CN213808580U

CN213808580U - Rotary viscous damper

Info

Publication number: CN213808580U
Application number: CN202021410799.9U
Authority: CN
Inventors: 王豫; 魏陆顺; 梁欢文; 何思杰
Original assignee: Guangzhou Baianju Shock Absorption Technology Co Ltd
Current assignee: Guangzhou Baianju Shock Absorption Technology Co Ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-07-27
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a rotatory viscous damper, its casing has the inner chamber, the opening part assembly end cover of casing, the rotation axis is planted to casing and end cover, the rotation axis is worn out outside the end cover, the end installation drive wheel that stretches out of rotation axis, rotatory axle sleeve is equipped with the driving disk, correspondingly, the inner chamber cover of casing is equipped with the price fixing, price fixing and driving disk are arranged on the axis at interval, casing and the damping space packing damping fluid of rotation axis and end cover formation, price fixing and driving disk soak in the damping fluid, when the drive wheel accepts vibration external force, it produces the rotation to drive the epaxial driving disk of rotation, produce rotation type shearing frictional force between the terminal surface in opposite directions of pivoted driving disk and price fixing, under the condition of the absorption kinetic energy of viscous damping fluid, with external force slow consumption, the damping function has been realized, it is succinct easy to make to have the structure, small effect.

Description

Rotary viscous damper

Technical Field

The utility model belongs to the technical field of the damping, specifically be relate to a rotate the device that produces damping force and realize power consumption purpose in damping medium through the rotator.

Background

As is well known, mechanical products such as shock absorbers, couplings, manipulators, sensors, etc., are essentially provided with damping elements in order to overcome vibrations. The viscous damper is a speed-dependent energy consumption device and is widely applied to the fields of buildings, bridges, military industry and the like. Viscous dampers can be broadly classified into two types: the first is that in a closed space, a piston forces viscous liquid to pass through a small hole at a certain speed so as to generate damping force, and the damper has high requirements on the manufacturing process; the second is that the moving body of the damper makes a linear shearing motion in the cavity of the viscous liquid at a certain speed so as to generate damping force, the force of the damper is large, but the contact area of the moving part and the cavity is large, so that the whole product volume is large, and the use scene is limited.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a rotation viscous damper that the structure is succinct and easy manufacturing, small, nimble configuration damping force.

In order to solve the technical problem, the utility model discloses a technical scheme be: a rotary viscous damper comprises a shell and an end cover, wherein the shell is provided with an inner cavity, the end cover is assembled at an opening of the shell, a rotary shaft is inserted into the shell and the end cover, the rotary shaft penetrates out of the end cover, a driving wheel is installed at the extending end of the rotary shaft, a movable disc is sleeved on the rotary shaft, correspondingly, a fixed disc is sleeved in the inner cavity of the shell, and the fixed disc and the movable disc are arranged on the axis at intervals; damping fluid is filled in a damping space formed by the shell, the rotating shaft and the end cover; the fixed disc and the movable disc are soaked in damping liquid.

Furthermore, the movable disc and the fixed disc form a damping layer in a set manner.

Further, the damping layer is composed of a movable disc and a fixed disc.

Further, the damping layer is composed of a movable disc and two fixed discs.

Further, the damping layer is composed of two movable disks and a fixed disk.

Further, the damping layer has a plurality of layers, and adjacent damping layers share a movable disc or a fixed disc.

Furthermore, a distance sleeve is arranged between the adjacent movable disks and sleeved on the rotating shaft; and a distance ring is arranged between the adjacent fixed disks and sleeved in the inner cavity of the shell.

Further, the distance sleeve and the rotating shaft are assembled through a polygonal hole shaft structure; the distance ring and the inner cavity of the shell are assembled through a spline structure.

Furthermore, the damping space is also provided with a filler expanded by heat energy, and the filler is soaked in the damping liquid.

Implement the technical scheme of the utility model, because supporting driving disk and fixed disk in pairs between casing and the rotation axis, when the drive wheel accepts vibration external force, it produces the rotation to drive epaxial driving disk of rotation, produce rotation type shearing friction force between the terminal surface in opposite directions of pivoted driving disk and fixed disk, under the condition of the absorption kinetic energy of viscous damping fluid, with the slow consumption of external force, damping function has been realized, under the prerequisite of guaranteeing required great damping force, not only compare the effect that the structure is succinct easily made to have in piston structure, and compare straight line shearing type structure again and have small effect, the combination quantity on damping layer can be nimble changeable, a plurality of attenuators realize power linkage through the drive wheel simultaneously, reach and be suitable for different damping system application scenes.

Drawings

Fig. 1 is a schematic view of an assembly structure of a rotary viscous damper.

Fig. 2 is an exploded view of a rotary viscous damper.

In the figure: 1-rotating shaft, 2-shell, 3-end cover, 4-shell bearing, 5-end cover bearing, 6-distance ring, 7-outer supporting ring, 8-distance ring, 9-basic layer moving disk, 10-additional layer moving disk, 11-basic layer moving disk, 12-additional layer moving disk, 13-driving wheel, 14-distance sleeve, 15-distance sleeve, 16-inner supporting ring, 17-sealing device, 18-filler and 19-damping liquid.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the rotary viscous damper is mainly composed of a rotary shaft 1, a housing 2, an end cover 3, a basic damping layer, an additional damping layer, a compression layer and a driving wheel 13, which are coaxially installed. The end cap 3 is mounted on the shell 2, and the contact surface between the shell 2 and the end cap 3 is provided with a sealing material.

One end of a rotating shaft 1 penetrates through an end cover 3, the rotating shaft 1 is connected with the end cover through an end cover bearing 5, a sealing device 17 is further arranged between the rotating shaft 1 and the end cover 5, the rotating shaft 1 is connected with a shell 2 through a shell bearing 4, and the rotating shaft 1 freely rotates relative to the shell 2 and the end cover 3. The sealing device 17 functions to prevent the damping fluid 19 from overflowing from the gap between the rotary shaft 1 and the end cover 3. The driving wheel 13 is fixedly connected with one end of the rotating shaft 1 penetrating out of the end cover 3, and the driving wheel 13 is not contacted with the end cover. The outer circle of the driving wheel 13 can be a gear, a belt wheel, a chain wheel, a friction wheel and the like. A cavity bearing 4 is arranged between the rotating shaft 1 and the shell 2, and an end cover bearing 5 is arranged between the rotating shaft 1 and the end cover 3.

The rotary viscous damper is provided with a basic damping layer, and an additional damping layer is not arranged above the basic damping layer or is added with one or more additional damping layers (the figure is one additional damping layer). The rotary viscous damper has a compression layer which may be located at the bottom, middle or upper portion of the cavity in the housing 2 (the compression layer in this illustration is located at the upper portion of the cavity in the housing 2). The basic damping layer, the additional damping layer and the compression layer of the rotary viscous damper are communicated, damping liquid 19 is filled in the rotary viscous damper, and the damping liquid 19 can freely flow in each layer. The type of the damping fluid 19 is not limited to a viscous type, and may be a non-viscous type such as a lubricating type, a viscoelastic type, and a non-newtonian fluid type, which provides both damping and stiffness, while providing only damping without increasing stiffness.

The basis damping layer comprises basic layer driving disk 9 and basic layer price fixing disk 11, distance circle 6 is installed in the bottom of casing 2, basic layer price fixing disk 11 is installed in the up end of distance circle 6, basic layer driving disk 9 is installed in rotation axis 1, the bottom support ring is still supporting basic layer driving disk 9, distance cover 14 is installed in rotation axis 1, distance cover 14 is vertical to be installed in the up end of basic layer driving disk 9, there is certain clearance between the outside of basic layer driving disk 9 and the inboard of distance circle 6, there is certain clearance between the inboard of basic layer price fixing disk 11 and the outside of distance cover 14.

Additional damping layer comprises additional layer driving disk 10 and additional layer fixed disk 12, distance circle 8 is installed in the up end of basic layer fixed disk 11, additional layer fixed disk 12 is installed in the up end of distance circle 8, additional layer driving disk 10 is installed in rotation axis 1, additional layer driving disk 10 is vertical to be installed in the up end of distance cover 14, distance cover 15 is installed in rotation axis 1, distance cover 15 is vertical to be installed in the up end of additional layer driving disk 10, and keep level basically with rotation axis 1 middle part boss up end, there is certain clearance between the outside of additional layer driving disk 10 and the inboard of distance circle 8, there is certain clearance between the inboard of additional layer fixed disk 12 and the outside of distance cover 15.

The compression layer is composed of a filler 18, an outer support ring 7 and an inner support ring 16, the outer support ring 7 is mounted on the upper end face of the additional layer fixed plate 12, the inner support ring 16 is mounted on the upper end face of the distance sleeve 15 and plays a role in limiting the vertical movement of the rotating shaft 1 and the distance sleeve 15, the upper end face of the inner support ring 16 supports the inner ring of the end cover bearing 5, the filler 18 is mounted between the compression layers formed by the outer support ring 7 and the inner support ring 16, the filler 18 plays a role in offsetting volume expansion caused by temperature rise of damping fluid through self deformation, the filler 18 does not rotate, and a certain gap is reserved between the filler 18 and all rotating bodies.

The coaxial synchronous rotating components in the rotary viscous damper comprise a driving wheel 13, a rotating shaft 1, an end cover bearing 5, an inner supporting ring 16, a distance sleeve 15, an additional layer moving disc 10, a distance sleeve 14, a basic layer moving disc 9, a bottom supporting ring and an inner ring of a shell bearing 4.

The inner cavity of the shell 2 is processed with a spline groove 2.1, the outer side of the distance ring 6 is processed with a spline 6.1, the outer side of the base layer fixed disc 11 is processed with a spline 11.1, the outer side of the distance ring 8 is processed with a spline 8.1, the outer side of the base layer fixed disc 12 is processed with a spline 12.1, the outer side of the outer support ring 7 is processed with a spline 7.1, and the distance ring 6, the base layer fixed disc 11, the distance ring 8, the base layer fixed disc 12 and the outer support ring 7 are assembled with the shell 2 into a whole through a spline structure.

The middle section of rotation axis 1 has square shaft 1.1, and quad slit 9.1 is seted up at the center of basic layer driving disk 9, and quad slit 10.1 is seted up at the center of additional layer driving disk 10, and basic layer driving disk 9, distance cover 14, additional layer driving disk 10 and distance cover 15 assemble integratively through hole axle construction and rotation axis 1.

The working modes of the rotary viscous damper are as follows: major structure and drive wheel 13 power are connected, major structure warp or produce the displacement under the exogenic action, and transmit power for drive wheel 13 and make rotary motion, thereby transmission rotation axis 1, rotary motion is made under the transmission of rotation axis 1 to basic layer driving disk 9 and additional layer driving disk 10, damping liquid 19 provides the damping force under the rotatory shearing action of basic layer driving disk 9 and additional layer driving disk 10, the damping force transmits for drive wheel 13 through rotation axis 1, thereby play the weakening to major structure, offset the effect of exogenic action.

From the energy point of view, the rotary viscous damper rotates in the damping fluid 19 through the base layer disc 9 and the additional layer disc 10, and the damping fluid 19 absorbs part of kinetic energy and converts the kinetic energy into heat energy, so that the energy consumption effect is achieved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a rotatory viscous damper, includes casing and end cover, and the casing has the inner chamber, and the opening part assembly end cover of casing, casing and end cover insert the rotation axis, and outside the rotation axis worn out the end cover, the end installation drive wheel that stretches out of rotation axis, its characterized in that: the rotating shaft is sleeved with a movable disc, correspondingly, a fixed disc is sleeved in the inner cavity of the shell, and the fixed disc and the movable disc are arranged at intervals on the axis; damping fluid is filled in a damping space formed by the shell, the rotating shaft and the end cover; the fixed disc and the movable disc are soaked in damping liquid.

2. A rotary viscous damper of claim 1, wherein: the movable disc and the fixed disc form a damping layer in a set manner.

3. A rotary viscous damper of claim 2, wherein: the damping layer is composed of a movable disc and a fixed disc.

4. A rotary viscous damper of claim 2, wherein: the damping layer is composed of a movable disc and two fixed discs.

5. A rotary viscous damper of claim 2, wherein: the damping layer is composed of two movable disks and a fixed disk.

6. A rotary viscous damper according to claim 4 or 5, characterized in that: the damping layer has the multilayer, and adjacent damping layer shares driving disk or fixed plate.

7. A rotary viscous damper of claim 6, wherein: a distance sleeve is arranged between the adjacent movable disks and sleeved on the rotating shaft; and a distance ring is arranged between the adjacent fixed disks and sleeved in the inner cavity of the shell.

8. A rotary viscous damper of claim 7, wherein: the distance sleeve and the rotating shaft are assembled through a polygonal hole shaft structure; the distance ring and the inner cavity of the shell are assembled through a spline structure.

9. A rotary viscous damper of claim 1, wherein: the damping space is also provided with a filler which expands due to heat energy, and the filler is soaked in the damping liquid.