CN203257970U - Damping device for washing and dehydrating machine - Google Patents
Damping device for washing and dehydrating machine Download PDFInfo
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- CN203257970U CN203257970U CN 201320280161 CN201320280161U CN203257970U CN 203257970 U CN203257970 U CN 203257970U CN 201320280161 CN201320280161 CN 201320280161 CN 201320280161 U CN201320280161 U CN 201320280161U CN 203257970 U CN203257970 U CN 203257970U
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- cleaning
- squeezing machine
- damping spring
- washing
- damping
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Abstract
The utility model relates to a damping device for a washing and dehydrating machine, which is used for lowering the vibration amplitude of the washing and dehydrating machine in a working process. The damping device comprises a washing and dehydrating machine body, a damping spring and a damper, wherein the damping spring and the damper are connected onto the washing and dehydrating machine body; the damper is an automotive damper; the damping spring is a self-stiffness-adaptive damping spring, the inherent frequency of which can be adjusted automatically along with the change of the vibration excitation frequency of the washing and dehydrating machine body. By virtue of the damping device, the washing and dehydrating machine in the whole running process is free of possible off-center operation, and the requirement of lowering the vibration amplitude is met.
Description
Technical field
The utility model relates to a kind of damping device for cleaning/squeezing machine.Conformity for reducing cleaning/squeezing machine vibrations, assurance vibrations.
Background technique
At present, the suspension shock mitigation system of cleaning/squeezing machine can be reduced to the simple harmonic quantity that eccentric mass that material forms with inner cylinder rotating causes and be forced to vibrations, and its differential equation of motion is:
Wherein: the m shock mitigation system is supported weight kg;
m
0Eccentric mass kg;
C damping constant Ns/m;
K stiffness coefficient N/m;
R throw of eccentric m;
W excited frequency rad/s.
The transient silution of formula (1) is:
X＝Ae
-atsin(w
nt+ψ)+Bsin(wt+ψ) (2)
Wherein: w
nSystem frequency rad/s,
A damping coefficient a=C/2m
Can be found out by formula (2): exist with w
nWith w be the combination of frequency, through behind the certain hour, with w
nVibration disappearance for frequency.
So its steady state solution is:
X＝Bsin(wt+ψ) (3)
The amplitude of steady state solution is:
Wherein: Z frequency ratio, Z=w/w
n, optimum valuing range 3～5;
The ξ damping ratio, ξ=a/2m. optimum damping ratio scope ξ=0.05～0.2.
When the design cleaning/squeezing machine, yes wishes that amplitude B is the smaller the better in the different washing stages.Can be found out that by formula (4) in the certain situation of washing operating mode, amplitude B depends on the relation of excited frequency and natural frequency.
Wherein vibration damper one spring of core is then different different because of each producer's design concept the most, but it is the vibrations that single passive type lowers cleaning/squeezing machine that its principle can be described as, the vibrations of machine can only be under certain several state, reduced in other words, and the vibrations conformity of overall process can't be satisfied.
The size of vibration is the key index of weighing cleaning/squeezing machine performance quality.Vibrate bigger than normal, not only can acceleration spring and the fatigue of damping, and can badly influence life-span of water seal, bearing and other parts, serious also can cause personal injury and property loss.
At present, the suspension shock mitigation system of cleaning/squeezing machine employing all is to have adopted to decide rigid spring (elasticity coefficient k value is constant, is Hookean spring).But cleaning/squeezing machine is in concrete using process, and its washing operating mode is Protean.By the formula w=2n π of excited frequency/60, can find out because its washing, uniform, in take off and high difference of taking off rotating speed, cause the excited frequency of its different phase greatest differences to occur.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of damping device for cleaning/squeezing machine is provided, and adopts self adaption rigidity damping spring.Can be drawn by resonance principle, for obtaining more uniform vibrating effect, cleaning/squeezing machine should have different natural frequencys and adapt to the extraneous excited frequency that changes, thereby obtains more satisfactory vibrating effect; Single natural frequency then can not well satisfy different outer work condition.
By formula for natural frequency
Can draw: the cleaning/squeezing machine structure if expect the natural frequency of variation, then must make the k value of damping spring be variable, i.e. self adaption rigid spring (Universal Spring) in case after determining, its mass of vibration m fixes.To overcome the deficiency of known technology.
The purpose of this utility model is achieved in the following ways:
A kind of damping device for cleaning/squeezing machine, comprise cleaning/squeezing machine body, damping spring and damper, described damping spring and described damper are connected to described cleaning/squeezing machine body, it is characterized in that: described damper is automotive dampers, described damping spring is self adaption rigidity damping spring, and described self adaption rigidity damping spring can be along with the conversion of the excited frequency of described cleaning/squeezing machine body and the self-control natural frequency.
Described self adaption rigidity damping spring adopts the variable-pitch spring steel wire wound.
Described self adaption rigidity damping spring adopts and straightens the diameter spring steel wire wound.
Described self adaption rigidity damping spring adopts the variable-pitch spring steel wire and straightens the diameter spring steel wire wound.
Self adaption rigidity damping spring of the present utility model, adopt pitches or straighten the diameter spring steel wire wound, or adopt simultaneously the spring structure of two kinds of methods, can realize spring with the conversion of extraneous excited frequency the self-control natural frequency, thereby reach more consistent vibrating effect, the actual applying working condition of automatic washing off line be can well satisfy, thereby more satisfactory vibrating effect and the uniformity of vibration reached.Through experimental results show that, the k value of self adaption rigidity damping spring is in each operation process of cleaning/squeezing machine, along with the lifting of natural frequency also correspondingly promotes, and along with repetition test, make the change curve of the two basically identical, thereby fundamentally solved in the inconsistent situation of each operation phase amplitude of vibration of cleaning/squeezing machine, make cleaning/squeezing machine reach the damping effect of quite stable, reduced amplitude of vibration, noise, and the personal safety that has greatly prolonged the overall life of machine and promoted operator.
Description of drawings
Fig. 1 is the structural representation of the utility model the first embodiment.
Number in the figure:
1 cleaning/squeezing machine body; 2 damping springs; 3 dampers.
Embodiment
The below will be clearly and completely described the technological scheme in the utility model embodiment, and obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other mode of execution that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The first embodiment
As shown in Figure 1, the damping device that is used for cleaning/squeezing machine, comprise cleaning/squeezing machine body (1), self adaption rigidity damping spring (2) and automotive dampers (3), described damping spring (2) and described damper (3) are connected to described cleaning/squeezing machine body (1), and described self adaption rigidity damping spring (2) can be along with the conversion of the excited frequency of described cleaning/squeezing machine body (1) and the self-control natural frequency.Described self adaption rigidity damping spring (2) adopts the variable-pitch spring steel wire and straightens the diameter spring steel wire wound.
The technique effect that the utility model is obtained: in the inconsistent situation of each operation phase amplitude of vibration of cleaning/squeezing machine, make cleaning/squeezing machine reach the damping effect of quite stable, reduced amplitude of vibration, noise, and the personal safety that has greatly prolonged the overall life of machine and promoted operator.So that the technical quality of cleaning/squeezing machine is greatly improved.
Above-described embodiment; the purpose of this utility model, technological scheme and beneficial effect have been carried out further detailed description; institute is understood that; the above only is embodiment of the present utility model; be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. damping device that is used for cleaning/squeezing machine, comprise cleaning/squeezing machine body (1), damping spring (2) and damper (3), described damping spring (2) and described damper (3) are connected to described cleaning/squeezing machine body (1), it is characterized in that: described damper (3) is automotive dampers, described damping spring (2) is self adaption rigidity damping spring, and described self adaption rigidity damping spring can be along with the conversion of the excited frequency of described cleaning/squeezing machine body (1) and the self-control natural frequency.
2. a kind of damping device for cleaning/squeezing machine according to claim 1 is characterized in that: described self adaption rigidity damping spring employing variable-pitch spring steel wire wound.
3. a kind of damping device for cleaning/squeezing machine according to claim 1 is characterized in that: described self adaption rigidity damping spring adopts and straightens the diameter spring steel wire wound.
4. a kind of damping device for cleaning/squeezing machine according to claim 1 is characterized in that: described self adaption rigidity damping spring adopts the variable-pitch spring steel wire and straightens the diameter spring steel wire wound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320280161 CN203257970U (en) | 2013-05-22 | 2013-05-22 | Damping device for washing and dehydrating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320280161 CN203257970U (en) | 2013-05-22 | 2013-05-22 | Damping device for washing and dehydrating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257970U true CN203257970U (en) | 2013-10-30 |
Family
ID=49470536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320280161 Expired - Fee Related CN203257970U (en) | 2013-05-22 | 2013-05-22 | Damping device for washing and dehydrating machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257970U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283506A (en) * | 2015-05-29 | 2017-01-04 | 无锡小天鹅股份有限公司 | Washing machine |
| CN110354593A (en) * | 2019-06-27 | 2019-10-22 | 三一重机有限公司 | A kind of automatically cleaning dust-extraction unit and vehicle |
-
2013
- 2013-05-22 CN CN 201320280161 patent/CN203257970U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283506A (en) * | 2015-05-29 | 2017-01-04 | 无锡小天鹅股份有限公司 | Washing machine |
| CN110354593A (en) * | 2019-06-27 | 2019-10-22 | 三一重机有限公司 | A kind of automatically cleaning dust-extraction unit and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20140522 |