CN109139795B - Damper and testing machine with same - Google Patents
Damper and testing machine with same Download PDFInfo
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- CN109139795B CN109139795B CN201811281569.4A CN201811281569A CN109139795B CN 109139795 B CN109139795 B CN 109139795B CN 201811281569 A CN201811281569 A CN 201811281569A CN 109139795 B CN109139795 B CN 109139795B
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- vibrator
- damper
- oil
- vibration damping
- shell
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- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000013016 damping Methods 0.000 claims abstract description 32
- 238000009434 installation Methods 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 23
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/124—Elastomeric springs
- F16F15/1245—Elastic elements arranged between substantially-radial walls of two parts rotatable with respect to each other, e.g. between engaging teeth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/16—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material
- F16F15/165—Sealing arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a damper and a testing machine with the same, wherein the damper comprises: the shell is used for the core rod to pass through; the first vibrator is arranged in the shell and is used for being sleeved on the outer side of the core rod; the second vibrator is arranged in the shell and is used for being sleeved on the outer side of the first vibrator; and the first vibration damping part is arranged between the first vibrator and the second vibrator to reduce vibration caused by the core bar. The damper solves the problem that the damper in the prior art cannot meet the requirement of the overspeed testing machine on vibration reduction.
Description
Technical Field
The invention relates to the field of testing, in particular to a damper and a testing machine with the damper.
Background
In the test of measuring rotor slew velocity, because the slew velocity of test piece is higher, in addition the reason such as own laboratory glassware or test piece processing arouses the vibration of test piece easily, thereby lead to the strong vibration of entire system, this kind of strong vibration can make equipment can't be tested, damage equipment even, generally adopt devices such as attenuator to slow down and absorb the vibration of equipment among the existing equipment, but the attenuator of existing equipment is inhaled the vibration effect not good, and influence the slew velocity of test piece, the power consumption, can only adapt to the vibration that causes at lower speed rotation, when the test piece slew velocity is great, current attenuator can't satisfy the damping and the consumption reduction requirement of equipment.
Disclosure of Invention
The invention mainly aims to provide a damper and a testing machine with the same, and aims to solve the problem that the damper in the prior art cannot meet the requirement of vibration reduction of an overspeed testing machine.
In order to achieve the above object, according to one aspect of the present invention, there is provided a damper including: the shell is used for the core rod to pass through; the first vibrator is arranged in the shell and is used for being sleeved on the outer side of the core rod; the second vibrator is arranged in the shell and is used for being sleeved on the outer side of the first vibrator; and the first vibration damping part is arranged between the first vibrator and the second vibrator to reduce vibration caused by the core bar.
Furthermore, an oil inlet interface is arranged on the shell, and the first vibration reduction part is a vibration reduction oil film, so that oil enters the shell from the oil inlet interface to supply oil to the first vibration reduction part.
Furthermore, an oil through hole is formed in the second vibrator, so that oil enters the shell from the oil inlet interface and flows into the space between the first vibrator and the second vibrator through the oil through hole to form a vibration damping oil film.
Further, the damper further includes: and the sealing assembly is arranged between the first vibrator and the second vibrator to form a sealing space for sealing oil.
Further, the seal assembly includes: the first sealing ring is arranged at one end of the first vibrator; the second sealing ring is arranged at the other end of the first vibrator; the first sealing ring, the first vibrator, the second sealing ring and the second vibrator are connected to form a sealing space.
Further, be equipped with first mounting groove and second mounting groove on the first oscillator, first sealing washer sets up on first mounting groove, and the second sealing washer sets up on the second mounting groove.
Further, the damper further includes: and a second vibration damping portion disposed between the second vibrator and the case to reduce vibration caused by the core bar.
Further, the second vibration damping portion is a rubber member.
Further, the second oscillator includes first installation department and second installation department, and rubber component includes a plurality of rubber circles, and a plurality of rubber circles include: the first rubber ring component is arranged on the first mounting part; the second rubber ring component is arranged on the second mounting part; wherein, first rubber circle subassembly and second rubber circle subassembly set up on the second oscillator.
Furthermore, a first installation step and a second installation step are arranged on the second vibrator, the first installation step and the second installation step are arranged on the outer wall of the second vibrator at intervals, the first installation part is arranged between the first installation step and the second installation step, and the second installation part is arranged on one side, far away from the first installation step, of the second installation step.
According to another aspect of the present invention, there is provided a testing machine comprising a damper and a speed adjusting device, wherein the speed adjusting device is used for adjusting the rotation speed of the core rod, the damper is used for reducing the vibration of the core rod, and the damper is the above damper.
The damper can be applied to an overspeed testing machine and is used for slowing down the vibration generated by the core bar, the damper comprises a shell, a first vibrator and a second vibrator, the first vibrator is of a cylindrical structure and is sleeved on the outer side of the core bar so as to reduce the vibration caused by the rotation of the core bar, the second vibrator is arranged on the outer side of the first vibrator, a first vibration damping part is arranged between the second vibrator and the first vibrator so as to specially reduce the vibration transmission between the first vibrator and the second vibrator, and the damper disclosed by the invention can meet the vibration reduction requirement of the overspeed testing machine by arranging the first vibrator, the second vibrator and the first vibration damping part layer by layer on the lower core bar.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic structural view of an embodiment of a damper according to the present invention;
FIG. 2 shows a top view of an embodiment of the damper of the present invention;
FIG. 3 shows a cross-sectional view A-A of the damper embodiment of FIG. 2 of the present invention;
fig. 4 shows a schematic view of a first vibrator embodiment of the present invention;
fig. 5 shows a cross-sectional view of a first vibrator embodiment of the present invention;
fig. 6 shows a schematic view of a second vibrator embodiment of the present invention;
fig. 7 shows a cross-sectional view of a second vibrator embodiment of the present invention.
Wherein the figures include the following reference numerals:
20. a damper; 22. a first vibrator; 222. a first seal ring; 223. a second seal ring; 224. a first mounting groove; 225. a second mounting groove; 23. a second vibrator; 233. an oil through hole; 234. a first mounting step; 235. a second mounting step; 24. a housing; 241. an oil inlet interface; 26. a first vibration damping portion; 27. a second vibration damping portion; 272. a first rubber ring assembly; 273. and a second rubber ring component.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The present invention provides a damper, please refer to fig. 1 to 7, including: a shell 24 for passing the core rod; the first vibrator 22 is arranged in the shell 24, and the first vibrator 22 is used for being sleeved on the outer side of the core rod; the second vibrator 23 is arranged in the shell 24, and the second vibrator 23 is used for being sleeved on the outer side of the first vibrator 22; and a first vibration damping portion 26, the first vibration damping portion 26 being disposed between the first vibrator 22 and the second vibrator 23 to reduce vibration caused by the core bar.
The damper 20 can be applied to an overspeed tester and is used for damping vibration generated by a core bar, the damper 20 comprises a shell 24, a first vibrator 22 and a second vibrator 23, the first vibrator 22 is of a cylindrical structure and is sleeved on the outer side of the core bar so as to reduce vibration caused by rotation of the core bar, the second vibrator 23 is arranged on the outer side of the first vibrator 22, and a first vibration damping part 26 is arranged between the second vibrator 23 and the first vibrator 22 so as to specially reduce vibration transmission between the first vibrator 22 and the second vibrator 23.
An oil inlet interface 241 is arranged on the shell 24, and the first vibration damping portion 26 is a vibration damping oil film, so that oil enters the shell 24 from the oil inlet interface 241 to supply oil to the first vibration damping portion 26.
As shown in fig. 3, in this embodiment, an oil inlet interface 241 is arranged on the housing 24 of the damper, the first vibration damping portion 26 is specifically a vibration damping oil film, the oil film is an oil film with a certain pressure, and the specific pressure is adjustable according to the requirement of the rotating speed.
An oil through hole 233 is formed in the second vibrator 23, so that oil enters the housing 24 through the oil inlet 241 and flows into a space between the first vibrator 22 and the second vibrator 23 through the oil through hole 233 to form a vibration damping oil film.
As shown in fig. 3, the second vibrator 23 in this embodiment is further provided with an oil through hole 233, and oil enters the housing through the oil through hole 233 from an oil inlet interface 241 on the housing 24 and enters between the second vibrator 23 and the first vibrator 22 to form an oil film with a certain pressure, so as to reduce vibration.
The damper further includes: and a sealing assembly disposed between the first vibrator 22 and the second vibrator 23 to form a sealed space for sealing oil. The seal assembly includes: a first seal ring 222, the first seal ring 222 being provided at one end of the first vibrator 22; a second seal ring 223, the second seal ring 223 being provided at the other end of the first vibrator 22; wherein the first seal ring 222, the first vibrator 22, the second seal ring 223, and the second vibrator 23 are connected to form a sealed space. The first vibrator 22 is provided with a first mounting groove 224 and a second mounting groove 225, the first seal ring 222 is disposed on the first mounting groove 224, and the second seal ring 223 is disposed on the second mounting groove 225.
As shown in fig. 3 to 5, in the present embodiment, in order to form an oil film between the first vibrator 22 and the second vibrator 23, a sealing assembly is further disposed between the first vibrator 22 and the second vibrator 23, the sealing assembly specifically includes a first sealing ring 222 and a second sealing ring 223, a space for sealing the oil film is defined between the first sealing ring 222, the second sealing ring 223, and the first vibrator 22 and the second vibrator 23, two annular mounting grooves, a first mounting groove 224 and a second mounting groove 225, are respectively disposed at two ends of the first vibrator 22, and the first sealing ring 222 is disposed in the first mounting groove 224 and the second sealing ring 223 is disposed in the second mounting groove 225.
The damper further includes: and a second vibration attenuating portion 27, the second vibration attenuating portion 27 being disposed between the second vibrator 23 and the case 24 to reduce vibration caused by the core bar. The second vibration attenuating portion 27 is a rubber member.
As shown in fig. 3, the damper 20 of the present embodiment is further provided with a second vibration reduction portion 27, and the second vibration reduction portion 27 adopts physical vibration reduction, and is made of elastic material rubber.
The second vibrator 23 includes first installation department and second installation department, and rubber component includes a plurality of rubber rings, and a plurality of rubber rings include: a first rubber ring member 272, the first rubber ring member 272 being provided on the first mounting portion; a second rubber ring member 273, the second rubber ring member 273 being provided on the second mounting portion; wherein the first rubber ring member 272 and the second rubber ring member 273 are provided on the second vibrator 23. The second vibrator 23 is provided with a first mounting step 234 and a second mounting step 235, the first mounting step 234 and the second mounting step 235 are arranged on the outer wall of the second vibrator 23 at intervals, the first mounting portion is arranged between the first mounting step 234 and the second mounting step 235, and the second mounting portion is arranged on one side of the second mounting step 235 far away from the first mounting step 234.
In order to facilitate installation of the second vibration damping portion 27 in this embodiment, a first installation portion and a second installation portion are provided on the second vibrator 23, specifically, an annular first installation step 234 is provided at one end of an outer wall of the second vibrator 23, an annular second installation step 235 is provided in the middle of the outer wall of the second vibrator 23, the first rubber ring component 272 is provided on the first installation portion surrounded by the first installation step 234 and the second installation step 235, and the second rubber ring component 273 is provided on the second installation portion on the side of the second installation step 235 far away from the first installation step 234.
The invention also provides a testing machine, which comprises a damper 20 and a speed regulating device, wherein the speed regulating device is used for regulating the rotating speed of the core rod, the damper 20 is used for reducing the vibration of the core rod, and the damper 20 is the damper.
The invention also provides an overspeed testing machine which comprises the damper 20 and a speed regulating device, wherein the speed regulating device comprises a core rod, the core rod drives the impeller to rotate, and the damper 20 is arranged on the outer side of the core rod and used for reducing the vibration of the core rod.
In addition, a plurality of oil inlet ports can be arranged to supply oil to the shell simultaneously, and a plurality of oil through ports can be arranged to convey oil into the oil film in time.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the damper 20 can be applied to an overspeed tester and is used for damping vibration generated by a core bar, the damper 20 comprises a shell 24, a first vibrator 22 and a second vibrator 23, the first vibrator 22 is of a cylindrical structure and is sleeved on the outer side of the core bar so as to reduce vibration caused by rotation of the core bar, the second vibrator 23 is arranged on the outer side of the first vibrator 22, and a first vibration damping part 26 is arranged between the second vibrator 23 and the first vibrator 22 so as to specially reduce vibration transmission between the first vibrator 22 and the second vibrator 23.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A damper, comprising:
a housing (24) for the core rod to pass through;
the first vibrator (22), the first vibrator (22) is arranged in the shell (24), and the first vibrator (22) is used for being sleeved on the outer side of the core rod;
the second vibrator (23) is arranged in the shell (24), and the second vibrator (23) is sleeved on the outer side of the first vibrator (22);
a first vibration damping portion (26), the first vibration damping portion (26) being provided between the first vibrator (22) and the second vibrator (23) to reduce vibration caused by the core bar;
an oil inlet interface (241) is arranged on the shell (24), and the first vibration damping part (26) is a vibration damping oil film, so that oil enters the shell (24) from the oil inlet interface (241) to supply oil to the first vibration damping part (26);
an oil through hole (233) is formed in the second vibrator (23), so that oil enters the shell (24) from the oil inlet interface (241) and flows into a space between the first vibrator (22) and the second vibrator (23) through the oil through hole (233) to form a vibration damping oil film;
the damper further includes: a second vibration damping portion (27), the second vibration damping portion (27) being provided between the second vibrator (23) and the case (24) to reduce vibration caused by the core bar;
the second vibration damping part (27) is a rubber component;
the second oscillator (23) includes first installation department and second installation department, rubber component includes a plurality of rubber rings, and is a plurality of the rubber ring includes: a first rubber ring member (272), the first rubber ring member (272) being disposed on the first mounting portion; a second rubber ring member (273), the second rubber ring member (273) being provided on the second mounting portion; wherein the first rubber ring component (272) and the second rubber ring component (273) are provided on the second vibrator (23);
be equipped with first installation step (234) and second installation step (235) on second oscillator (23), first installation step (234) with second installation step (235) set up with the interval on second oscillator (23) outer wall, first installation department sets up first installation step (234) with between second installation step (235), the second installation department sets up second installation step (235) are kept away from one side of first installation step (234).
2. The damper of claim 1, further comprising:
a sealing assembly disposed between the first vibrator (22) and the second vibrator (23) to form a sealed space for sealing oil.
3. The damper of claim 2, wherein the seal assembly comprises:
a first seal ring (222), wherein the first seal ring (222) is arranged at one end of the first vibrator (22);
a second seal ring (223), wherein the second seal ring (223) is arranged at the other end of the first vibrator (22);
wherein the first seal ring (222), the first vibrator (22), the second seal ring (223), and the second vibrator (23) are connected to form the sealed space.
4. The damper according to claim 3, wherein the first vibrator (22) is provided with a first mounting groove (224) and a second mounting groove (225), the first seal ring (222) is disposed on the first mounting groove (224), and the second seal ring (223) is disposed on the second mounting groove (225).
5. A testing machine comprising a damper (20) and a speed regulation device for regulating the rotational speed of a core rod, said damper (20) being adapted to reduce the vibrations of said core rod, characterized in that said damper (20) is a damper according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811281569.4A CN109139795B (en) | 2018-10-23 | 2018-10-23 | Damper and testing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811281569.4A CN109139795B (en) | 2018-10-23 | 2018-10-23 | Damper and testing machine with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109139795A CN109139795A (en) | 2019-01-04 |
| CN109139795B true CN109139795B (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811281569.4A Active CN109139795B (en) | 2018-10-23 | 2018-10-23 | Damper and testing machine with same |
Country Status (1)
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| CN (1) | CN109139795B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4694391B2 (en) * | 2006-03-14 | 2011-06-08 | 株式会社奥村組 | Seismic isolation facility |
| CN102927196B (en) * | 2012-11-05 | 2014-11-19 | 中国船舶重工集团公司第七〇五研究所 | Extrusion oil film damper running synchronously with propulsion shaft system |
| CN203443774U (en) * | 2013-08-27 | 2014-02-19 | 杭州海罗马科技有限公司 | High-speed rotation testing machine |
| CN103604587A (en) * | 2013-08-27 | 2014-02-26 | 杭州海罗马科技有限公司 | High-speed rotation testing machine and method for testing high-speed rotation strength performance of rotor |
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2018
- 2018-10-23 CN CN201811281569.4A patent/CN109139795B/en active Active
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| CN109139795A (en) | 2019-01-04 |
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