阅读说明：本技术 一种往复机构减振装置 (Vibration damper of reciprocating mechanism ) 是由 梁志达 蒋邹 张永军 邱宝成 张传堂 覃裕波 于 2021-07-09 设计创作，主要内容包括：本发明公开了一种往复机构减振装置,包括滑动设置在滑轨上的振动机构,所述振动机构与固定物之间连接有弹簧一,所述振动机构的另一端连接有弹簧二,所述弹簧二远离振动机构的一端设有主动补偿机构,所述主动补偿机构连接有控制器,所述控制器连接有传感器,所述传感器用于实时采集振动机构的位移。本发明与现有技术相比的优点在于：结构简单,通过获取机构的振动位移计算补偿量,通过减振装置反向补偿来消除往复机构的激励,从而实现减振,且能满足变转速往复机构的减震需求,适应性更广。(The invention discloses a vibration damper of a reciprocating mechanism, which comprises a vibration mechanism arranged on a slide rail in a sliding manner, wherein a first spring is connected between the vibration mechanism and a fixed object, the other end of the vibration mechanism is connected with a second spring, one end of the second spring, which is far away from the vibration mechanism, is provided with an active compensation mechanism, the active compensation mechanism is connected with a controller, the controller is connected with a sensor, and the sensor is used for collecting the displacement of the vibration mechanism in real time. Compared with the prior art, the invention has the advantages that: the vibration reduction mechanism is simple in structure, compensation quantity is calculated through vibration displacement of the acquisition mechanism, excitation of the reciprocating mechanism is eliminated through reverse compensation of the vibration reduction device, vibration reduction is achieved, the vibration reduction requirement of the variable-speed reciprocating mechanism can be met, and the adaptability is wider.)

1. The utility model provides a reciprocating mechanism vibration damper, includes vibration mechanism (2) of slip setting on the slide rail, its characterized in that: be connected with spring one (3) between vibration mechanism (2) and the fixture, the other end of vibration mechanism (2) is connected with spring two (4), the one end that vibration mechanism (2) were kept away from in spring two (4) is equipped with initiative compensation mechanism, initiative compensation mechanism is connected with the controller, the controller is connected with sensor (1), sensor (1) is used for gathering the displacement of vibration mechanism (2) in real time.

2. A reciprocating mechanism vibration damping device according to claim 1, wherein: the active compensation mechanism comprises a lead screw (5), a lead screw nut (6) and a driving motor, the lead screw nut (6) is connected with the end of the second spring (4), the driving motor is used for driving the lead screw nut (6) to translate left and right on the lead screw (5), and the driving motor is electrically connected with the controller.

Technical Field

The invention relates to the technical field of damping mechanisms, in particular to a damping device of a reciprocating mechanism.

Background

Damping devices are commonly used to reduce unwanted vibrations associated with moving mechanisms. The vibrations of the reciprocating mechanism are caused by the inertial forces generated by its motion and these vibrations must be controlled to ensure the proper operation of the mechanism and to avoid damage, breakage and noise of the mechanism. The excitation of the reciprocating mechanism is periodic and if the simple harmonic excitation frequency of the mechanism is equal to the natural frequency of the mechanism, resonance is formed, and serious resonance can have destructive effects.

The prior patent technology mainly adopts an eccentric wheel in a product, the eccentric wheel needs to do rotary motion, enough large moment of inertia is needed under the working condition of low rotating speed, the device is only suitable for the condition that the mechanism is at stable rotating speed, and for a reciprocating mechanism with variable rotating speed, a single cam mechanism cannot meet the vibration reduction of the mechanism.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the technical defects and provide the damping device of the reciprocating mechanism, which has a simple structure and stronger applicability.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a reciprocating mechanism vibration damper, sets up the vibration mechanism on the slide rail including sliding, be connected with spring one between vibration mechanism and the fixture, the other end of vibration mechanism is connected with spring two, the one end that vibration mechanism was kept away from to spring two is equipped with initiative compensation mechanism, initiative compensation mechanism is connected with the controller, the controller is connected with the sensor, the sensor is used for gathering vibration mechanism's displacement in real time.

As an improvement, the active compensation mechanism comprises a lead screw, a lead screw nut and a driving motor, the lead screw nut is connected with the end of the second spring, the driving motor is used for driving the lead screw nut to horizontally move on the lead screw left and right, and the driving motor is electrically connected with the controller.

Compared with the prior art, the invention has the advantages that: the vibration damping device for the reciprocating mechanism is simple in structure, the compensation quantity is calculated by obtaining the vibration displacement of the mechanism, and the excitation of the reciprocating mechanism is eliminated by reverse compensation of the vibration damping device, so that vibration damping is realized, the vibration damping requirement of the variable-speed reciprocating mechanism can be met, and the vibration damping device is wider in adaptability.

Drawings

Fig. 1 is a simplified diagram of an energized form of a reciprocating mechanism.

Fig. 2 is a conversion diagram of the excitation form of the reciprocating mechanism.

Fig. 3 is a schematic view of a cam mechanism employed in the energizing form of the reciprocating mechanism.

FIG. 4 is a schematic structural view of a damping device for a reciprocating mechanism according to the present invention.

As shown in the figure: 1. the device comprises a sensor 2, a vibration mechanism 3, springs I and II and 5, a lead screw 6 and a lead screw nut.

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 the attached drawings, the excitation form of the reciprocating mechanism can be simplified into a crank-slider mechanism. As shown in fig. 1, the simplified mechanism consists of a slider-crank mechanism and springs, the reciprocating mechanism being described by a spring k and a mass m. As shown in fig. 2, the system is further simplified into a single-mass spring vibration system, where x is the vibration displacement generated during the operation of the system, and f (t) is the external force applied to the mass m.

The operating mechanism of fig. 3 is: continuously exerting a displacement on the right side of the mass m opposite to the movement direction of the mass m, connected by a spring k1, so as to counteract f (t) and eliminate the vibration of the mechanism, i.e. the vibration

For a mechanism operating at a steady rotational speed, the mechanism of fig. 3 can be used to cancel the vibration of the mechanism, deltax is calculated,

and drawing the curve of the cam to manufacture the cam structure.

However, for a variable speed reciprocating mechanism, a single cam mechanism cannot meet the damping of the mechanism. Therefore, an active compensation mechanism is needed, as shown in fig. 4. The displacement of the vibration mechanism is collected in real time through the sensor, the amount to be compensated is calculated through the controller, an instruction is sent to the driving motor, the operation of the driving motor is controlled, the lead screw nut fixedly connected with the driving motor moves back and forth on the lead screw, vibration compensation is achieved, and vibration of the mechanism is eliminated.

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.