CN85204260U - Damper of high-speed single-cylinder diesel engine - Google Patents
Damper of high-speed single-cylinder diesel engine Download PDFInfo
- Publication number
- CN85204260U CN85204260U CN 85204260 CN85204260U CN85204260U CN 85204260 U CN85204260 U CN 85204260U CN 85204260 CN85204260 CN 85204260 CN 85204260 U CN85204260 U CN 85204260U CN 85204260 U CN85204260 U CN 85204260U
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- vibration
- diesel engine
- equal
- trunnion shaft
- unbalance
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- 238000013016 damping Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 abstract description 2
- 230000001133 acceleration Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 238000005304 joining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000027697 autoimmune lymphoproliferative syndrome due to CTLA4 haploinsuffiency Diseases 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a single shaft damping device of a single cylinder diesel. After a back rotating balance is satisfied, a crankshaft balancing block is additionally provided with an unbalance moment 1/2m-[B] R. A balance shaft is additionally arranged under the crankshaft, and the unbalance moment of the balance shaft is also equal to 1/2m-[B] R. Because rotation speeds of the two unbalance moments are equal, and the rotating directions are opposite, the sum of the vertical component of the centrifugal force is equal to zero. Moreover, the sum of horizontal components is equal to the value of m-[b] omega + [2]cos theta. The directions of the horizontal components are always opposite to the direction of the piston motion. Therefore, the effect of vibration damping is obtained. An R175 model damping prototype is tested on a motor tricycle. When the rotation speed of a diesel engine is rated, the vibration of the carriage can be reduced to 15% of the original vibration. When the rotation speed is strengthened, the vibration can be reduced to 39% of the original vibration.
Description
The utility model is a kind of single cylinder diesel vibration damping equipment of uniaxiality balance, is applicable to the transformation to the high speed single cylinder diesel engine, and adopts for the diesel engine artificer.
About the situation of prior art, according to the diesel engine catalogue of publishing recently, the single cylinder engine of domestic uniaxiality balance has only two kinds on 185 types and X195 type.The trunnion shaft eccentric moment of 185 types has only 1.87 kilograms-centimetre, and the product of reciprocating mass and crank pin radius is 6.07 kilograms-centimetre; Aspect the bent axle composition, also just Dan Chun De rotation changes balance.So this machine is little to the counterbalance effect of reciprocal inertia force, and will produce vertical vibration during operation.As for the vibration damping structure of X195 type, according to introducing in the Yang Liansheng of Jilin University chief editor " internal combustion (IC) Engine Design ", the balanced measure of this machine is made up of fan-shaped equilibrium block in the gear chamber and the unbalance mass, on the flywheel.Because fan-shaped equilibrium block is opposite with turning to of flywheel, these two unbalance mass,s are in the both sides of body again respectively, so this machine except that the position of last lower dead centre, will produce rocking vibration.And this device was because the unbalanced force distance of trunnion shaft and bent axle had both equated symmetry, so diesel engine has just been avoided above-mentioned vibration when turning round.
The utility model is realized according to following principle:
(1) crankshaft counter balance is on the basis of satisfying Chai You Ji rotation commentaries on classics balance, and additional more suitable quality makes bent axle produce another unbalance moment, and its value equals 1/2 m
BR.(in the accompanying drawing 1, m
AThe rotation of Weiing is transported kinoplaszm amount, m
BBe reciprocating mass, R is that Qu Bing Xiao rotation changes radius; All the other are the equivalent of EQUILIBRIUM CALCULATION FOR PROCESS, and its pass is m
A' R '=m
AR and 1/2 m
B' R '=1/2 m
B" R "=1/2 m
BR.）
(2) (horizontal machine) installs a trunnion shaft additional below bent axle, and its rotating speed is identical with bent axle, and switched in opposite.The eccentric mass of trunnion shaft passes through between two equilibrium blocks of bent axle when rotating, and (please read accompanying drawing 2) its unbalance moment also equals 1/2 m
BR.
Vibration damping equipment is made up of above-mentioned two unbalance moments.When diesel engine turned round, these two unbalance moments just produced centrifugal force, and when upper dead center and lower dead centre, the sensing of these two centrifugal force is identical, again because of its rotating speed equates switched in opposite, so the vertical stress component sum of these two centrifugal force equals zero; And the horizontal component sum equals m
BR ω
2COS θ (one-level reciprocal inertia force).The direction of this horizontal component is opposite with the piston motion direction all the time, thereby obtains effectiveness in vibration suppression.
The structure of this device please be read accompanying drawing 2, and a is a trunnion shaft among the figure; B is a crankshaft counter balance; C is the driving gear between trunnion shaft and the bent axle.The number of teeth of this a pair of gear equates, the switched in opposite so its rotating speed is identical; Simultaneously, this is to gear meshing, when piston during at upper dead center, must make the eccentric mass and the same direction of crankshaft counter balance of trunnion shaft.When this device was tried out on the R175 diesel engine, the stage casing of trunnion shaft was semicircular, and eccentric mass also is semicircular (accompanying drawing 1).In fact, as long as unbalance moment meets the requirements, the shape of trunnion shaft can be according to the actual conditions decision of joining diesel engine.
This device is on probation on the R175 diesel engine, and effectiveness in vibration suppression is tangible.(please read annex: the oscillating curve of Fujian Province Central Inspect Station) process of the test is such: the R175 type model machine and the prototype R175 machine of vibration damping successively are installed on the same chassis of motor tricycle, progressively improve diesel engine speed, measure the vibration acceleration at each position of motor tricycle respectively.Now getting at 2 from the vertical vibration curve of compartment left side (taking the position) observes: when diesel engine rated speed 2200 rev/mins (5PS), the vibration acceleration of vibration damping machine and prototype is respectively 13 meter per seconds
2With 86 meter per seconds
2When strengthening rotating speed 2600 rev/mins (6PS), vibration acceleration is respectively 55 meter per seconds
2With 140 meter per seconds
2Be after the R175 diesel engine is loaded onto vibration damping equipment, the vibration that motor tricycle is taken the position can drop to original 15% and 39%.
When this device was transformed the single cylinder diesel of vibration damping not, the high size of body length and width was constant fully, and therefore profiles such as the water tank fuel tank equipment to original supporting is also constant fully.New body adds only increases the operation of warding off the balance shaft bearing hole man-hour.Producing in enormous quantities, before new special boring mill was not finished, original technological equipment was suitable fully.When this device is transformed the R175 diesel engine,,, but do not influence the high size of the original length and width of body so gear chamber top and right side respectively enlarge 10 millimeters because of the trunnion shaft driving gear is big slightly than crankshaft timing gear.Aspect weight, the trunnion shaft of joining the R175 type weighs 935 grams, and 2 kilograms of total weightening finishes are about 4% of prototype, take a broad view of the premises, and this device effectiveness in vibration suppression is obvious, and is simple in structure, and cost of production is than much lower with double-shaft balance.
Claims (1)
- A kind of high speed single cylinder diesel engine vibration damping equipment of forming by a pair of unbalance moment, it is characterized in that below bent axle, installing additional a trunnion shaft [a], gear [c] engagement driving that bent axle and trunnion shaft [a] are equated by a pair of number of teeth, the eccentric mass of trunnion shaft [a] passes through between two equilibrium blocks [b] of bent axle when rotating, crankshaft counter balance [b] has additional unbalance moment 1/2 mBR, and the unbalance moment of trunnion shaft [a] also equals 1/2 mBR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85204260 CN85204260U (en) | 1985-10-08 | 1985-10-08 | Damper of high-speed single-cylinder diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85204260 CN85204260U (en) | 1985-10-08 | 1985-10-08 | Damper of high-speed single-cylinder diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85204260U true CN85204260U (en) | 1987-11-07 |
Family
ID=4799613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85204260 Withdrawn CN85204260U (en) | 1985-10-08 | 1985-10-08 | Damper of high-speed single-cylinder diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85204260U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073676C (en) * | 1996-04-04 | 2001-10-24 | 曼B与W狄赛尔公司 | Inertial force balancing device |
| CN101042170B (en) * | 2006-03-22 | 2010-05-12 | 朱心平 | Vibration damping method for piston engine |
| CN101655152B (en) * | 2009-06-10 | 2011-09-28 | 北京中清能发动机技术有限公司 | Single action piston for crank round sliding block mechanism as well as internal-combustion engine and compressor thereof |
| WO2012010020A1 (en) * | 2010-07-21 | 2012-01-26 | 湖南三一智能控制设备有限公司 | Shock-absorbing device for cantilever crane system, cantilever crane system and pumping machine |
| CN103925333A (en) * | 2013-01-16 | 2014-07-16 | 福特环球技术公司 | Pendulum-absorber Brake |
| RU2798630C1 (en) * | 2022-06-27 | 2023-06-23 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный морской технический университет" (СПбГМТУ) | Stand for evaluating the efficiency of elastic connections of the diesel generator shock absorption system |
-
1985
- 1985-10-08 CN CN 85204260 patent/CN85204260U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073676C (en) * | 1996-04-04 | 2001-10-24 | 曼B与W狄赛尔公司 | Inertial force balancing device |
| CN101042170B (en) * | 2006-03-22 | 2010-05-12 | 朱心平 | Vibration damping method for piston engine |
| CN101655152B (en) * | 2009-06-10 | 2011-09-28 | 北京中清能发动机技术有限公司 | Single action piston for crank round sliding block mechanism as well as internal-combustion engine and compressor thereof |
| WO2012010020A1 (en) * | 2010-07-21 | 2012-01-26 | 湖南三一智能控制设备有限公司 | Shock-absorbing device for cantilever crane system, cantilever crane system and pumping machine |
| CN103925333A (en) * | 2013-01-16 | 2014-07-16 | 福特环球技术公司 | Pendulum-absorber Brake |
| CN103925333B (en) * | 2013-01-16 | 2017-10-27 | 福特环球技术公司 | pendulum damper brake |
| RU2798630C1 (en) * | 2022-06-27 | 2023-06-23 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный морской технический университет" (СПбГМТУ) | Stand for evaluating the efficiency of elastic connections of the diesel generator shock absorption system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |