Vortex line type spring vibration absorption device with tunable rigidity

Abstract

The invention discloses a rigidity-tunable vortex line type spring vibration absorption device. The rigidity-tunable vortex line type spring vibration absorption device mainly comprises a chassis, a supporting column, a sliding block device, a guide rail, a motor guide rail and a vortex line type spring, wherein a motor small gear and a large gear form a connecting pair; the guide rails are connected with the chassis and the sliding blocks through clamps; the vortex linear spring is fixed on the chassis; the supporting columns are connected with the chassis through fastening bolts, and the motor guide rail is connected with the eight supporting columns through fastening bolts. The large gear is connected with the eight supporting columns through bolts; the guide rail is connected with the guide rail clamp through MGN9C, and a control system is installed on the top plate. The control system drives the motor to change the position of the sliding block on the vortex line type spring so as to achieve spring rigidity adjustment. The device has the characteristics of labor-saving adjustment, high efficiency, strong applicability and stable work.

Description

Technical Field

[0001] The invention relates to the field of vibration control, and in particular to a vortex spring vibration absorbing device with adjustable stiffness. Background Art

[0002] Vibration control is crucial in industrial production. Vibration is very harmful. At the least, it affects production efficiency, and at the worst, it endangers production safety. Traditional spring vibration absorbers cannot adjust the spring stiffness, and it is difficult to achieve a good vibration absorption effect for vibrations in different frequency bands. When the natural frequency of the vibration absorber is consistent with the forced frequency of the equipment, it has a vibration absorption effect, but the limitations are obvious. In order to expand the application range of vibration absorbers, a new type of vibration absorption device with adjustable stiffness is needed, such as a vortex spring vibration absorption device with adjustable stiffness, to better adapt to vibrations in different frequency bands, improve the vibration control performance in industrial production, and ensure efficient and safe production. Summary of the invention

[0003] The purpose of the present invention is to propose a vortex spring vibration absorber with adjustable stiffness. In response to the vibration caused by external excitation of different frequencies to the controlled object, the equivalent stiffness of the vortex spring in the vibration absorber can be changed through feedback control, thereby changing the natural frequency of the vibration absorber, so that the frequency of the vibration absorber is the same as the external excitation frequency, thereby achieving the vibration absorption effect.

[0004] The present invention adopts the following technical solutions: A vortex spring vibration absorbing device with adjustable stiffness mainly includes a chassis, a pillar, a slider guide rail fixture, a guide rail, a motor, a slider, a vortex spring, a motor pinion and a large gear forming a connection pair; the guide rail is connected to the chassis and the slider through a fixture; the vortex spring is fixed on the chassis; the pillar is connected to the chassis through a fastening bolt, and the motor guide rail is connected to eight pillars through fastening bolts; the large gear is connected to the eight pillars through bolts; the guide rail is connected to the guide rail fixture through a linear guide rail, and a motor control module is installed on the top plate. The control module drives the motor to change the position of the slider on the vortex spring to achieve spring stiffness adjustment.

[0005] Furthermore, the clamp and the guide rail of the present invention are connected via a rolling bearing.

[0006] Furthermore, the present invention achieves stiffness adjustment of the vortex spring by changing the position of the slider on the vortex spring.

[0007] Furthermore, the eight pillars of the present invention are inserted into the chassis slots, and this structure can prevent the supporting large gear from being offset during the movement.

[0008] Furthermore, the vortex spring material of the present invention is aluminum alloy.

[0009] The vortex-type spring vibration absorber with adjustable stiffness provided by the present invention is different from the traditional passive vibration absorber in that the position of the slider on the vortex-type spring can be adjusted by the motor control module on the top to achieve adaptive adjustment of the stiffness of the vibration absorber; the slider slides on the guide rail of the vortex-type spring beam, which is equivalent to changing the support position of the beam, thereby achieving a wide range of stiffness adjustment; the vortex-type spring vibration absorber with adjustable stiffness described in the present invention achieves adaptive stiffness adjustment through the design of the motor and the vortex-type beam. Compared with the traditional simply supported spring beam vibration absorber, it can enhance the vibration absorption effect while achieving precise tuning over a wide range of low frequencies, and has the characteristics of labor-saving adjustment, high efficiency and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic examples and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 It is a general schematic diagram of the vortex spring vibration absorbing device with adjustable stiffness according to the present invention; Figure 2 This is a schematic diagram of the connection between the motor and the guide rail according to the present invention; Figure 3 A schematic diagram of a slider according to the present invention; Figure 4 This is a schematic diagram of the assembly of the slider bearing claimed in the present invention.

[0011] Marked in the figure: 1-battery cover, 2-MGN9C linear guide, 3-large gear, 4-guide, 5-motor, 6-motor pinion, 7-motor fixture, 8-guide fixture, 9-slider upper fixture, 10-motor guide, 11-vortex spring, 12-slider fixture cover, 13-bearing left, 14-pillar, 15-aluminum base plate, 16-nylon universal ball, 17-slider lower fixture, 18-chassis, 19-1.5mm rod, 20-slider hexagonal nut fixture front plate, 21-middle cover, 22-guide long fixture, 23-battery box, 24-guide cover, 25-external threaded bearing, 26-fixture motor guide, 27-bearing motor guide. DETAILED DESCRIPTION

[0012] The technical solution of the present invention is further described below in conjunction with the accompanying drawings: like Figures 1 to 4As shown, the vortex spring vibration absorbing device with adjustable stiffness described in the present invention mainly includes a large gear 3, a guide rail 4, a motor 5, a motor guide rail 10, a vortex spring 11, a pillar 14, a chassis 18, a fixture motor guide rail 26, a bearing motor guide rail 27, MGN9C2 and a motor pinion 6. The long guide rail clamp 22 is sleeved on the guide rail 4 and connected to the motor clamp 7 through MGN9C2; the upper slider clamp 9 is connected to the guide rail 4 and the guide rail clamp 8; the vortex spring 11 is connected to the chassis 18 through three thin screws; the motor pinion 6 at the top of the motor 5 cooperates with the pillar 14 through the large gear 3 and the motor guide rail 10; the slider is connected to the slider clamp cover 12 and the slider hexagonal nut clamp front plate 20 and the bearing to slide on the vortex spring 11.

[0013] The vortex-type spring vibration absorber with adjustable stiffness provided by the present invention is different from the traditional passive vibration absorber in that the position of the slider on the vortex-type spring can be adjusted by the motor control module on the top to achieve adaptive adjustment of the stiffness of the vibration absorber; the slider slides on the guide rail of the vortex-type spring beam, which is equivalent to changing the support position of the beam, thereby achieving a wide range of stiffness adjustment; the vortex-type spring vibration absorber with adjustable stiffness described in the present invention achieves adaptive stiffness adjustment through the design of the motor and the vortex-type beam. Compared with the traditional simply supported spring beam vibration absorber, it can enhance the vibration absorption effect while achieving precise tuning over a wide range of low frequencies, and has the characteristics of labor-saving adjustment, high efficiency and stable operation.

[0014] The above description is only one embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. However, it can be considered that various modes of the principles disclosed here are still within the scope of the claims.

Claims

1. A vortex spring vibration absorbing device with adjustable stiffness, characterized in that: The invention comprises a long guide rail clamp (22), wherein the long guide rail clamp (22) is sleeved on the guide rail (4) and connected to the motor clamp (7) via the MGN9C linear guide rail (2); a clamp (9) on the slider is connected to the guide rail clamp (8) of the guide rail (4), and the clamp clamps the slider to change the position on the vortex spring; the vortex spring (11) is connected to the chassis (18) via three thin screws; a motor pinion (6) on the top of the motor (5) is connected via a large gear (3), the motor guide rail ( 10) cooperates with the pillar (14); the slider is connected to the slider clamp cover (12) and the slider hexagonal nut clamp front plate (20) and the bearing to slide on the vortex spring (11); the position of the slider on the vortex spring is changed by the motor on the top, and the slider slides on the guide rail of the vortex spring beam, which is equivalent to changing the support position of the beam to achieve a wide range of stiffness adjustment, thereby achieving precise tuning of the vibration absorber frequency.

2. The vortex spring vibration absorbing device with adjustable stiffness according to claim 1, characterized in that: The chassis (18) is provided with a protrusion, and the protrusion of the vortex spring (11) is connected by bolts.

3. The vortex spring vibration absorbing device with adjustable stiffness according to claim 1, characterized in that: The pillars (14) are symmetrically distributed, with the upper ends being connected to the large gear (3) by fastening bolts, and the lower ends being connected to the chassis (18) by fastening bolts.

4. The vortex spring vibration absorbing device with adjustable stiffness according to claim 1, characterized in that: The motor (5) controls the motor pinion (6) to rotate on the large gear (3) to drive the slider to the position of the vortex spring (11). At this time, the supporting position of the vortex spring (11) changes, that is, the stiffness of the vortex spring (11) is changed.

5. The vortex spring vibration absorbing device with adjustable stiffness according to claim 1, characterized in that: The vortex spring material of the vibration isolator is manganese-copper alloy.

6. The vortex spring vibration absorbing device with adjustable stiffness according to claim 1, characterized in that: The vortex-type spring beam of the vibration absorber is made of lightweight aluminum alloy, and the chassis and pillars are made of resin.

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