Rubber vibration isolator with electrorheological damping structure

Abstract

The utility model discloses a rubber vibration isolator with an electrorheological damping structure, which comprises a cylinder body and a rubber vibration isolator, the cylinder body is provided with a rubber disc, an insulating bush and a connecting disc, the insulating bush is internally provided with a negative plate, the connecting disc is internally provided with a piston in a sliding manner, and the piston is connected with a positive plate. A screw, a ball support and an extension spring are arranged between the rubber vibration isolator and the piston, a plurality of balls are arranged on the ball support and can freely rotate on the ball support, one end of the screw is connected with the rubber vibration isolator, the other end of the screw is connected with the ball support, and the balls make contact with the piston. One end of the extension spring is connected with the ball support, and the other end is connected with the piston. According to the vibration isolator, by means of the balls, vertical loads are reliably transmitted, the vertical rigidity and damping of the vibration isolator are changed through the magneto-rheological effect, and meanwhile the rubber rigidity and damping characteristics in the transverse direction are kept. Vibration of equipment can be effectively reduced, and the safe use requirement for vibration of the equipment is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber vibration isolators, and in particular relates to a rubber vibration isolator with an electrorheological damping structure. Background Art

[0002] Electrorheological fluid is an intelligent material with great development prospects and engineering application value. Electrorheological fluid with good performance can produce obvious electrorheological effect under the action of electric field, that is, it can be quickly and reversibly transformed between liquid and quasi-solid state, and maintain continuous viscosity. This transformation is extremely rapid, only takes a few milliseconds and is instantaneously controllable, with extremely low energy consumption, so it can be combined with a microcomputer to achieve real-time active control. Electrorheological damper vibration isolator is a damping vibration isolation control device that uses the electrorheological effect of electrorheological fluid to actively adjust the damping by changing the voltage applied to both ends of the electrorheological fluid. When the electrorheological damping vibration isolator of conventional structure uses the electrorheological effect to adjust the vertical stiffness and damping, the lateral stiffness and damping also change accordingly with the change of electrorheological fluid, and the original lateral stiffness and damping characteristics of the vibration isolator cannot be maintained, so it cannot meet the needs of some specific environmental applications. Utility Model Content

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the technical solution adopted by the utility model is to provide a rubber vibration isolator with an electrorheological damping structure, including a cylinder body and a rubber vibration isolator, the cylinder body is provided with a rubber disc, an insulating bushing and a connecting disc, a negative electrode plate is provided in the insulating bushing, a piston is slidably provided in the connecting disc, a positive electrode plate is connected to the piston, an electrorheological fluid is added to the cavity formed by the rubber disc, the insulating bushing, the negative electrode plate and the connecting disc, a screw, a ball bracket and a tension spring are provided between the rubber vibration isolator and the piston, a plurality of balls are provided on the ball bracket, and the balls can rotate freely on the ball bracket, one end of the screw is connected to the rubber vibration isolator, and the other end is connected to the ball bracket, the ball contacts the piston, one end of the tension spring is connected to the ball bracket, and the other end is connected to the piston.

[0005] In some embodiments, the positive plate is fixedly connected to the piston by bolts and nuts.

[0006] In some embodiments, the ball holder is disposed inside the tension spring.

[0007] In some embodiments, there are four balls in total.

[0008] Compared with the prior art, the utility model has the following beneficial effects: the utility model utilizes balls to reliably transmit vertical loads, utilizes magnetorheological effect to change the vertical stiffness and damping of the vibration isolator, and at the same time, maintains the rubber stiffness and damping characteristics in the lateral direction. While solving the need for adjustable stiffness and damping of the equipment in the vertical direction, the lateral stiffness and damping requirements of the rubber vibration isolator are still used in the lateral direction, which can effectively reduce the vibration of the equipment and meet the requirements for safe use of the equipment vibration. Compared with traditional vibration isolators, its application field, scope of application, reliability, safety, etc. have been greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a cross-sectional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0010] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0011] On the contrary, the present application covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present application as defined by the claims. Further, in order to make the public have a better understanding of the present application, some specific details are described in detail in the detailed description of the present application below. Those skilled in the art can fully understand the present application without the description of these details.

[0012] See also Figure 1 The present disclosure provides a rubber vibration isolator with an electrorheological damping structure, comprising a cylinder body 12 and a rubber vibration isolator 1, wherein a rubber disc 11, an insulating bushing 10 and a connecting disc 6 are arranged on the cylinder body 12, a negative electrode plate 9 is arranged in the insulating bushing 10, a piston 5 is slidably arranged in the connecting disc 6, and a positive electrode plate 8 is connected to the piston 5, and an electrorheological fluid 7 is added to the cavity formed by the rubber disc 11, the insulating bushing 10, the negative electrode plate 9 and the connecting disc 6, wherein a screw 2, a ball bracket 13 and a tension spring 3 are arranged between the rubber vibration isolator 1 and the piston 5, wherein a plurality of balls 4 are arranged on the ball bracket 13, and the balls 4 can rotate freely on the ball bracket 13, wherein one end of the screw 2 is connected to the rubber vibration isolator 1, and the other end is connected to the ball bracket 13, wherein the balls 4 contact the piston 5, and one end of the tension spring 3 is connected to the ball bracket 13, and the other end is connected to the piston 5.

[0013] The positive electrode plate 8 is fixedly connected to the piston 5 via bolts 102 and nuts 101 .

[0014] The ball support 13 is arranged inside the tension spring 3 .

[0015] There are four balls 4 in total.

[0016] When the equipment load is loaded onto the upper plane of the rubber vibration isolator 1, the rubber vibration isolator 1 is compressed and deformed, and the load is transmitted through the screw 2, so that the ball presses down the piston 5, so that the piston 5 and the positive plate 8 move downward. When the electrorheological fluid is not energized, the electrorheological fluid is in liquid state, and the equipment works under lower stiffness and damping. According to the working conditions of the unit, when the electrorheological fluid is energized, the electrorheological fluid becomes viscous, and its stiffness and damping are greatly increased, thereby improving the vertical stiffness and damping of the equipment. In the lateral direction, since the vibration isolator adopts a ball connection method, the unit maintains the original stiffness and damping of the rubber vibration isolator 1 in the lateral direction, so that the unit meets the requirements of vertical shock absorption while also meeting the requirements of lateral shock absorption.

[0017] The utility model uses balls to reliably transmit vertical loads, and uses magnetorheological effect to change the vertical stiffness and damping of the vibration isolator, while maintaining the rubber stiffness and damping characteristics in the lateral direction. While solving the need for adjustable stiffness and damping of the equipment in the vertical direction, the lateral stiffness and damping requirements of the rubber vibration isolator are still used in the lateral direction, which can effectively reduce the vibration of the equipment and meet the requirements for safe use of equipment vibration. Compared with traditional vibration isolators, its application field, scope of application, reliability, safety and other aspects have been greatly improved.

[0018] From the perspective of application areas, as the demands for safety and comfort of vibration equipment become increasingly higher, the safety and comfort caused by equipment vibration need to be better addressed to meet users' higher requirements.

[0019] From the perspective of product reliability and safety, this design, with the help of the characteristics of electrorheological effect, can accurately and quickly adjust the vertical stiffness and damping of the equipment to meet the equipment's normal working conditions and some special working conditions, such as impact, etc., to adjust the product stiffness and better protect the safe use of the equipment.

Claims

1. A rubber vibration isolator with an electrorheological damping structure, comprising a cylinder (12) and a rubber vibration isolator (1), wherein the cylinder (12) is provided with a rubber disc (11), an insulating bushing (10) and a connecting disc (6), a negative electrode plate (9) is provided in the insulating bushing (10), a piston (5) is slidably provided in the connecting disc (6), a positive electrode plate (8) is connected to the piston (5), an electrorheological fluid (7) is added in a cavity formed by the rubber disc (11), the insulating bushing (10), the negative electrode plate (9) and the connecting disc (6), and characterized in that: A screw rod (2), a ball bracket (13) and a tension spring (3) are arranged between the rubber vibration isolator (1) and the piston (5); a plurality of balls (4) are arranged on the ball bracket (13); the balls (4) can rotate freely on the ball bracket (13); one end of the screw rod (2) is connected to the rubber vibration isolator (1), and the other end is connected to the ball bracket (13); the balls (4) contact the piston (5); one end of the tension spring (3) is connected to the ball bracket (13), and the other end is connected to the piston (5).

2. A rubber vibration isolator with an electrorheological damping structure as claimed in claim 1, characterized in that: The positive electrode plate (8) is fixedly connected to the piston (5) via bolts (102) and nuts (101).

3. The rubber vibration isolator with electrorheological damping structure according to claim 1, characterized in that: The ball support (13) is arranged inside the tension spring (3).

4. The rubber vibration isolator with electrorheological damping structure according to claim 1, characterized in that: There are four balls (4) in total.

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