阅读说明：本技术 一种二自由度弹簧—质量块减振装置 (Two-degree-of-freedom spring-mass block vibration damper ) 是由 梁志达 蒋邹 张永军 邱宝成 张传堂 覃裕波 于 2021-07-08 设计创作，主要内容包括：本发明公开了一种二自由度弹簧—质量块减振装置,包括直线导轨,所述直线导轨上滑动设有轴承滑块和减振块,所述轴承滑块上设有机架,所述机架远离减振块的一端设有与固定物连接的弹簧一,所述弹簧一的下端设有速度传感器,所述机架远离弹簧二的一端与减振块之间连接有弹簧二,所述机架上转动设有振动组件,所述振动组件包括偏心轮,所述偏心轮由驱动电机驱动。本发明与现有技术相比的优点在于：通过偏心轮激发机架的振动,利用弹簧—质量块减振系统吸收机架振动能量,通过定量与定性的分析与计算单自由度减振与二自由度振动各个参数,利用这些技术参数选定适当劲度系数的弹簧与质量块的质量,从而减小甚至消除机架振动。(The invention discloses a two-degree-of-freedom spring-mass block vibration damper, which comprises a linear guide rail, wherein a bearing sliding block and a vibration damping block are arranged on the linear guide rail in a sliding manner, a rack is arranged on the bearing sliding block, a first spring connected with a fixed object is arranged at one end, far away from the vibration damping block, of the rack, a speed sensor is arranged at the lower end of the first spring, a second spring is connected between one end, far away from the second spring, of the rack and the vibration damping block, a vibration assembly is rotationally arranged on the rack and comprises an eccentric wheel, and the eccentric wheel is driven by a driving motor. Compared with the prior art, the invention has the advantages that: the vibration of the frame is excited by the eccentric wheel, the vibration energy of the frame is absorbed by the spring-mass block vibration reduction system, parameters of single-degree-of-freedom vibration reduction and two-degree-of-freedom vibration are quantitatively and qualitatively analyzed and calculated, and the mass of the spring and the mass block with proper stiffness coefficients is selected by the technical parameters, so that the vibration of the frame is reduced or even eliminated.)

1. The utility model provides a two degree of freedom spring-quality piece damping device, includes linear guide (7), its characterized in that: linear guide (7) go up the slip and are equipped with bearing slider (8) and damping block (6), be equipped with frame (2) on bearing slider (8), the one end that damping block (6) were kept away from in frame (2) is equipped with spring (1) of being connected with the fixture, the lower extreme of spring (1) is equipped with speedtransmitter (9), be connected with between one end that spring two (5) were kept away from in frame (2) and damping block (6) spring two (5), it is equipped with vibration assembly to rotate on frame (2), vibration assembly includes eccentric wheel (4), eccentric wheel (4) are driven by driving motor.

2. A two degree-of-freedom spring-mass damping device according to claim 1, characterised in that: an installation groove is arranged on the eccentric wheel (4), and a detachable balancing weight (3) is arranged in the installation groove.

3. A two degree-of-freedom spring-mass damping device according to claim 1, characterised in that: and an opening is formed in the upper end of the vibration reduction block (6).

Technical Field

The invention relates to the technical field of mechanical vibration, in particular to a two-degree-of-freedom spring-mass block vibration damper.

Background

The current methods for inducing gantry vibration are mainly due to inertia imbalance. Common are crank-slider mechanisms, such as piston devices of engine crankshaft systems; the laundry of the drum washing machine also causes eccentricity when rotated, thereby vibrating the washing machine. The slider-crank mechanism needs to do rotary motion, and has enough power under the working condition of low rotating speed, which causes limitation to the application of the slider-crank mechanism.

The vibration reduction theory of the spring-mass system and the vibration principle of two degrees of freedom are abstract. At present, vibration and damping of the spring-mass system are mainly realized by a complex vibration table and are difficult to observe.

Disclosure of Invention

The invention aims to overcome the technical defects and provide a two-degree-of-freedom spring-mass block vibration damper.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a two degree of freedom spring-mass block damping device, includes linear guide, the last slip of linear guide is equipped with bearing slider and damping piece, be equipped with the frame on the bearing slider, the one end that damping piece was kept away from to the frame is equipped with the spring one of being connected with the fixture, the lower extreme of spring one is equipped with speed sensor, the frame is kept away from and is connected with spring two between the one end of spring two and the damping piece, it is equipped with the vibration subassembly to rotate in the frame, the vibration subassembly includes the eccentric wheel, the eccentric wheel is by driving motor drive.

As an improvement, the eccentric wheel is provided with a mounting groove, and a detachable balancing weight is arranged in the mounting groove.

As an improvement, the upper end of the vibration damping block is provided with an opening.

Compared with the prior art, the invention has the advantages that: the invention relates to a two-freedom-degree spring-mass block vibration damping device, which excites the vibration of a frame through an eccentric wheel, absorbs the vibration energy of the frame through a spring-mass block vibration damping system, selects the mass of a spring and a mass block with proper stiffness coefficients through quantitative and qualitative analysis and calculation of parameters of single-freedom-degree vibration damping and two-freedom-degree vibration, and further reduces or even eliminates the frame vibration.

Drawings

Fig. 1 is a schematic structural diagram of a two-degree-of-freedom spring-mass damping device according to the present invention.

As shown in the figure: 1. the device comprises a first spring, a second spring, a third spring, a fourth spring, a fifth spring, a sixth spring, a fourth spring, a fifth spring, a sixth spring, a fifth spring, a sixth spring, a fourth spring, a third spring, a fourth spring, a damping block, a bearing, a fourth spring, a linear guide rail, 8, a bearing block, a bearing, a speed sensor, 7, a linear guide rail, 8, a bearing slider, a linear guide, 8, a bearing slider, 9, a linear guide, 8, a bearing slider, a speed sensor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals.

It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

With reference to the attached drawing 1, the two-degree-of-freedom spring-mass block vibration damper comprises a linear guide rail 7, a bearing slide block 8 and a vibration damping block 6 are arranged on the linear guide rail 7 in a sliding mode, a rack 2 is arranged on the bearing slide block 8, a first spring 1 connected with a fixed object is arranged at one end, far away from the vibration damping block 6, of the rack 2, a speed sensor 9 is arranged at the lower end of the first spring 1, a second spring 5 is connected between one end, far away from the second spring 5, of the rack 2 and the vibration damping block 6, a vibration assembly is arranged on the rack 2 in a rotating mode and comprises an eccentric wheel 4, and the eccentric wheel 4 is driven by a driving motor.

An installation groove is arranged on the eccentric wheel 4, and a detachable balancing weight 3 is arranged in the installation groove.

And an opening is formed in the upper end of the vibration reduction block 6.

When the vibration reduction device is specifically implemented, the eccentric wheel is driven by the driving motor to realize rotary motion, the eccentric wheel is provided with a mounting groove, different balancing weights are applied to the eccentric wheel, the position of each balancing weight is adjusted, the mass center of the rack deviates to generate vibration of the rack, the upper end of the vibration reduction block is provided with an opening, sand can be added into the vibration reduction block to adjust the mass of the vibration reduction block, the speed sensor can monitor the vibration condition of the rack, when the mass in the vibration reduction block meets the vibration reduction performance, the integral mass of the rack is regarded as m1, the mass of the mass block is m2, and when k1/k is m2/m1, the vibration of the rack is reduced to the maximum extent, namely the vibration energy of the rack is minimum.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.