CN104002824B - Locomotive diesel common base of generating set and method of designing thereof - Google Patents
Locomotive diesel common base of generating set and method of designing thereof Download PDFInfo
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- CN104002824B CN104002824B CN201410229145.9A CN201410229145A CN104002824B CN 104002824 B CN104002824 B CN 104002824B CN 201410229145 A CN201410229145 A CN 201410229145A CN 104002824 B CN104002824 B CN 104002824B
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Abstract
Locomotive diesel common base of generating set of the present invention and method of designing, be provided in condition under, according to certain correlativity, system, diesel powerplant public base is reasonably made to meet N=(Q+q) × g/T, the relation of M × Z/E × I≤∑ max and H-A-B-10 < Z < H-A-10, N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator, Z-public base depth of section value, E-public base elasticity inertia, I-public base cross section inertia, M-public base section turn moment, the maximum stress that ∑ max-unit produces, H-be locomotive installation diesel powerplant space minimum constructive height, A-diesel engine base attachment face is to diesel engine vertex height, the maximum compressibility of B-vibration isolator.The vibrations that actv. causes when reducing main unit operation, make the vibrations of locomotive cab greatly reduce, improve the working environment of driver's cab, for locomotive smooth operation provides further reliable guarantee.
Description
Technical field
The present invention relates to a kind of locomotive diesel common base of generating set and method of designing thereof, belong to railway locomotive technical field.
Background technology
Diesel powerplant as diesel locomotive propulsion source is formed by diesel engine and generator combination, in order to reduce the vibration of unit, usually by units' installation on the rigidity public base of bottom with some shock absorbers, form an entirety.But due to the restriction by car body arrangement space and Locomotive Axle Load, for quality and all very large high-power diesel generating set of volume, the scheme of design engineers gives up public base often simply, is directly placed on locomotive underframe by diesel powerplant, is rigidly connected with locomotive underframe.Although can adopt elastic vibration isolation design at driver's cab underframe, during locomotive operation, driver's cab still has comparatively big bang, and in locomotive, miscellaneous part also can be damaged due to the long-term vibration of diesel powerplant simultaneously, has a strong impact on the reliability of locomotive.
Summary of the invention
Object of the present invention overcomes the deficiency of above-mentioned prior art exactly, provides a kind of locomotive diesel common base of generating set and method of designing thereof.
The object of the present invention is achieved like this: a kind of locomotive diesel common base of generating set method of designing, it is characterized in that: meet N=(Q+q) × g/T, the relation of M × Z/E × I≤∑ max and H-A-B-10 < Z < H-A-10 decides each factor of locomotive diesel common base of generating set, in formula: N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator, Z-public base depth of section value, E-public base elasticity inertia, I-public base cross section inertia, M-public base section turn moment, the maximum stress that ∑ max-unit produces, H-be locomotive installation diesel powerplant space minimum constructive height, A-diesel engine base attachment face is to diesel engine vertex height, the maximum compressibility of B-vibration isolator, in formula, each height unit is millimeter.
A kind of locomotive diesel common base of generating set, it is characterized in that: its each factor meets N=(Q+q) × g/T, the relation of M × Z/E × I≤∑ max and H-A-B-10 < Z < H-A-10, in formula: N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator, Z-public base depth of section value, E-public base elasticity inertia, I-public base cross section inertia, M-public base section turn moment, the maximum stress that ∑ max-unit produces, H-be locomotive installation diesel powerplant space minimum constructive height, A-diesel engine base attachment face is to diesel engine vertex height, the maximum compressibility of B-vibration isolator, in formula, each height unit is millimeter.
The solution of the present invention, be provided in condition under, according to certain correlativity, system, reasonably have selected the construction parameter of locomotive diesel common base of generating set, the vibrations caused when effectively reducing main unit operation, the vibrations of locomotive cab are reduced greatly, improves the working environment of driver's cab, for locomotive smooth operation provides further reliable guarantee.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the embodiment of the present invention.
Fig. 2 is the I point enlarged diagram in Fig. 1.
Be labeled as in figure: 1-electrical generator, 2-diesel engine, 3-public base, 4-vibration isolator, 5-locomotive car body base plate.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Referring to accompanying drawing, the locomotive of the present embodiment is 4400 horsepower of 6 axle locomotive, and the safety load-bearing of each axle requires to be 23 × 9.8KN, nearly 30 tons of its diesel powerplant quality, consider the quality of miscellaneous equipment on locomotive, the quality be assigned on public base can not be greater than 3.6 tons.Diesel engine base attachment face is 3210mm to diesel engine vertex height, and diesel powerplant space minimum constructive height installed by locomotive is 3720mm.
1, vibration isolator quantity N and position is determined.
Using formula: N=(Q+q) × g/T
N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator.
Rated load is selected to be 30KN vibration isolator, then
N＝(Q+q)×g/T＝(30+3.6)×9.8/30＝10.97≈10
Because 3.6 tons is the biggest qualities of public base permission, and vibration isolator quantity should be even number, still to choose vibration isolator quantity be 10.
The position of vibration isolator, according to the center of gravity of unit, take center of gravity as benchmark, and both sides are similar to the equal location arrangements vibration isolator of moment, and the layout of vibration isolator is meeting location arrangements larger at public base stress under the equal prerequisite of relative CG moment as far as possible.
2, use the commercial software ANSYS12.1 of ANSYS company exploitation, the effect of stress produced public base under being calculated as follows several operating mode, namely to the requirement of strength of public base.
(1) 1g vertical (constraint of vibration isolator lower end)
(2) vertical+1.5g of 1g is just horizontal
(3) vertical+1.5g of 1g is laterally negative
(4) vertical+3g of 1g is just longitudinal
(5) vertical+3g of 1g is longitudinally negative
(6) 2g is vertical
(7) 1g vertical+moment of torsion 33000*1.5N.m
(8) diesel engine assembling overview (1g is vertical for the constraint of base lower plane)
(9) integral lifting operating mode
Result of calculation is as following table:
Result of calculation shows: under 9 computational analysis operating modes, and maximum stress ∑ max is 230MPa, and its safety factor is 1.5.Bent axle sail angle is 0.002284 degree, is less than the requirement of 0.0166 degree of permission.
3. determine the height of public base.
Diesel engine base attachment face is A=3210mm to diesel engine vertex height, and diesel powerplant space minimum constructive height installed by locomotive is H=3720mm.Select the maximum compressibility B=12mm of vibration isolator, then the scope of the actual compression amount L of vibration isolator is 0 < L < B.When vibration isolator reaches maximum compressibility, for when avoiding unit operation, public base and locomotive car body ground connect mill, require that vibration isolator bottom surface attachment face and public base basal spacing are at least 10mm, namely vibration isolator is arranged on public base, vibration isolator bottom surface attachment face 10mm at least lower than public base bottom surface, therefore has following formula
H＝A+Z+(B-L)+10
Under the prerequisite that guarantee public base quality is not more than 3.6 tons and H-A-B-10 < Z < H-A-10, choose different Z values, namely corresponding public base elasticity inertia E, cross section inertia I and section turn moment M is had, using formula M × Z/E × I=∑ carries out tentative calculation, draw the stress that different public base intensity can be born, therefrom selected suitable public base depth of section value.
H=3720mm, A=3210mm, B=12mm are substituted into H-A-B-10 < Z < H-A-10, obtain 485mm < Z < 500mm.
Choose Z1=500mm, Z2=485mm, Z3=495mm, Z4=490mm, Z5=488mm, calculate the stress that public base intensity can be born respectively:
| Z(mm) | 500 | 485 | 495 | 490 | 488 |
| ∑(Mpa) | 265 | 223 | 246 | 235 | 230 |
Z=488mm is more rational public base height.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (2)
1. a locomotive diesel common base of generating set method of designing, it is characterized in that: meet N=(Q+q) × g/T, the relation of M × Z/E × I≤∑ max and H-A-B-10 < Z < H-A-10 decides each factor of locomotive diesel common base of generating set, in formula: N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator, Z-public base depth of section value, E-public base elasticity inertia, I-public base cross section inertia, M-public base section turn moment, the maximum stress that ∑ max-unit produces, H-be locomotive installation diesel powerplant space minimum constructive height, A-diesel engine base attachment face is to diesel engine vertex height, the maximum compressibility of B-vibration isolator, in formula, each height unit is millimeter.
2. a locomotive diesel common base of generating set, it is characterized in that: its each factor meets N=(Q+q) × g/T, the relation of M × Z/E × I≤∑ max and H-A-B-10 < Z < H-A-10, in formula: N-vibration isolator number, Q-unit quality, q-public base quality, g-acceleration due to gravity, the rated load of T-vibration isolator, Z-public base depth of section value, E-public base elasticity inertia, I-public base cross section inertia, M-public base section turn moment, the maximum stress that ∑ max-unit produces, H-be locomotive installation diesel powerplant space minimum constructive height, A-diesel engine base attachment face is to diesel engine vertex height, the maximum compressibility of B-vibration isolator, in formula, each height unit is millimeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410229145.9A CN104002824B (en) | 2014-05-27 | 2014-05-27 | Locomotive diesel common base of generating set and method of designing thereof |
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| CN201410229145.9A CN104002824B (en) | 2014-05-27 | 2014-05-27 | Locomotive diesel common base of generating set and method of designing thereof |
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| CN104002824B true CN104002824B (en) | 2016-04-27 |
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| CN107577848B (en) * | 2017-08-09 | 2020-11-17 | 中车大连机车车辆有限公司 | Locomotive diesel generator set vibration isolator mounting and connecting pair and design method |
Citations (3)
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|---|---|---|---|---|
| CN202055915U (en) * | 2010-07-23 | 2011-11-30 | 广州威能机电有限公司 | Environmentally-friendly ultra-quiet type diesel generator set |
| CN202327538U (en) * | 2011-11-30 | 2012-07-11 | 重庆潍柴发动机厂 | Common base of generating set |
| CN203067086U (en) * | 2012-12-24 | 2013-07-17 | 中国船舶重工集团公司第七一一研究所 | Standby generator set for port and pier transient load low-noise energy storage |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202055915U (en) * | 2010-07-23 | 2011-11-30 | 广州威能机电有限公司 | Environmentally-friendly ultra-quiet type diesel generator set |
| CN202327538U (en) * | 2011-11-30 | 2012-07-11 | 重庆潍柴发动机厂 | Common base of generating set |
| CN203067086U (en) * | 2012-12-24 | 2013-07-17 | 中国船舶重工集团公司第七一一研究所 | Standby generator set for port and pier transient load low-noise energy storage |
Non-Patent Citations (1)
| Title |
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| 某机车用柴油发电机组的隔振分析;鲁琳;《中国优秀硕士学位论文全文数据库》;20130915;全文 * |
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