam, compared with the conventional simply supported spring beam vibration absorber, can enhance the vibration absorbing effect while realizing the precise tuning in a wide range of low frequency, and has the characteristics of saving labor, high efficiency and stable work.

[0020] The above only describes one embodiment of the present application, and the protection scope of the present application is not limited to the above embodiment, but various ways considering the principles disclosed herein are still within the scope of the claims.

Claims

1. A stiffness-tunable scroll spring vibration absorber, characterized by, The device comprises a guide rail long clamp (22) which is sleeved on a guide rail (4) and connected with a motor clamp (7) through a MGN9C type linear guide rail (2); a slider upper clamp (9) is connected with a guide rail clamp (8) of the guide rail (4), the clamp clamps the slider to change the position on the vortex spring beam; the inside of the vortex spring beam is connected with a chassis (18) through three thin screw rods; a motor (5) top motor pinion (6) is matched with a support (14) through a large gear (3) and a motor guide rail (10); the slider is connected with the slider upper clamp (9) and the slider lower clamp (17) and fixed on the vortex spring beam through a slider clamp cover (12), a slider hexagonal nut clamp front plate (20) and a bearing, and slides; the position of the slider on the vortex spring beam is changed through the top motor, the slider slides on the guide rail of the vortex spring beam, which is equivalent to changing the support position of the beam, so as to realize wide range stiffness adjustment and precise tuning of the frequency of the vibration absorber; the motor pinion (6) is controlled by the motor (5) to rotate the large gear (3) to drive the slider to change the position on the vortex spring beam, at this time, the support position of the vortex spring beam is changed, that is, the stiffness of the vortex spring beam is changed.

2. A stiffness-tunable vortex-based spring vibration absorber according to claim 1, wherein: The chassis (18) is provided with a protrusion, and the protrusions of the vortex spring beams are connected through bolts.

3. A stiffness-tunable vortex-based spring vibration absorber according to claim 1, wherein: The support (14) is symmetrically distributed, the upper end is connected with the large gear (3) through a fastening bolt, and the lower end is connected with the chassis (18) through a fastening bolt.

4. A stiffness-tunable vortex-based spring vibration absorber according to claim 1, wherein: The material of the vortex spring beam of the vibration absorber is manganese copper alloy.

5. A stiffness-tunable vortex-based spring vibration absorber according to claim 1, wherein: The vortex spring beam of the vibration absorber is made of light aluminum alloy material, and the chassis and the support are made of resin.

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